PM8611 datasheet(21/292 Pages) PMC

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SBSLITE™ Telecom Standard Product Data Sheet

Preliminary

Proprietary and Confidential to PMC-Sierra, Inc., and for its Customers’ Internal Use

Document ID: PMC-2010883, Issue 2

Pin Description

Pin Name

Type

No.

Function

Receive Serial Data Interface (5 Signals)

RPWRK

RNWRK

Analog

LVDS

Input

Receive Working Serial Data. In SBI336 mode, the differential

receive working serial data link (RPWRK/RNWRK) carries the

receive 77.76 MHz SBI336 data from an upstream working source,

in bit serial format, SBI336S.

In TelecomBus mode, RPWRK/RNWRK carries the receive 77.76

MHz TelecomBus from an upstream working source, in bit serial

format.

Data on RPWRK/RNWRK is encoded in an 8B/10B format

extended from IEEE Std. 802.3. The 8B/10B character bit ‘a’ is

transmitted first and the bit ‘j’ is transmitted last.

RPWRK/RNWRK are nominally 777.6 Mbit/s data streams.

RPPROT

RNPROT

Analog

LVDS

Input

Receive Protect Serial Data. In SBI336 mode, the differential

receive protect serial data link (RPPROT/RNPROT) carries the

receive 77.76 MHz SBI336 data from an upstream protect source,

in bit serial format, SBI336S.

In TelecomBus mode, RPPROT/RNPROT carries the receive

77.76 MHz TelecomBus from an upstream protection source, in bit

serial format.

Data on RPPROT/RNPROT is encoded in an 8B/10B format

extended from IEEE Std. 802.3. The 8B/10B character bit ‘a’ is

transmitted first and the bit ‘j’ is transmitted last.

RPPROT/RNPROT are nominally 777.6 Mbit/s data streams.

RC1FP

Input

Receive Serial Frame Pulse. The receive serial SBI336S frame

pulse signal (RC1FP) provides system timing of the receive serial

interface.

When using the receive serial interface, RC1FP is set high once

every multiframe (4 frames for SBI without CAS, 48 frames for SBI

with CAS, and 4 frames for TelecomBus), or multiple thereof. The

RC1FP_DLY[13:0] bits (register 007H) are used to align the C1

frame boundary 8B/10B character on the receive serial interface

(RPWRK/RNWRK and RPPROT/RNPROT) with RC1FP.

RC1FP is sampled on the rising edge of SYSCLK.

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