Schematics review
21 June 2017
Reviewed
document
Additional
report
(Slawosz Uznanski, TE-EPC-CCE)
See Documenting
reviews for
tags explanation
present:
- Denia Bouhired-Ferrag (BE-CO-HT)
- Dimitris Lampridis (BE-CO-HT)
- Erik van der Bij (BE-CO-HT)
- Evangelia Gousiou (BE-CO-HT)
- Grzegorz Daniluk (BE-CO-HT)
- Kamil Kucel (EN-ACE-SU)
- Maciej Suminski (designer, BE-CO-HT)
- Nikolaos Trikoupis (TE-CRG-CI)
- Piotr Zdunek (TE-MPE-EP)
- Slawosz Uznanski (TE-EPC-CCE)
- Spyridon Georgakakis (TE-MPE-EP)
- Tomasz Wlostowski (BE-CO-HT)
General
- Wherever possible place inputs coming from the left side, outputs going to the right side.
- Add wires for pins that have only a net label (so it is clear that they are connected).
* Discuss with the users possibility of disabling the standalone interface, it will free up a lot of FMC pins.
* There is an idea to develop nanoFIP gateware with serial (SPI?) interface instead of Wishbone/standalone.
Main page
(none)
FPGA
- Check Microsemi note about RC termination for the clock signal.
JTAG, power, LEDs
+ Add a jumper shorting FPGA_TDI and FPGA_TDO to bypass the FPGA TAP in the FMC JTAG daisy-chain.
+ Use one-shot trigger circuit with BC817 and a single NOT gate instead of NMOS/PMOS.
Use the same type of NOT gate to invert one of the signals. If it is confirmed that
there will be a new gateware revision, then drive the LEDs directly from the nanoFIP FPGA.
+ Add a diode for the power-on-reset circuit (see FGClite). Add a note about the RC constant.
- Add a note explaining pull-downs on the JTAG connector.
- Check Microsemi note about capacitors for VJTAG and VPUMP.
- Check whether it is necessary to connect Vpp to the JTAG connector (pin 7).
Power supply
! Missing connection on pin 8 of IC2.
* Check if LHC4913 comes in a different package, consider using it.
Settings
- Move the substation address pull-ups references so they do not touch the resistor boxes.
Fieldbus interface
! *GND on the DB9 connector is not connected.*
+ Add resistors to enable FielDrive test modes (not mounted by default).
FMC connector (LPC)
- Unique ID reading works correctly in DS18B20U under radiation. Temperature readings are
incorrect at times, but this can be fixed in software. Consider mounting the IC by default.
Maciej Sumiński, 22 June 2017