PM7346 datasheet(59/419 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 38

Pin Name

Type

Pin No.

Function

ROVRHD[4]

ROVRHD[3]

ROVRHD[2]

ROVRHD[1]

Output

V13

V10

Framer Receive Overhead Indication

(ROVRHD[4:1]). ROVRHD[4:1] is valid

when the S/UNI-QJET is configured as a

DS3, E3, or J2 framer for non-ATM

applications by setting the FRMRONLY bit

in the S/UNI-QJET Configuration 1

Registers. ROVRHD[4:1] will be high

whenever the data on RDATO[4:1]

corresponds to an overhead bit position.

ROVRHD[4:1] is updated on the either the

falling or rising edge of RSCLK[4:1]

depending on the setting of the RSCLKR

bit in the S/UNI-QJET Receive

Configuration register.

RPOHCLK[4]

RPOHCLK[3]

RPOHCLK[2]

RPOHCLK[1]

Output

W13

U10

Receive PLCP Overhead Clock

(RPOHCLK[4:1]). RPOHCLK[4:1] is active

when PLCP processing is enabled. The

frequency of this signal depends on the

selected PLCP format. RPOHCLK[4:1] is

nominally a 26.7 kHz clock for a DS1

PLCP frame, a 768 kHz clock for a DS3

PLCP frame, a 33.7 kHz clock for an E1

based PLCP frame, or a 576 kHz clock for

a G.751 E3 based PLCP frame.

RPOHFP[4:1] and RPOH[4:1] are updated

on the falling edge of RPOHCLK[4:1].

RSCLK[4]

RSCLK[3]

RSCLK[2]

RSCLK[1]

Framer Recovered Clock (RSCLK[4:1]).

RSCLK[4:1] is valid when the S/UNI-QJET

is configured as a DS3, E3, or J2 framer

for non-ATM applications by setting the

FRMRONLY bit in the S/UNI-QJET

Configuration Register.

RSCLK[4:1] is the recovered clock and

timing reference for RDATO[4:1],

RFPO/RMFPO[4:1], and ROVRHD[4:1].

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