578 lines
13 KiB
Plaintext
578 lines
13 KiB
Plaintext
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TITLE
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Fan Controller (axi_fan_control)
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AXI_FAN_CONTROL
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ENDTITLE
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############################################################################################
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############################################################################################
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REG
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0x00
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VERSION
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Version of the peripheral. Follows semantic versioning. Current version 1.00.a.
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ENDREG
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FIELD
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[31:16] 0x0001
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VERSION_MAJOR
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RO
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ENDFIELD
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FIELD
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[15:8] 0x00
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VERSION_MINOR
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RO
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ENDFIELD
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FIELD
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[7:0] 0x61
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VERSION_PATCH
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RO
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ENDFIELD
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############################################################################################
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############################################################################################
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REG
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0x01
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PERIPHERAL_ID
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ENDREG
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FIELD
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[31:0] ''ID''
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PERIPHERAL_ID
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RO
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Value of the ID configuration parameter.
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ENDFIELD
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############################################################################################
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############################################################################################
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REG
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0x02
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SCRATCH
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ENDREG
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FIELD
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[31:0] 0x00000000
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SCRATCH
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RW
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Scratch register useful for debug.
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ENDFIELD
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############################################################################################
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############################################################################################
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REG
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0x03
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IDENTIFICATION
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ENDREG
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FIELD
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[31:0] 0x46414E43
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IDENTIFICATION
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RO
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Peripheral identification ('F', 'A', 'N', 'C').
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ENDFIELD
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############################################################################################
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############################################################################################
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REG
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0x10
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IRQ_MASK
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ENDREG
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FIELD
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[3] 0x1
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NEW_TACHO_MEASUREMENT
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RW
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Masks the TACHO_MEASUREMENT_DONE IRQ.
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ENDFIELD
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FIELD
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[2] 0x1
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TEMP_INCREASE
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RW
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Masks the TEMP_INCREASE IRQ.
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ENDFIELD
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FIELD
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[1] 0x1
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TACHO_ERR
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RW
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Masks the TACHO_ERR IRQ.
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ENDFIELD
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FIELD
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[0] 0x1
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PWM_CHANGED
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RW
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Masks the PWM_CHANGED IRQ.
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ENDFIELD
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############################################################################################
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############################################################################################
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REG
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0x11
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IRQ_PENDING
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ENDREG
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FIELD
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[3] 0x0
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NEW_TACHO_MEASUREMENT
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RW1C
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This bit will be asserted when the hardware has written a new value to the
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TACHO_MEASUREMENT register if the NEW_TACHO_MEASUREMENT bit in the IRQ_MASK
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register is not set.
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ENDFIELD
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FIELD
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[2] 0x0
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TEMP_INCREASE
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RW1C
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This bit will be asserted whenever the HW decides to increase the PWM
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duty-cycle, indicating a rise in temperature, and if the TEMP_INCREASE bit in
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the IRQ_MASK register is not set.
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ENDFIELD
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FIELD
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[1] 0x0
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TACHO_ERR
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RW1C
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This bit will be asserted when a fault related to the tacho signal is detected.
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This can either mean that the tacho has not toggled in 5 seconds or that the
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period of the tacho signal is no longer whithin the defined valid interval.
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Also, the TACHO_ERR bit in the IRQ_MASK register must not be set.
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ENDFIELD
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FIELD
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[0] 0x0
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PWM_CHANGED
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RW1C
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This bit will be asserted when a 5 second delay expires after the PWM width was
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changed. The delay is used to allow the fan rotation speed to stabilize. Also,
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the PWM_CHANGED bit in the IRQ_MASK register must not be set.
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ENDFIELD
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############################################################################################
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############################################################################################
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REG
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0x12
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IRQ_SOURCE
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ENDREG
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FIELD
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[3] 0x0
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NEW_TACHO_MEASUREMENT
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RO
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This bit will be asserted when the hardware has written a new value to the
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TACHO_MEASUREMENT register.
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ENDFIELD
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FIELD
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[2] 0x0
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TEMP_INCREASE
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RO
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This bit will be asserted whenever the hardware decides to increase the PWM
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duty-cycle indicating a rise in temperature.
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ENDFIELD
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FIELD
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[1] 0x0
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TACHO_ERR
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RO
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This bit will be asserted when a fault related to the tacho signal is detected.
