Timing Module Connector and Pin Assignments

The table below describes the timing connector pin assignments, followed by a description of each pin group in the table Timing Module Connector Pin Groups .

Pin	Name	Function	Pin	Name	Function
1	GND	Ground	2	EXT0	External event line # 0 (LSB)
3	EXT1	External event line # 1	4	EXT2	External event line # 2
5	EXT3	External event line # 3	6	GND	Ground
7	EXT4	External event line # 4	8	EXT5	External event line # 5
9	EXT6	External event line # 6	10	EXT7	External event line # 7
11	GND	Ground	12	EXT8	External event line # 8
13	EXT9	External event line # 9	14	EXT10	External event line # 10
15	EXT11	External event line # 11	16	GND	Ground
17	EXT12	External event line # 12	18	EXT13	External event line # 13
19	EXT14	External event line # 14	20	EXT15	External event line # 15(MSB)
21	GND	Ground	22		Spare
23		Spare	24	GND	Ground
25	XPAUSE	External override pause command	26	GND	Ground
27	XTRIG	External override run command	28	GND	Ground
29	ORUN	Run Indication	30	GND	Ground
31	XCLK	External Clock input	32	GND	Ground
33	XSTB	External Strobe input	34	GND	Ground
35	XCEN	External Clock Enable	36	GND	Ground
37		Spare	38	GND	Ground
39	OCLK	Clock Output	40	GND	Ground
41	OSTB	Strobe Output	42	GND	Ground
43		Spare	44	GND	Ground
45	BCLK	Spare B Clock	46	GND	Ground
47		Spare	48		Spare
49		Vcc (+5v)	50		Vcc (+5V)

Timing Module Connector Pins

Name	I/O	Function
EXT 1-16	Input	External event lines
XPAUSE	Input	When set to low, the board is forced to the PAUSE state. Only if the board is armed. If both (XTRIG and XPAUSE) are low and the board was armed, the board will toggle between the RUN state and the PAUSE state every clock cycle.
XTRIG	Input	When set to low, the board is forced to the RUN state. Only if the board is armed. If both (XTRIG and XPAUSE) are low and the board was armed, the board will toggle between the RUN state and the PAUSE state every clock cycle.
ORUN	Output	When low, the board is in the RUN state.
XCLK	Input	External clock
XSTB	Input	External strobe
XCEN	Input	External clock enable. When low, the board is forced to use the external clock. The external clock must be present before this line is set to low. If this line is set to low before arming the board, it may cause improper operation of the board.
OCLK	Output	Clock output
OSTB	output	Strobe output
BCLK	output	B clock output

Timing Module Connector Pin Groups