TNETA1575 datasheet(12/45 Pages) TI1

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TNETA1575

ATM SEGMENTATION AND REASSEMBLY DEVICE

WITH PCI-HOST AND COPROCESSOR INTERFACES

SDNS040C – MAY 1996 – REVISED JUNE 1998

POST OFFICE BOX 655303

• DALLAS, TEXAS 75265

segmentation interface, PHY mode

The segmentation-unit interface on the TNETA1575 operates as the RX UTOPIA interface on a PHY device

when the TNETA1575 is operating in PHY mode. The PHY/ATM input terminal has to be high to operate in PHY

mode.

This cell interface works on the low-to-high transition of SEGCLK to sample and generate signals. All signals

are active high, unless noted with a bar above the signal name.

TNETA1575 SIGNAL NAME

TNETA1575 TERMINAL NUMBER

UTOPIA SIGNAL NAME

SEGCLK

RXCLK

SEGDATA7–SEGDATA0

84–87, 89–92

RXDATA7–RXDATA0

SEGPAR

RXPRTY

SEGSOC

RXSOC

SEGEN

RXENB

SEGCLAV

RXCLAV/RXEMPTY

reassembly interface, PHY mode

The reassembly-unit interface on the TNETA1575 functions as the TX UTOPIA interface in a PHY device when

the TNETA1575 is operating in PHY mode.

This reassembly-cell interface works on the low-to-high transition of RESCLK to sample and generate signals.

All signals are active high, unless noted with a bar above the signal name.

TNETA1575 SIGNAL NAME

TNETA1575 TERMINAL NUMBER

UTOPIA SIGNAL NAME

RESCLK

TXCLK

RESDATA7–RESDATA0

72–75, 77–80

TXDATA7–TXDATA0

RESPAR

TXPRTY

RESSOC

TXSOC

RESEN

TXENB

RESCLAV

TXCLAV/TXFULL

RESPERR

N/A

TNETA1575 Datasheet(PDF) 12 Page - Texas Instruments

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