PM7340-PI datasheet(33/334 Pages) PMC

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PRELIMINARY

INVERSE MULTIPLEXING OVER ATM

PM7340 S/UNI-IMA-8

DATA SHEET

PMC-2001723

ISSUE 3

INVERSE MULTIPLEXING OVER ATM

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

PIN DESCRIPTION

Receive Slave ATM Interface (Any-PHY mode) (28 Signals)

Pin Name

Type

No.

Function

RCLK

Input

T21

The Receive Clock (RCLK) signal is used to

transfer data blocks from the S/UNI-IMA-8 across

the receive Any-PHY interface.

The RPA, RSOP, RSX, RDAT[15:0], and RPRTY

outputs are updated on the rising edge of RCLK.

The RENB, RADR[4:0], and RCSB inputs are

sampled on the rising edge of RCLK.

The RCLK input must cycle at a 52 MHz or lower

instantaneous rate.

RPA

Tristate

Output

AB22 The Receive Packet Available (RPA) is an active

high signal that indicates whether at least one cell is

queued for transfer.

The S/UNI-IMA-8 device drives the RPA with the cell

availability status two RCLK cycles after RADR[4:0]

matches the S/UNI IMA’s device address. The RPA

output is high-impedance at all other times.

The RPA output is updated on the rising edge of

RCLK.

RENB

Input

W20

The Receive Enable Bar (RENB) is an active low

signal used to initiate the transfer of cells from the

S/UNI-IMA-8 to an ATM layer component, such as a

traffic management device.

The RENB input is sampled on the rising edge of

RCLK.

PM7340-PI Datasheet(PDF) 33 Page - PMC-Sierra, Inc

PM7340-PI Datasheet(HTML) 33 Page - PMC-Sierra, Inc

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