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PM5356 Datasheet(PDF) 41 Page - PMC-Sierra, Inc

Part # PM5356
Description  SATURN USER NETWORK INTERFACE (622-MAX)
PDF  307 Pages
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Manufacturer  PMC [PMC-Sierra, Inc]
Direct Link  http://www.pmc-sierra.com
Logo PMC - PMC-Sierra, Inc

PM5356 Datasheet(HTML) 41 Page - PMC-Sierra, Inc

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RELEASED
S/UNI-622-MAX
PMC-Sierra, Inc.
PM5356
S/UNI-622-MAX
DATASHEET
PMC-1980589
ISSUE 6
SATURN USER NETWORK INTERFACE (622-MAX)
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA INC., AND FOR ITS CUSTOMERS’ INTERNAL USE
31
9.5
Microprocessor Interface Signals
Pin Name
Type
Pin
No.
Function
CSB
Input
C11
The active-low chip select (CSB) signal is low during
S/UNI-622-MAX register accesses.
When CSB is high, the RDB and WRB inputs are
ignored. When CSB is low, the RDB and WRB are
valid. CSB must be high when RSTB is low to
properly reset the chip.
If CSB is not required (i.e., registers accesses are
controlled using the RDB and WRB signals only),
CSB must be connected to an inverted version of the
RSTB input.
RDB
Input
B11
The active-low read enable (RDB) signal is low during
S/UNI-622-MAX register read accesses. The S/UNI-
622-MAX drives the D[7:0] bus with the contents of
the addressed register while RDB and CSB are low.
WRB
Input
A11
The active-low write strobe (WRB) signal is low
during a S/UNI-622-MAX 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[0]
D[1]
D[2]
D[3]
D[4]
D[5]
D[6]
D[7]
I/O
B17
A17
C16
B16
C15
B15
A15
D14
The bi-directional data bus D[7:0] is used during
S/UNI-622-MAX register read and write accesses.
A[0]
A[1]
A[2]
A[3]
A[4]
A[5]
A[6]
A[7]
Input
B14
A14
D13
C13
B13
A13
C12
B12
The address bus A[7:0] selects specific registers
during S/UNI-622-MAX register accesses.



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