PM7346 datasheet(67/419 Pages) PMC

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PM7346 S/UNI-QJET

DATASHEET

PMC-960835

ISSUE 6

SATURN QUAD USER NETWORK INTERFACE FOR J2, E3, T3

PMC-SIERRA, INC. PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA INC., AND ITS CUSTOMERS’ INTERNAL USE 46

Pin Name

Type

Pin No.

Function

RDAT[15]

RDAT[14]

RDAT[13]

RDAT[12]

RDAT[11]

RDAT[10]

RDAT[9]

RDAT[8]

RDAT[7]

RDAT[6]

RDAT[5]

RDAT[4]

RDAT[3]

RDAT[2]

RDAT[1]

RDAT[0]

Output

T20

T19

R17

T18

U20

U19

T17

U18

V17

U16

W17

Y17

V16

U15

W16

Y16

Receive Cell Data Bus (RDAT[15:0]). This

bus carries the ATM cell octets that are

read from the receive ATM FIFO selected

by RADR[4:0]. RDAT[15:0] is tri-stated

when RENB is high. RDAT[15:0] is

updated on the rising edge of RFCLK.

The S/UNI-QJET can be configured to

operate with an 8-bit wide or 16-bit wide

ATM data interface via the ATM8 input pin.

RDAT[15:8] will remain tri-stated if ATM8 is

set to logic 1.

RDAT[15:0] is tri-stated when either the

null-PHY address (1FH) or an address not

matching the address space set by

PHY_ADR[2:0] is latched from the

RADR[4:2] inputs when RENB is high.

RPRTY

Output

R18

Receive Parity (RPRTY). The receive

parity (RPRTY) signal indicates the parity

of the RDAT bus.

The S/UNI-QJET can be configured to

operate with an 8-bit wide or 16-bit wide

ATM data interface via the ATM8 input pin.

In the 8-bit mode, RPRTY reflects the

parity of RDAT[7:0]. In the 16-bit mode,

RPRTY reflects the parity of RDAT[15:0].

Odd or even parity selection is made using

the RXPTYP register bit.

RPRTY is tri-stated when either the null-

PHY address (1FH) or an address not

matching the address space set by

PHY_ADR[2:0] is latched from the

RADR[4:2] inputs when RENB is high.

PM7346 Datasheet(PDF) 67 Page - PMC-Sierra, Inc

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