Clock Card Rev B to Rev C changes
From MCEWiki
- hard-wired pcb revision
- In Rev. C, 4 pins are introduced to provide the ability of reading back the pcb revision by software. These 4 bits are reported in the upper 16 bits of card_type. e.g., in a *.run file:
RB cc card_type 00000771
- 771 translates to 0x303 or cc card_type 3 pcb_rev 3
- card_type reads 00000003 for cards prior to Rev. C.
- SEU detection
- The CRC_ERROR pin of the FPGA can be used to reconfigure the FPGA in case of an SEU hit on the FPGA configuration bits. This is not available on Rev. B. The option needs to yet be supported in firmware and software.
- The reset switch is now accessible on the front panel
- new temperature sensor chip
- U28 or MAX1618 became obsolete and Rev. C uses LM95235EIMM instead.
