Carrier Board External Interfaces

+12VDC Power (Required)

• When the daugther board is plugged in, the total power draw is about 10W (+12VDC @ 0.8A)
  
  • Carrier Board is ~5W
  • Digital Daughter board is ~5W
• To prevent the boards from overheating, we require cool air to be blown from a fan
  • Using a thermal electric cool on the ASIC would be an acceptable thermal management solution as well

PGP/ETH (Required)

• This SFP interface is the PGP or ETH (depending on which firmware is loaded)
• When ETH firmware is load:
  
  • Ethernet PHY is 1000BASE-SX

SLAC EVR (Optional)

• Used for interfacing to the SLAC's linac timing system

TTL Input (Optional)

• Used for external triggering
• +5V TTL logic levels
• BNC Connector

TTL Output (Optional)

• Currently usued in the firmware
• +5V TTL logic levels
• BNC Connector

External Differential 40 MHz Reference (Optional)

• Used for external 40 MHz timing reference

• Differential LEMO