PM4314 QDSX
DATA SHEET
PMC-950857
ISSUE 5
QUAD T1/E1 LINE INTERFACE DEVICE
Pin Name
Type
I/O
Pin
Function
No.
26
25
24
17
16
15
14
13
D[7]
D[6]
D[5]
D[4]
D[3]
D[2]
D[1]
D[0]
Bidirectional Data Bus (D[7:0]).This bus is used
during QDSX read and write accesses.
RSTB
Input
7
Active low Reset (RSTB).This signal is set low to
asynchronously reset the QDSX. RSTB is a
Schmitt-trigger input with an integral pull-up
resistor.
TCK
TMS
Input
Input
3
4
Test Clock (TCK).This signal provides timing for
test operations that can be carried out using the
IEEE P1149.1 test access port.
Test Mode Select (TMS).This signal controls the
test operations that can be carried out using the
IEEE P1149.1 test access port. TMS is sampled
on the rising edge of TCK. TMS has an integral
pull up resistor.
TDI
Input
2
6
Test Data Input (TDI). This signal carries test data
into the QDSX via the IEEE P1149.1 test access
port. TDI is sampled on the rising edge of TCK.
TDI has an integral pull up resistor.
TDO
Tristate
Output
Test Data Output (TDO). This signal carries test
data out of the QDSX via the IEEE P1149.1 test
access port. TDO is updated on the falling edge
of TCK. TDO is a tristate output which is inactive
except when scanning of data is in progress.
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE
26
PMC [ PMC-SIERRA, INC ]
