J3 Timing Signals Connector

This topic describes the GX5280 Timing connector J3 timing and external event signals (used only on a Master). This interface uses a 68-pin VHD connector. The following table lists the Timing signals:

 

Pin
Name
Function
Pin
Name
Function
1
EXT0
Input External event 0
18
ORUN
Output Run Indication
2
EXT1
Input External event 1
19
GND
 
3
EXT2
Input External event 2
20
BCLK
Independent output programmable clock output
4
EXT3
Input External event 3
21
GND
 
5
EXT4
Input External event 4
22
OCLK
User Output Clock
6
EXT5
Input External event 5
23
GND
 
7
EXT6
Input External event 6
24
OStb
Strobe Output
8
EXT7
Input External event 7
25
GND
 
9
EXT8
Input External event 8
26
XTrig
External Trigger Input (Overrides Run Command)
10
EXT9
Input External event 9
27
XPause
External Pause Input (Overrides Pause Command)
11
EXT10
Input External event 10
28
XClkEn
External Clock Enable Input
12
EXT11
Input External event 11
29
XStbEn
External Strobe Enable Input
13
EXT12
Input External event 12
30
EXCLKO
Output clock, distributes EXCLK to slaves (PCB revision D or later, otherwise GND).
14
EXT13
Input External event 13
31
XClk
External Clock Input
15
EXT14
Input External event 14
32
XStb
External Strobe Input
16
EXT15
Input External event 15
33
VTH
Termination voltage output for data and control signals
17
OArm
Output Arm Indication
34
GND
 
35
GND
 
67
VTH
Termination voltage output for data and control signals
66
GND
 
68
GND
 

68-pin Connector J3 Timing UUT.

Unspecified pins are GND.