PM7340-PI datasheet(40/334 Pages) PMC

40 / 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

Pin Name

Type

No.

Function

TDAT[15]

TDAT[14]

TDAT[13]

TDAT[12]

TDAT[11]

TDAT[10]

TDAT[9]

TDAT[8]

TDAT[7]

TDAT[6]

TDAT[5]

TDAT[4]

TDAT[3]

TDAT[2]

TDAT[1]

TDAT[0]

Input

H21

H20

F19

G22

G21

F22

G20

F21

E22

C20

E21

C22

E20

D21

C21

B22

The Transmit Cell Data (TDAT[15:0]) signals carry

the ATM cell octets that are transferred to the

internal cell buffer. When this interface is operating

in 8-bit mode, only TDAT[7:0] is used.

The TDAT[15:0] input bus is sampled on the rising

edge of TCLK.

TPRTY

Input

D20 The Transmit Parity (TPRTY) signal provides the

parity (programmable for odd or even parity) of the

TDAT[15:0] bus. The TPRTY signal is considered

valid only when valid data and inband address are

transferring as indicated by the TENB signal

asserted low or the TSX signal asserted high. When

this interface is operating in 8-bit mode, this signal

provides the parity of TDAT[7:0].

A parity error is indicated by a status bit and a

maskable interrupt.

The TPRTY input signal is sampled on the rising

edge of TCLK.

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