PM7340-PI datasheet(63/334 Pages) PMC

63 / 334 page

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

high, respectively. The RPA

is driven with the cell

availability status one CLK

cycle after the RADR[4:0]

pins match the S/UNI-IMA-

8’s address. A match is

defined as either matching

the programmed value in

single PHY mode or being

within the correct range for

multi-PHY mode.

following the one that

samples RENB low or high,

respectively. The RPA is

driven with the cell

availability status two CLK

cycles after RADR[4:0] pins

match the S/UNI-IMA-8’s

address.

RSX

Undefined. It is low when not

high impedance.

High coincident with the first

word of the cell data

structure.

RSOP

High coincident with the first

word of the cell data

structure.

High coincident with the first

byte of the cell header.

Paused

transfers

Permitted by deasserting

RENB high, but the S/UNI-

IMA’s address must be

presented on RADR[4:0] the

last cycle RENB is high to

reselect the same PHY.

Not Permitted.

Autonomous

deselection

Not supported. A subsequent

cell is output (provided one is

available) if RENB is held

low beyond the end of a cell.

The outputs become high

impedance after the last

word of a cell is transferred

and until the S/UNI-IMA-8 is

reselected.

The cell format for the receive direction is the same as the transmit interface; see

Figure 7 and Figure 8 for the formats.

PM7340-PI Datasheet(PDF) 63 Page - PMC-Sierra, Inc

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