PM5347 datasheet(51/302 Pages) PMC

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PM5347 S/UNI-PLUS

DATA SHEET

PMC-941033

ISSUE 6

SATURN USER NETWORK INTERFACE PLUS

PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE

Pin Name

Type

No.

Function

TCP

Output

The transmit cell pulse (TCP) signal is provided to

locate the most significant GFC bit (GFC[3]) of a

cell's GFC field sourced on input TGFC. TCP

pulses high for one SPECLK period to identify the

SPECLK cycle before the cycle the GFC[3] bit is

output on TGFC. TCP is updated on the falling

edge of GTOCLK.

TGFC

Input

The transmit generic flow control (TGFC) input

contains GFC bits that can be inserted into the

GFC fields of transmitted cells (including

idle/unassigned cells). Insertion is controlled

using bits in the TACP Fixed Stuff/GFC register.

TGFC is sampled on the rising edge of GTOCLK.

POP[3]

POP[2]

POP[1]

POP[0]

Output

105

106

107

108

The parallel output port (POP[3:0]) is used to

control the operation of PMD devices. The signal

levels on this parallel output port correspond to

the bit values contained in the S/UNI-PLUS

Parallel I/O Port Register.

PIP[3]

PIP[2]

PIP[1]

PIP[0]

Input

109

110

111

112

The parallel input port (PIP[3:0]) is used to

monitor the operation of PMD devices. An

interrupt may be generated when state changes

are detected on the monitored signals. The real-

time signal levels on this port are available in the

S/UNI-PLUS Parallel I/O Port register. Each of the

inputs contains an internal pull-down resistor.

CSB

Input

The active low chip select (CSB) signal is low

during S/UNI-PLUS register accesses.

Note when not being used, CSB should be tied

high. If CSB is not required (i.e. register accesses

controlled using the RDB and WRB signals only),

CSB should be connected to an inverted version

of the RSTB input.

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PM5347 数据表(PDF) 51 Page - PMC-Sierra, Inc

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