Specification
- Single width FMC mezzanine
(ANSI/VITA.57,
Chapter 3.2)
IMPORTANT: The FieldTR transformer is ~1 mm higher than what the standard permits. Due to that, the carrier board should have a cut out under the FMC board (see e.g. the SPEC board).
IMPORTANT: The FMC standard says a mezzanine should provide an EEPROM, but due to radiation tolerance requirements it is not desirable. If there is a justified request, the EEPROM can be emulated using the nanoFIP FPGA.
* nanoFIP interface:
- standard DB9 male connector with 4-40 UNC threaded bolt for cable
locking
- 2x1 2.54 mm pin header on a side
* FMC interface:
- FMC low pin count connector (ANSI/VITA.57, Table 3).
- Requires 12V & 3.3V as in the VITA.57 standard.
- LVTTL I/O levels.
- Unused pins in the nanoFIP FPGA will be routed to the FMC connector.
- Variable data transfer over an integrated memory accessiblewith an 8-bit-data, 10-bit-addr WISHBONE interconnection.
- Possibility of stand-alone mode with 16 input and 16 output lines without the need to transfer data to or from memory.
- Separate data valid outputs for each variable (consumed and
produced).
- JTAG to reprogram a companion FPGA (on the carrier board) using the
nanoFIP link.
TODO pinout*
* Reset (more):
- External pin available on the FMC connector (might be disconnected by removing a 0 ohm resistor)
- Addressed reset by broadcast consumed variable validated by station address as data
- Power-on reset
- Reset output available to external logic via the FMC connector
* Estimated power consumption (based on nanoFIP test report):
- 90 mA / 3.3V (FPGA 3.3V and 1.5V LDO; LEDs)
- 75 mA / 12V (5V LDO at 70% efficiency for FielDrive and FieldTR which
consume ~120 mA / 5V in total)
- 2 LEDs indicating TX/RX link activity. (TODO configurable?)
- JTAG connector (standard 2x5 2.54 mm or 1.27 mm pin header) Actel FlashPro 4 pinout) for the nanoFIP FPGA and a jumper to disable reprogramming.
- Radiation tolerance up to 200 Gy.
- 8 dip switches on a side/top to configure address (accessible without removing the mezzanine).
- Constructor and model IDs set by solder bridges/resistors.