TNETA1575

ATM SEGMENTATION AND REASSEMBLY DEVICE

WITH PCI-HOST AND COPROCESSOR INTERFACES

SDNS040C – MAY 1996 – REVISED JUNE 1998

15

POST OFFICE BOX 655303

connecting the TNETA1575 to the UTOPIA bus (see Figure 2 and Note A)

TNETA1500

TNETA1575

ATM mode

ATMCLK1 (82)

ATMCLK2 (64)

RESCLK (66)

RESDATA7–RESDATA0 (72–75, 77–80)

RXData

RXClk

RESSOC (70)

RXSoc

RESEN (67)

RXClav/RXEmpty

RESCLAV (69)

RXEnb

RESPAR (71)

RESPERR (81)

SEGCLK (95)

TXClk

SEGDATA(7–0) (84–87, 89–92)

TXData

SEGSOC (97)

TXSoc

SEGEN (96)

TXFull/TXClav

SEGCLAV (98)

TXEnb

SEGPAR (94)

PHY/ATM (83)

TNETA1585

ATM mode

RXCLK (24)

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

RXSOC (21)

RXEMPTY/RXCLAV (22)

RXEN (23)

CONFIG (9)

UTOPIA

Bus

RXData7–RXData0

RXSoc

RXClav/RXEmpty

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

NOTE A: Figures 1 and 2 show the interconnections needed to interface to a TNETA1585 device. If the TNETA1575 is operated without the

external scheduler device, then the lines going to the TNETA1585 are ignored, and everything remains as depicted above.

CLOCK (26)

Figure 2. UTOPIA Bus Connections in ATM Mode