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This can either mean that the tacho has not toggled in 5 seconds or that the
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period of the tacho signal is no longer whithin the defined valid interval.
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ENDFIELD
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FIELD
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[0] 0x0
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PWM_CHANGED
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RO
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This bit will be asserted when a 5 second delay expires after the PWM width was
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changed. The delay is used to allow the fan rotation speed to stabilize.
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ENDFIELD
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############################################################################################
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############################################################################################
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REG
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0x20
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REG_RSTN
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ENDREG
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FIELD
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[0] 0x0
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RSTN
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RW
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Reset, default is IN-RESET (0x0), software must write 0x1 to bring up the core.
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ENDFIELD
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############################################################################################
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############################################################################################
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REG
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0x21
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PWM_WIDTH
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ENDREG
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FIELD
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[31:0] ''PWM_PERIOD''
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PWM_WIDTH
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RW
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This register contains the width of the PWM output signal. By default its
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value is established by the hardware after reading the temperature. By writing
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to this register the software can change the value however this is only possible
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if the requested value is greater than the value selected by the hardware and
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not exceeding the PWM period.
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ENDFIELD
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############################################################################################
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############################################################################################
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REG
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0x22
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TACHO_PERIOD
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ENDREG
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FIELD
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[31:0] 0x00000000
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TACHO_PERIOD
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RW
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After using the PWM_WIDTH register to request a different duty-cycle, the
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software can use this register to define the target period of the tacho signal.
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This is used together with the TACHO_TOLERANCE register to define an interval
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for the tacho signal. This register must be written before the TACHO_TOLERANCE
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register. The hardware will then use this interval to monitor the tacho signal
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coming from the fan.
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ENDFIELD
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############################################################################################
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############################################################################################
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REG
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0x23
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TACHO_TOLERANCE
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ENDREG
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FIELD
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[31:0] 0x00000000
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TACHO_TOLERANCE
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RW
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This register is used together with the TACHO_PERIOD register to define an
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interval for the fan's tacho signal. Writing to this register enables the
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hardware to start monitoring the tacho signal and so it must be written after
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the TACHO_PERIOD register.
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ENDFIELD
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############################################################################################
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############################################################################################
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REG
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0x24
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TEMP_DATA_SOURCE
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ENDREG
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FIELD
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[31:0] ''INTERNAL_SYSMONE''
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TEMP_DATA_SOURCE
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RO
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This register copies the value from the INTERNAL_SYSMONE register and is used to inform
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the software what the source of the temperature information is.
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ENDFIELD
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############################################################################################
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############################################################################################
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REG
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0x30
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PWM_PERIOD
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ENDREG
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FIELD
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[31:0] 0x4E20
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PWM_PERIOD
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RO
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This register contains the period for the PWM output signal. Derived from the
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PWM_FREQUENCY_HZ parameter.
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ENDFIELD
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############################################################################################
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############################################################################################
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REG
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0x31
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TACHO_MEASUREMENT
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ENDREG
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FIELD
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[31:0] 0x00000000
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TACHO_MEASUREMENT
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RO
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This register contains the measurement results of the tacho signal period
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performed by the hardware.
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ENDFIELD
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############################################################################################
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############################################################################################
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REG
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0x32
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TEMPERATURE
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ENDREG
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FIELD
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[31:0] 0x00000000
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TEMPERATURE
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RO
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This register contains the latest temperature reading from the SYSMONE
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primitive.
