PM5361TUPP
DATA SHEET
PMC-920526
ISSUE 8
TRIBUTARY UNIT PAYLOAD PROCESSOR
Pin Name Type
Pin Function
No.
A[0]
Input
4
The address bus A[7:0] selects specific registers
during TUPP register accesses.
A[1]
5
A[2]
6
A[3]
7
A[4]
8
A[5]
9
A[6]
10
11
A[7]/TRS
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. TRS has an integral pull down
resistor.
RSTB
ALE
Input
Input
31
33
The active low reset (RSTB) signal provides an
asynchronous TUPP reset. RSTB is a Schmitt
triggered input with an integral pull up resistor.
The address latch enable (ALE) is active high
and latches the address bus A[7:0] when low.
When ALE is high, the internal address latches
are transparent. It allows the TUPP to interface
to a multiplexed address/data bus. ALE has an
integral pull up resistor.
INTB
OD
Output
28
The active low interrupt (INTB) signal goes low
when a TUPP interrupt source is active. INTB
returns high when the interrupt is acknowledged
via an appropriate register access. INTB is an
open drain output.
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE
18
PMC [ PMC-SIERRA, INC ]
