XRT74L73 Datasheet, PDF (8/488 Pages) Exar Corporation – 3 CHANNEL, ATM UNI/PPP DS3/E3 FRAMING CONTROLLER

XRT74L73
3 CHANNEL, ATM UNI/PPP DS3/E3 FRAMING CONTROLLER
REV. P1.0.1
PRELIMINARY
PIN DESCRIPTION
PIN#
NAME
Test and Diagnostic
U2
TCK
U1
TDI
V3
TDO
V1
TestMode
T4
TMS
U3
TRST
TYPE
DESCRIPTION
I
Test Clock: Boundary Scan clock input.
NOTE: This input pin should be pulled “Low” for normal operation.
I
Test Data In: Boundary Scan Test data input.
NOTE: This input pin should be pulled “Low” for normal operation.
O Test Data Output: Boundary Scan test data output.
*** Factory Test Mode Pin:
The user should tie this pin to ground.
I
Test Mode Select: Boundary Scan Test Mode Select input pin.
This input pin should be pulled “Low” for normal operation.
I
Test Mode Reset: Boundary Scan Mode Reset input pin.
NOTE: This input pin should be pulled "low" for normal operation.
9