When phase alignment is active, the PFD frequency value should be used
as outclk1 actual frequency.
The configuration interface of the fPLL does not support fractional values.
If the reference clock is fractional, the tool will throw an error that requirement
above is not respected.
Round up the reference clock for the SERDES and the lane rate in order to
overcome this issue, until it's not fixed by Intel.
When phase alignment is active, the PFD frequency value should be used
as outclk1 actual frequency.
The configuration interface of the fPLL does not support fractional values.
If the reference clock is fractional, the tool will throw an error that requirement
above is not respected.
Round up the reference clock for the SERDES and the lane rate in order to
overcome this issue, until it's not fixed by Intel.
-change the video memory interfacing from f2h_axi_slave to
f2h_sdram0
- add f2h_sdram1 port as the default interface for converter DMA
- set as default the full HD resolution at 60 FPS (pixel clock 148.5MHz)
- use a second 200MHz(198MHz) clock from the pixel_clk_pll, as DMA source
to destination clock.
Also modified the FIFO ports to have the same widths so that in a
future commit the bypass would be available for cases when the
sampling rate won't be the maximum rate or the number of channels
active will be less than maximum number of channels
Switch RX path reset to be controlled by the TPL and use
RX SYSREF as external synchronization for the ADC TPL
Use TX SYSREF for synchornizing the TX DDS
The device clocks are AC coupled LVDS lines without external termination.
For proper operation internal differential termination must be enabled,
the DQS_BIAS will DC bias the AC coupled signal to VCCO/2 (1.8/2) 0.9V
Added reference design for the ad9656 evaluation board coupled with the
zcu102 carrier board. The JESD204 communication link that transfers data
from the 4 ADCs to the FPGA has the following paramenters : L=4, M=4, S=1,
F=2, HD=0, N=16, NP=16. The JESD204 line rate is configured to be 2.5GHz.
Signed-off-by: Dan Hotoleanu <dan.hotoleanu@analog.com>
The coraz7s has an Arduino/chipKIT Shield connector with 6 Single-ended
and 8 Differential Analog inputs tied to Xilinx's XADC.
The CN0540 uses the A0-5 pins as single-ended ADC channels to monitor
the differential input, ADC driver, and buffer voltages.
Signed-off-by: Sergiu Cuciurean <sergiu.cuciurean@analog.com>
Note, the current SCLK to spi_clk ratio is four. That means, the input
delay in the MISO line is 25% of the SCLK period.
If the SCLK to spi_clk ratio is changing, this constraint must be
updated.
Generate a higher frequency of spi_clk using an axi_clkgen. (MMCM)
CAUTION: ad7768-1 is still violating the standard SPI timing,
reducing the timing window significantly for the last bit (or last high
bit).
Ignore the following critical warning on DMAC instance:
Critical Warning (15003): "mixed_port_feed_through_mode" parameter of RAM atom
system_bd:i_system_bd|axi_dmac:axi_dmac_0|axi_dmac_transfer:i_transfer| \
dmac_request_arb:i_request_arb|dmac_dest_mm_axi:i_dest_dma_mm| \
altsyncram:bl_mem_rtl_0|altsyncram_0tp1:auto_generated|ram_block1a1
cannot have value "old" when different read and write clocks are used.
Due to the interface differences between HPS's AXI4 and DMA's AXI4, the
tool will try to automaticaly add some bridges between the two
interface. Unfortunatly it does generate timing issues at the f2sdram0
interface of the HPS instance. By explicitly instantiating an AXI
bridge, these timing issues disappears.
The reconfiguration interface for the Stratix10 XCVR has a different
address width. Prepare the register map layout of the project to support
this new architecture.
If we have a lot of peripherals connected to the CPU's memory interface,
the generated interconnect can grow to much decreasing the timing
margin.
One solution is to group the peripherals by its interface types and
functions and use bridges to connect them to the memory interface.
This commit adds the possibility to insert an Avalon Memory Mapped
bridge when we create the connection between the peripheral and CPU.
Should be used just with Avalaon Memory Mapped interfaces.
The ADRV9002 uses in the digital interface 1.8V, however the Zed VADJ is
selectable by a jumper can go up to 3.3V . Voltage levels higher than 1.8V
are detected by the EVAL-ADRV9002 board, asserting the VADJ_ERR pin.
If VADJ error is set high keep all drivers in high-z state and signalize
it to the software layer through a gpio line.
All input and output delays should be referenced to a virtual clock.
If the input and output delays reference base clocks or PLL clocks rather than
virtual clocks, the intra- and inter-clock transfer clock uncertainties,
determined by derive_clock_uncertainty, are incorrectly applied to the I/O ports.
See mnl_timequest_cookbook.pdf for more info.
By defualt the supported tool chain is Quartus PRO. If you want to
build the project with Quartus Standard, you need to define an environment
variable called QUARTUS_PRO_ISUSED with the value 0. (e.g. export
QUARTUS_PRO_ISUSED=0 )
Note: Not all projects going to build on Quartus Standard, you should
fix the errors if there is any.
There is a major compatibility issue between 2019.1 and 2019.2.
The file system_top.hdf got a different file extention. This will
cause a compilation failer in the end of the build. To save time
and fail earlier, upgrade the version mismatch message to ERROR.
If user still wants to build a branch with different tool version
the variable ADI_IGNORE_VERSION_CHECK should be set to 1.
On the Xilinx PHY the available PLL options depends on the lane rate.
Encoding is:
0 - CPLL
1 - QPLL0
2 - QPLL1
Since the selection of line rate is available from the project also the
PLL selection must be exposed.
The AFE's I2C interface should be pin-multiplexed to the FPGA. Also, add
a bidirectional IO buffer for the interface, and make sure it has weak
pull-up resistors.
Use over-writable parameters from the environment.
e.g.
make JESD_MODE=64B66B RX_RATE=24.75 TX_RATE=12.375 REF_CLK_RATE=375 RX_JESD_L=4 TX_JESD_L=4
make JESD_MODE=64B66B RX_RATE=16.22016 TX_RATE=16.22016 REF_CLK_RATE=245.76 RX_JESD_M=8 RX_JESD_L=2 TX_JESD_M=16 TX_JESD_L=4
make JESD_MODE=8B10B RX_JESD_L=4 RX_JESD_M=8 TX_JESD_L=4 TX_JESD_M=8
Istvan Csomortani
aholtzma
sergiu arpadi
AndreiGrozav
Laszlo Nagy
Adrian Costina
stefan.raus
IMoldovan
hotoleanudan
Sergiu Cuciurean
Stanca Pop
Stanca.Pop
Dragos Bogdan