
Using the PXIE-1149.1/4E with ScanExpress
13
Connecting the TAP Signals
The PXIE-1149.1/4E contains four 20-pin TAP connectors. The signal pins are user-definable in
the ScanExpress software but it is recommended to use the default configuration. The following
tables enumerate the pinout for each of the USB-1149.1/E TAP connectors for the JTAG and
I2C/SPI configurations.
Pin
Signal Name
Signal Description
1
TRST*
Test Reset (Input to the UUT)
2
GND
3
TDI
Test Data In (Input to the UUT)
4
GND
5
TDO
Test Data Out (Output from the UUT)
6
GND
7
TMS
Test Mode Select (Input to the UUT)
8
GND
9
TCK
Test Clock (Input to the UUT)
10
GND
11
IO1
Discrete Input/Output to the UUT
12
GND
13
IO2
Discrete Input/Output to the UUT
14
GND
15
IO3
Discrete Input/Output to the UUT
16
GND
17
Reserved
Do Not Connect
18
Reserved
Do Not Connect
19
Reserved
Do Not Connect
20
Reserved
Do Not Connect
Table 3-1.
JTAG Connector Pin Assignments (Default)
Summary of Contents for CORELIS PXIE-1149.1/4E
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