1. CCB to OH Interface M.Matveev Rice University February 22, 2016 1

2. CCB Mezzanine Design Features Distributes 7 signals from the CSC Clock and Control Board (CCB) to OH v.2b - 40MHz LHC clock (LVDS pair) - JTAG (TCK, TMS, TDI, TDO) signals (4 LVDS pairs) - Hard Reset (500 ns pulse, LVTTL) - JTAG control to OH multiplexor, CCB or GBT (LVTTL) Six HDMI Type A connectors on the front panel Two options: CCB mezzanine and a standalone board 2

3. Grounding of HDMI Connector Pins 2,5,8,11,17 can be connected to GND with a 0 Ohm resistor. By default NOT connected. Shell (cage, 4 pins) can be connected to GND with a 0 Ohm resistor. By default NOT connected. 3

4. CCB Mezzanine Design Status and Plans PCB layout design finished on February 15 th. Plan to fabricated 10 boards by early March (delivery in 6 working days). Most components in hand. Will assemble 3 boards (2 mezzanines and a standalone version) and verify functionality at Rice with the OH v.2a. Then ship one modified CCB board to TAMU and one standalone board to Yifan. Test them with the OH v.2b. If no problem, assemble all other boards in summer. 4