PM7344 datasheet(244/293 Pages) PMC

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PM7344 S/UNI-MPH

DATA SHEET

PMC-950449

ISSUE 6

MULTI-PHY USER NETWORK INTERFACE

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

228

The S/UNI-MPH is configured for direct PHY selection (MPHEN = 0). The

TCA[x] cell available indicators signal when a cell is available in the

corresponding PHY's transmit FIFO (shown with TFULL4 in the TXCP Interrupt

Enable / Status and Control Register set to logic 1). The TWRENB[x] input is

brought low to begin the cell transfer. Only one TWRENB[x] should be active

during a cell transfer.

Figure 23

- Direct-PHY Selection Receive Cell Interface (MPHEN = 0)

RDAT[7:0]

P48

P46

RCA[x]

RSOC

RXPRTY

P45

P44

P43

P47

RFCLK

RRDENB[x]

…

REMPTY4=1

The S/UNI-MPH is configured for direct PHY selection (MPHEN = 0). The

RCA[x] cell available indicators signal when a cell is available in the

corresponding PHY's receive FIFO. The RRDENB[x] input is brought low to

begin the cell transfer. Only one RRDENB[x] should be active during a cell

transfer.

Figure 24

- Multi-PHY Addressing Transmit Cell Interface (MPHEN = 1)

• • •

P46

P47

P48

TWA[1:0]

TFCLK

TCAMPH

TSOC

TDAT[ 7:0]

TXPRTY

TWRMPHB

PM7344 Datasheet(PDF) 244 Page - PMC-Sierra, Inc

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