PM5352 datasheet(20/77 Pages) PMC

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PM5352 S/UNI STAR

DATA SHEET

PMC-1990421

ISSUE 2

SATURN USER NETWORK INTERFACE 155 (STAR)

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

Pin Name

Type

No.

Function

TPRTY

Input

(ATM)

H22

UTOPIA Transmit bus parity (TPRTY) signal.

The transmit parity (TPRTY) signal indicates the

parity of the TDAT[15:0] bus. A parity error is

indicated by a status bit and a maskable interrupt.

Cells with parity errors are inserted in the transmit

stream, so the TPRTY input may be unused. Odd

or even parity selection is made using the RXPTYP

TPRTY is considered valid only when TENB is

simultaneously asserted and the S/UNI-STAR is

selected via TADR[2:0].

TPRTY is sampled on the rising edge of TFCLK.

TPRTY

Input

(POS)

H22

POS-PHY Transmit bus parity (TPRTY) signal.

The transmit parity (TPRTY) signal indicates the

parity of the TDAT[15:0] bus. A parity error is

indicated by a status bit and a maskable interrupt.

Packets with parity errors are inserted in the

transmit stream, so the TPRTY input may be

unused. Odd or even parity selection is made using

the RXPTYP register bit. TPRTY is considered valid

only when TENB is simultaneously asserted and

the S/UNI-STAR is selected via TADR[2:0].

TPRTY is sampled on the rising edge of TFCLK

TSOC

Input

(ATM)

J21

UTOPIA Transmit Start of Cell (TSOC) signal.

The transmit start of cell (TSOC) signal marks the

start of cell on the TDAT bus. When TSOC is high,

the first word of the cell structure is present on the

TDAT bus. It is not necessary for TSOC to be

present for each cell. An interrupt may be

generated if TSOC is high during any word other

than the first word of the cell structure.

TSOC is considered valid only when TENB is

simultaneously asserted and the S/UNI-STAR is

selected via TADR[2:0].

TSOC is sampled on the rising edge of TFCLK.

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