PM5347 datasheet(42/302 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

TDAT[0]

TDAT[1]

TDAT[2]

TDAT[3]

TDAT[4]

TDAT[5]

TDAT[6]

TDAT[7]

TDAT[8]

TDAT[9]

TDAT[10]

TDAT[11]

TDAT[12]

TDAT[13]

TDAT[14]

TDAT[15]

Input

The transmit cell data (TDAT[15:0]) bus carries the

ATM cell octets that are written to the transmit

FIFO. When the 16-bit SCI-PHY interface is

selected, (BUS8 is tied low), TDAT[15:0] contains

the 16-bit wide word bus. When the 8-bit SCI-

PHY interface is selected (BUS8 is tied high),

TDAT[7:0] contains the 8-bit wide word bus

(TDAT[15:8] is not used). TDAT[15:0] is sampled

on the rising edge of TFCLK and is considered

valid only when TWRENB is simultaneously

asserted.

TXPRTY[0]

TXPRTY[1]

Input

The transmit parity (TXPRTY[1:0]) signals indicate

the parity of the TDAT[15:0] bus. TXPRTY[1] is

expected to be the parity calculation over the

TDAT[15:8] bus. TXPRTY[0] is expected to be the

parity calculation over the TDAT[7:0] bus.

Alternately, the device can be configured so that

TXPRTY[1] is expected to be the parity calculation

over the entire TDAT[15:0] bus. TXPRTY[0]

should be tied low in this case. Odd or even parity

selection can be made using the TACP FIFO

Control register. TXPRTY[1:0] is sampled on the

rising edge of TFCLK and is considered valid only

when TWRENB is simultaneously asserted.

PM5347 Datasheet(PDF) 42 Page - PMC-Sierra, Inc

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