PM7340-PI datasheet(35/334 Pages) PMC

35 / 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

RDAT[15]

RDAT[14]

RDAT[13]

RDAT[12]

RDAT[11]

RDAT[10]

RDAT[9]

RDAT[8]

RDAT[7]

RDAT[6]

RDAT[5]

RDAT[4]

RDAT[3]

RDAT[2]

RDAT[1]

RDAT[0]

Output

U22

T22

U19

R20

R22

T19

R19

P20

P21

P22

P19

N20

N21

N22

N19

M20

The Receive Cell Data (RDAT[15:0]) signals carry

the ATM cell words that have been read from the

S/UNI-IMA-8 internal cell buffers. When this

interface is operating in 8-bit mode, the data is

carried on RDAT[7:0].

The RDAT[15:0] output bus is updated on the rising

edge of RCLK.

RPRTY

Output

M22

The Receive Parity (RPRTY) signal provides the

parity (programmable for odd or even parity) of the

RDAT[15:0] bus. When the interface is operating in

8-bit mode, the parity is calculated over RDAT[7:0]

The RPRTY output is updated on the rising edge of

RCLK.

9.1 Receive Slave ATM Interface (UTOPIA L2 mode) (26 Signals)

Pin Name

Type

No.

Function

RCLK

Input

T21

The Receive Clock (RCLK) signal is used to

transfer data blocks from the S/UNI-IMA-8 across

the receive UTOPIA L2 interface.

The RCA, RSOC, RDAT[15:0], and RPRTY outputs

are updated on the rising edge of RCLK. The RENB

and RADR[4:0] inputs are sampled on the rising

edge of RCLK.

The RCLK input must cycle at a 52 MHz or lower

instantaneous rate.

PM7340-PI Datasheet(PDF) 35 Page - PMC-Sierra, Inc

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