Add CMOS support for the interface for the following symbol modes on Xilinx devices:
A B C D E F G H
CSSI__1-lane 1 16/8 80(SDR)/160(DDR) 80 - SDR/DDR SDR/DDR->4/2(C=16), 2/1(C=8)
Columns description:
A - SSI Modes
B - Data Lanes Per Channel
C - Serialization factor Per data lane
D - Max data lane rate(MHz)
E - Max Clock rate (MHz)
F - Max Sample Rate for I/Q (MHz)
G - Data Type
H - DDS Rate
CSSI - CMOS Source Synchronous Interface
Adds a magic identification value of 0x54444443 at word address 0x3.
It is derived from the ASCII String "TDDC" interpreted as a big-endian
32-bit unsigned integer.
Signed-off-by: David Winter <david.winter@analog.com>
If R1 mode is first syncronized to the dac clock domain will prevent its
usage if the dac clock is missing. In such case the synchronization will not
propagate.
Create a common 'run_tb.sh' script to be called by every testbench.
Unify file and testbenches names.
Fix util_pack/cpack_tb.
Add parameters '-batch' and '-gui' for modelsim and xsim simulators (default is gui)
Add ascript for that generates output in xml format (used by CI tools).
Build a large mux from smaller ones defined by the REQ_MUX_SZ parameter
Use EN_REG to add a register at the output of the small muxes to help
timing closure.
This commit adds two fields:
1. source channel selection - Sets the channel number the for the source data.
2. DMA enable mask - When this bit is set do not drive the enable line
towards the DMA interface.
Quartus Standard 19.1 throw a critical warning for registers that have
different reset and initial power-up level.
Do not initialize those registers so we can get rid of the warning.
Converting from RGB to YCbCr takes one less stage than converting
from YCbCr to RGB color space.
Moving extra delay stage(5), of the sync signals to a particular
YCbCr to RGB color space conversion case.
If dac_valid is not a constant '1' it gets synchronized with the
dac_data_sync signal. This causes that dac_valid never asserts while
dac_data_sync is high, this way skipping the phase initialization.
De-assert dac_rst together with an updated control set.
This allows writing the control registers before releasing the reset.
This is important at start-up when stable set of controls is required.
De-assert adc_rst together with an updated control set.
This allows writing the control registers before releasing the reset.
This is important at start-up when stable set of controls is required.
Allow monitoring of non-PN patterns which have zeros in it.
e.g. nible-ramp, full range ramp.
Singular zeros got ignored if not out of sync, while OOS_THRESHOLD
consecutive zeros or non-matching data asserts the out of sync line.
For projects where the clock ratio between the sampling clock and core clock
is higher than 2, the ad_dds generates a number of samples equal with
the clock ratio. There is a phase offset between the samples, proportional
with the requested DDS frequency.
In scenarios where the DDS out frequency is closer to the upper
limit(Nyquist) and/or the clock ratio is also greater than 2 and the
dac_data_sync reminds low for an extended period of time, the DAC will
receive at each core clock period, a number of samples equal with the
clock ratio and with an amplitude influenced by the DDS out frequency.
In most cases similar with a sawtooth signal.
With this commit we ensures that samples received by the DAC are 0 for
the period where dac_data_sync signal is high. Only when the signal
transitions to low, the phase accumulator is initialized and the phase
information is passed to the phase to amplitude converter.
Another issue can appear when the sync signal is too short; less then
CLK_RATIO * clock cycles. Because the phase accumulator will not
synchronize at all stages, the final result will be a random combination of
sine-waves. Added a minimum sync pulse after the dac_data_sync is set
low.
The external synchronization signal should be synchronous with the
dac clock. Synchronization will be done on the rising edge of the signal.
The control bit is self clearing. Status bit shows that the synchronization
is armed but the synchronization signal has not yet been received
Added EXT_SYNC parameter to be able to keep the dac_sync original
behavior
stefan.raus
Laszlo Nagy
Istvan Csomortani
David Winter
alin724
Adrian Costina
sergiu arpadi
AndreiGrozav