PM7341 datasheet(61/413 Pages) PMC

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PRELIMINARY

INVERSE MULTIPLEXING OVER ATM

PM7341 S/UNI-IMA-84

DATASHEET

PMC-2000223

ISSUE 4

INVERSE MULTIPLEXING OVER ATM

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

Pin Name

Type

No.

Function

ADP

Tristate

Output

The Add Bus Data Parity (ADP) signal carries the

even or odd parity for the add bus signals. The parity

calculation encompasses ADATA[7:0], APL and AV5

signals.

The selection of even or odd parity is made via

SBI_PAR_CTL bit of SBI Insert Control Register.

The S/UNI-IMA-84 drives ADP only at uniquely

assigned tributary columns within the SBI BUS

structure.

The ADP output signal is updated on the rising edge

of REFCLK.

APL

Tristate

Output

The Active High Add Bus Payload (APL) is an

active high signal that indicates valid data within the

SBI BUS structure. This active high signal is

asserted during all octets making up a tributary. This

signal goes high during the V3 or H3 octet within a

tributary to accommodate negative timing

adjustments between the tributary rate and the fixed

SBI BUS structure. This signal goes low during the

octet after the V3 or H3 octet within a tributary to

accommodate positive timing adjustments between

the tributary rate and the fixed SBI BUS structure.

The S/UNI-IMA-84 drives the APL only at uniquely

assigned tributary columns within the SBI BUS

structure.

The APL output signal is updated on the rising edge

of REFCLK.

PM7341 Datasheet(PDF) 61 Page - PMC-Sierra, Inc

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