It also allows to configure the fixed delay value so that no additional constraints are needed
The default value of 18 seems to work very well(450mbps tx / 640 mbps rx) on the motor control platform used for tests
In FDD mode the tx_valid_* signals are generated inside the axi_ad9361_tx module, in function of
the selected dac data rate. In TDD mode, these signals are gated by the tdd_enable and tdd_tx_dp_en signals.
In other words, the tx_valid_* signals will be valid just when tdd_enable and tdd_tx_dp_en is active.
This core has been superseded by the SPI Engine framework in combination
with the axi_generic_adc core.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
The util_sigma_delta_spi peripheral can be used to seperate the interleaved
SPI bus and DRDY signals for a ADC from the Analog Devices SigmaDelta
family.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
SPI Engine is a highly flexible and powerful SPI controller framework. It
consist out of multiple sub-modules which communicate over well defined
interfaces. This allows a high degree of flexibility and re-usability while
at the same time staying highly customizable and easily extensible.
Currently included are four components:
* SPI Engine execution module: The excution module is responsible for
handling the low-level physical interface SPI logic.
* SPI Engine AXI interface module: The AXI interface module allows
memory mapped acccess to a SPI bus control stream and can be used to
implement a software driver that controls the SPI bus.
* SPI Engine offload module: The offload module allows to store a
predefined SPI Engine command and data stream which will be send out
when a external trigger signal is asserted.
* SPI Engine interconnect module: The interconnect module allows to
combine multiple control streams into a single stream giving multiple
control modules access to a execution module.
For more information see: http://wiki.analog.com/resources/fpga/peripherals/spi_engine
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
The axi_generic_adc core is a simple core that doesn't do much more then
implementing the AXI ADC register map and routing the enable and overflow
signals to the farbic.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
The cordic_demod module takes in phase and data on s_axis interface then
performs a cordic demodulation and outputs the resulting I and Q component
data on the m_axis interface.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Allow to specify the direction of the reset signal for a interface, this is
useful if the core itself generates the reset signal.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Re-generate the Makefiles after a small update to the generation script:
- Entries are sorted alphabetically
- Empty dependency lines are skipped
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
+ Delete unnecessary registers
+ Add the module ad_addsub.v to resolve additions and subtractions inside TDD control
+ Redefine the burst logic
+ Redesign the control signal generations
+ Note: This patch fix the TDD related timing violations
This control signal can be overwritten by the up_axis_xlast/up_axis_xlast_en bits, in order to create a single stream, which is contains multiple streams.
This can be use to fill up the DACFIFO module.
Istvan Csomortani
Adrian Costina
Rejeesh Kutty
Lars-Peter Clausen