Notes
Clocks: Currently clocks run from mezzanine to carrier for ADC e.g. on H4/H5 (CLK0M2C). This should be OK for the PicoZed FMC board too.
ADC ECO List
- Change R25 to 20k
- Connect
PWR_EN
toVADJ
- Swap inputs and outputs on U11
- Either remove PRSNT_M2C signal or connect JTAG TDO-TDI for bypass (jumper?)
DDS ECO List
- AGND to DGND needs a jumper!
- Fix the
PWR_EN
somehow to supply 5V? Suggest U5/U6/U3/U12 (5V input) all default to 'on' whilePWR_EN
just controls U2 and U4. - Serial interface changes:
- Assign 'SPARE' (LA04_N) as "device select". Route to one
nCS
, invert to other. Wire to mux to select MISO output.
- Assign 'SPARE' (LA04_N) as "device select". Route to one
Carrier ECO List
- Slots 2, 3, 4 for DDS need LA02 and LA04 wired while on carrier LA02 and LA03 are wired.
- Add level shifters on SPI for the Si5340 from 2.5V to 1.8V
- Level shifters on FTDI serial are reversed!
Last modified 5 years ago
Last modified on Jan 24, 2019, 10:39:13 AM