TNETA1585

ATM TRAFFIC MANAGEMENT SCHEDULER DEVICE

WITH RECEIVE UTOPIA AND COPROCESSOR INTERFACES

SDNS041A – NOVEMBER 1996 – REVISED JULY 1998

17

POST OFFICE BOX 655303

receive-UTOPIA interface in ATM mode

The receive-UTOPIA interface on the TNETA1585 functions as the RX UTOPIA interface in an ATM device

when the TNETA1585 is operating in ATM mode.

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

TNETA1585

SIGNAL NAME

UTOPIA

SIGNAL NAME

RXCLK

RXCLK

RXDATA7–RXDATA0

RXDATA7–RXDATA0

RXSOC

RXSOC

RXCLAV

RXClav

RXEN

RXEnb

connecting the TNETA1585 to the UTOPIA bus in ATM mode (see Figure 3)

TNETA1500

TNETA1575

ATM mode

ATMCLK1 (82)

ATMCLK2 (64)

RESCLK (66)

RESDATA7–RESDATA0 (72–75, 77–80)

RXData

RESSOC (70)

RXSoc

RESEN (67)

RXClav

RESCLAV (69)

RXEnb

RESPAR (71)

RESPERR (81)

SEGCLK (95)

TXClk

SEGDATA7–SEGDATA0 (84–87, 89–92)

TXData

SEGSOC (97)

TXSoc

SEGEN (96)

TXClav

SEGCLAV (98)

TXEnb

SEGPAR (94)

PHY/ATM (83)

TNETA1585†

ATM mode

RXCLK (24)

RXDATA7–RXDATA0 (10, 12–13, 15–18, 20)

RXSOC (21)

RXCLAV (22)

RXEN (23)

CONFIG (9)

UTOPIA

Bus

RXData7–RXData0

RXSoc

RXClav

GND

GND

(64) TWE

(61) TXAF

(63) TXCELL

(68–71, 74–77) TD7–TD0

(65) TCKI

(119) RRE

(118) RXFE

(117) RXCELL

(92–95, 98–101) RD7–RD0

(120) RCKI

RXClk

CLOCK (26)

† Terminal numbers are for the

PCM package.

Figure 3. UTOPIA Bus Connections in ATM Mode