Comments (4)
The marked up schematic page 1, to reflect the assembly:
from time-appliance-project.
Q1: Your observation is in general correct. The schematics you are reffering does not match with the FPGA readme. The schematics is a beta (should we replace this once? @ahmadexp) and it was wrong because with this you loose the backwards compatibility. Do you have produced your own PCB?
On the picture you can see that it was patched on the hardware.
So in short the FPGA/Readme.pdf is correct.
2. In the u-center I am using 9th generation is supported (Version 20.06.01)
Q2: I don't understand what you exactly mean by this?
Q3: I guess so but as mentioned I don't see there any problem with U-Center
The FPGA comes up with a base configuration, however without PCIe or UART you can't do any modification or reading out any time (I guess the schematics you are reffering to doesn't have an FPGA UART). I would recommand to continue with the PCIe and the driver.
from time-appliance-project.
from time-appliance-project.
Q2: Theoretically you should see a PPS even without a GNSS module. By default on ANT4 the PPS of the Local Clock from the PPS master is selected.
Additionally you can maybe check some status on the LEDs. On LED3 you should get also a PPS. They have following mapping (Readme.pdf is updated with this information):
LED1: Alive LED of the FPGA internal Clock (50MHz) --> This must be blinking!
LED2: Alive LED of the PCIe clocking part (62.5MHz)
LED3: PPS of the FPGA (Time of the Local Clock via PPS Master)
LED4: PPS of the MAC (differential inputs from the MAC via diff-buffer)
from time-appliance-project.
Related Issues (20)
- Deprecated function use in 'ptp_ocp' driver HOT 5
- ptp_ocp on RPi CM4 doesn't expose NMEA TTY and GNSS TTY HOT 5
- TimeCard starts with a random frequency offset on 10 MHz output HOT 1
- seperate utc offset files HOT 2
- LED driver enable pulled down HOT 2
- Prototype V7 schematic title block errors HOT 1
- locate SMB connector on RCB HOT 1
- Fail in creating open source FPGA binaries from scratch HOT 5
- Open source FPGA build fails HOT 3
- LOF (ver 0.1) mechanical drawing is incomplete HOT 1
- SA45 osc daughtercard does not bring out LOCK signal HOT 1
- connector holes in Timecard I/O bracket aren't fully located HOT 1
- Production Timecard: bad termination on FPGA JTAG with USB HOT 2
- SMA TVS not connected to +3.3V HOT 1
- Production Timecard: mismatch between board and FPGA PCIe lane counts HOT 1
- experimental timecard v9 resistors R2 and R3 have the wrong values HOT 1
- Loading driver cause system crash on version of Beta-V1 HOT 12
- Time Card PCB queries from PCBway regarding vias in pad. HOT 2
- wrong UTC Offset to TAI during startup with NEO-M9N HOT 17
- Request to make TimeCardOS.bit available HOT 1
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from time-appliance-project.