Documentation for TTC/aTTS Jumper Board

This small PCB holds two RJ-45 connectors, and has 100-ohm differential microstrip connections to the logic board via a CMC-64 connector. The pinout and signal use is given in the table below.

jpr3a.zip

PCB Gerber Files (3/7/04)

jumper_pcb.gif
Jumper PCB	Location on DCC Assembly

Notes:

• RJ-45 connector "A" is towards the top of the front panel, and receives signals from the TTC Fanout (Princeton... documentation HERE)
• RJ-45 connector "B" sends signals to the TTS (trigger throttling system).
  Documentation is CMS Note 2002-033 (or local copy). See esp. page 14.
• Encoded TTC pair should be routed directly to TTCRx mezzanine inputs
• 80MHz clock, 40MHz clock and BC0 signals are 3.3VPECL pairs with source pull-downs. They should be terminated 100 ohm differential and routed to the main DCC Xilinx.
• The T0-T3 pairs are LVDS outputs and should come from the main DCC Xilinx.

CMC Pin	RJ-45 Pin	Description	CMC Pin	RJ-45 Pin	Description
1	A-8	80MHz clock in -	2	-	-
3	A-7	80MHz clock in +	4	-	-
5	-	GND	6	-	GND
7	A-6	40MHz clock in -	8	-	-
9	A-3	40MHz clock in +	10	-	-
11	-	GND	12	-	GND
13	A-4	BC0 in -	14	-	-
15	A-5	BC0 in +	16	-	-
17	-	GND	18	-	GND
19	A-2	Encoded TTC in -	20	-	-
21	A-1	Encoded TTC in +	22	-	-
23	-	GND	24	-	GND
25	-	-	26	-	-
27	-	-	28	-	-
29	-	-	30	-	-
31	-	-	32	-	-
33	-	-	34	-	-
35	-	-	36	-	-
37	-	GND	38	-	-
39	B-8	T1 (OUT_OF_SYNC) out +	40	-	-
41	B-7	T1 (OUT_OF_SYNC) out -	42	-	-
43	-	GND	44	-	GND
45	B-6	T3 (READY) out +	46	-	-
47	B-3	T3 (READY) out -	48	-	-
49	-	GND	50	-	GND
51	B-4	T0 (OVERFLOW) out +	52	-	-
53	B-5	T0 (OVERFLOW) out -	54	-	-
55	-	GND	56	-	GND
57	B-2	T2 (BUSY) out +	58	-	-
59	B-1	T2 (BUSY) out -	60	-	-
61	-	GND	62	-	GND
63	-	-	64	-	-