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RELEASED
PM7351 S/UNI-VORTEX
DATA SHEET
PMC-1980582
ISSUE 5
OCTAL SERIAL LINK MULTIPLEXER
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE
23
Ball
Name
Type
Ball
No.
Function
WRB
Input
AC17 The active-low write strobe (WRB) signal is low during
S/UNI-VORTEX register write accesses. The D[7:0]
bus contents are clocked into the addressed register
on the rising WRB edge while CSB is low.
D[7]
D[6]
D[5]
D[4]
D[3]
D[2]
D[1]
D[0]
I/O
AC14
AB14
AA14
AC15
Y14
AB15
AA15
AB16
The bi-directional data bus D[7:0] is used during
S/UNI-VORTEX register read and write accesses.
A[9]/TRS
A[8]
A[7]
A[6]
A[5]
A[4]
A[3]
A[2]
A[1]
A[0]
Input AB18
AC19
Y17
AA18
AB19
AC20
AA19
AB20
AC21
Y19
The address bus A[9:0] selects specific registers
during S/UNI-VORTEX register accesses.
The test register select (TRS) signal selects between
normal and test mode register accesses. TRS is high
during test mode register accesses, and is low during
normal mode register accesses.
RSTB
Input
AA16 The active-low reset (RSTB) signal provides an
asynchronous S/UNI-VORTEX reset. RSTB is a
Schmitt triggered input with an integral pull-up resistor.
ALE
Input
AB17 The address latch enable (ALE) is active-high and
latches the address bus A[9:0] when low. When ALE
is high, the internal address latches are transparent.
It allows the S/UNI-VORTEX to interface to a
multiplexed address/data bus. ALE has an integral
pull-up resistor.
INTB
OD
Output
Y13
The active-low interrupt (INTB) signal goes low when
a S/UNI-VORTEX interrupt source is active and that
source is unmasked. The S/UNI-VORTEX may be
enabled to report many alarms or events via
interrupts. INTB becomes high impedance when the
interrupt is acknowledged via an appropriate register
access. INTB is an open drain output.
JTAG Boundary Scan Port