sayma: add comments about CPLL line rate on KU GTH

2020-12-15 18:06:02 +08:00 · 2020-12-15 18:06:02 +08:00 · e79fedd67a
parent 69cfa8e2e5
commit e79fedd67a
1 changed files with 2 additions and 0 deletions
--- a/artiq/gateware/targets/sayma_amc.py
+++ b/artiq/gateware/targets/sayma_amc.py
@ -169,6 +169,8 @@ class SatelliteBase(MiniSoC):
 # JESD204 DAC Channel Group
 class JDCG(Module, AutoCSR):
    def __init__(self, platform, sys_crg, jesd_crg, dac):
+        # Kintex Ultrascale GTH, speed grade -1C:
+        # CPLL linerate (D=1): 4.0 - 8.5 Gb/s
        self.submodules.jesd = jesd204_tools.UltrascaleTX(
            platform, sys_crg, jesd_crg, dac)