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ENDFIELD
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############################################################################################
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############################################################################################
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REG
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0x40
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TEMP_00_H
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ENDREG
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FIELD
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[31:0] ''TEMP_00_H''
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TEMP_00_H
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RW
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Temperature threshold below which PWM should be 0%
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ENDFIELD
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############################################################################################
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############################################################################################
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REG
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0x41
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TEMP_25_L
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ENDREG
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FIELD
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[31:0] ''TEMP_25_L''
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TEMP_25_L
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RW
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Temperature threshold above which PWM should be 25%
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ENDFIELD
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############################################################################################
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############################################################################################
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REG
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0x42
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TEMP_25_H
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ENDREG
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FIELD
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[31:0] ''TEMP_25_H''
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TEMP_25_H
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RW
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Temperature threshold below which PWM should be 25%
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ENDFIELD
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############################################################################################
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############################################################################################
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REG
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0x43
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TEMP_50_L
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ENDREG
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FIELD
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[31:0] ''TEMP_50_L''
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TEMP_50_L
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RW
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Temperature threshold above which PWM should be 50%
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ENDFIELD
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############################################################################################
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############################################################################################
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REG
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0x44
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TEMP_50_H
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ENDREG
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FIELD
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[31:0] ''TEMP_50_H''
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TEMP_50_H
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RW
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Temperature threshold below which PWM should be 50%
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ENDFIELD
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############################################################################################
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############################################################################################
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REG
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0x45
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TEMP_75_L
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ENDREG
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FIELD
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[31:0] ''TEMP_75_L''
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TEMP_75_L
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RW
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Temperature threshold above which PWM should be 75%
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ENDFIELD
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############################################################################################
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############################################################################################
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REG
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0x46
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TEMP_75_H
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ENDREG
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FIELD
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[31:0] ''TEMP_75_H''
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TEMP_75_H
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RW
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Temperature threshold below which PWM should be 75%
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ENDFIELD
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############################################################################################
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############################################################################################
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REG
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0x47
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TEMP_100_L
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ENDREG
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FIELD
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[31:0] ''TEMP_100_L''
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TEMP_100_L
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RW
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Temperature threshold above which PWM should be 100%
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ENDFIELD
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############################################################################################
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############################################################################################
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REG
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0x50
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TACHO_25
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ENDREG
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FIELD
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[31:0] ''TACHO_T25''
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TACHO_25
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RW
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Nominal tacho period at 25% PWM
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ENDFIELD
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############################################################################################
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############################################################################################
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REG
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0x51
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TACHO_50
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ENDREG
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FIELD
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[31:0] ''TACHO_T50''
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TACHO_50
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RW
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Nominal tacho period at 50% PWM
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ENDFIELD
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############################################################################################
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############################################################################################
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REG
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0x52
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TACHO_75
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ENDREG
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FIELD
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[31:0] ''TACHO_T75''
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TACHO_75
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RW
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Nominal tacho period at 75% PWM
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ENDFIELD
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############################################################################################
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############################################################################################
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REG
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0x53
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TACHO_100
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ENDREG
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FIELD
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[31:0] ''TACHO_T100''
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TACHO_100
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RW
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Nominal tacho period at 100% PWM
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ENDFIELD
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############################################################################################
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############################################################################################
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REG
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0x54
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TACHO_25_TOL
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ENDREG
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FIELD
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[31:0] ''TACHO_T25'' \\ ''*TACHO_TOL_PERCENT'' \\ ''/100''
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TACHO_25_TOL
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RW
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Tolerance for the 25% PWM tacho period
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ENDFIELD
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############################################################################################
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############################################################################################
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REG
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0x55
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TACHO_50_TOL
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ENDREG
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FIELD
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[31:0] ''TACHO_T50'' \\ ''*TACHO_TOL_PERCENT'' \\ ''/100''
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TACHO_50_TOL
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RW
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||
|
Tolerance for the 50% PWM tacho period
|
||
|
ENDFIELD
|
||
|
|
||
|
############################################################################################
|
||
|
############################################################################################
|
||
|
|
||
|
REG
|
||
|
0x56
|
||
|
TACHO_75_TOL
|
||
|
ENDREG
|
||
|
|
||
|
FIELD
|
||
|
[31:0] ''TACHO_T75'' \\ ''*TACHO_TOL_PERCENT'' \\ ''/100''
|
||
|
TACHO_75_TOL
|
||
|
RW
|
||
|
Tolerance for the 75% PWM tacho period
|
||
|
ENDFIELD
|
||
|
|
||
|
############################################################################################
|
||
|
############################################################################################
|
||
|
|
||
|
REG
|
||
|
0x57
|
||
|
TACHO_100_TOL
|
||
|
ENDREG
|
||
|
|
||
|
FIELD
|
||
|
[31:0] ''TACHO_T100'' \\ ''*TACHO_TOL_PERCENT'' \\ ''/100''
|
||
|
TACHO_100_TOL
|
||
|
RW
|
||
|
Tolerance for the 100% PWM tacho period
|
||
|
ENDFIELD
|
||
|
|
||
|
############################################################################################
|
||
|
############################################################################################
|