PM7340 datasheet(45/334 Pages) PMC

45 / 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

9.5 SDRAM I/F (35 Signals)

Pin Name

Type

No.

Function

CBCSB

Output AB6

The Cell Buffer SDRAM Chip Select Bar (CBCSB)

is an active low signal used to control the SDRAM.

CBCSB, CBRASB, CBCASB, and CBWEB define

the command being sent to the SDRAM.

The CBCSB output is updated on the rising edge of

SYSCLK.

CBRASB

Output AB7

The Cell Buffer SDRAM Row Address Strobe Bar

(CBRASB) is an active low signal used to control the

SDRAM.

CBCSB, CBRASB, CBCASB, and CBWEB define

the command being sent to the SDRAM.

The CBRASB output is updated on the rising edge

of SYSCLK.

CBCASB

Output W6

The Cell Buffer SDRAM Column Address Strobe

Bar (CBCASB) is an active low signal used to

control the SDRAM.

CBCSB, CBRASB, CBCASB, and CBWEB define

the command being sent to the SDRAM.

The CBCASB output is updated on the rising edge

of SYSCLK.

CBWEB

Output Y8

The Cell Buffer SDRAM Write Enable Bar

(CBWEB) is an active low signal used to control the

SDRAM.

CBCSB, CBRASB, CBCASB, and CBWEB define

the command being sent to the SDRAM.

The CBWEB output is updated on the rising edge of

SYSCLK.

PM7340 Datasheet(PDF) 45 Page - PMC-Sierra, Inc

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