PM5347S Datasheet, PDF (52/302 Pages) PMC-Sierra, Inc – SATURN USER NETWORK INTERFACE PLUS

PM5347 S/UNI-PLUS
DATA SHEET
PMC-941033
ISSUE 6
SATURN USER NETWORK INTERFACE PLUS
Pin Name Type
RDB
Input
WRB
Input
D[0]
D[1]
D[2]
D[3]
D[4]
D[5]
D[6]
D[7]
A[0]
A[1]
A[2]
A[3]
A[4]
A[5]
A[6]
A[7]/TRS
I/O
Input
Pin Function
No.
24 The active low read enable (RDB) signal is low
during S/UNI-PLUS register read accesses. The
S/UNI-PLUS drives the D[7:0] bus with the
contents of the addressed register while RDB and
CSB are low.
23 The active low write strobe (WRB) signal is low
during a S/UNI-PLUS register write accesses.
The D[7:0] bus contents are clocked into the
addressed register on the rising WRB edge while
CSB is low.
27 The bidirectional data bus D[7:0] is used during
28 ^{S/UNI-PLUS register read and write accesses.}
31
32
35
36
39
40
12 The address bus A[7:0] selects specific registers
13 ^{during S/UNI-PLUS register accesses.}
14
15
16
17
18
19 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.
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE 36