PM7341 datasheet(52/413 Pages) PMC

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PRELIMINARY

INVERSE MULTIPLEXING OVER ATM

PM7341 S/UNI-IMA-84

DATASHEET

PMC-2000223

ISSUE 4

INVERSE MULTIPLEXING OVER ATM

PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE

Pin Name

Type

No.

Function

CBA[11]

CBA[10]

CBA[9]

CBA[8]

CBA[7]

CBA[6]

CBA[5]

CBA[4]

CBA[3]

CBA[2]

CBA[1]

CBA[0]

Output AD10

AF11

AE12

AF12

AD11

AE13

AC12

AF13

AD12

AE14

AD13

AE15

The Cell Buffer SDRAM Address (CBA[11:0])

signals identify the row address (CBA[11:0]) and

column address (CBA[7:0]) for the locations

accessed.

The CBA[11:0] output is updated on the rising edge

of SYSCLK.

CBBS[1]

CBBS[0]

Output

AD14

AF15

The Cell Buffer SDRAM Bank Select (CBBS[1:0])

signals determine which bank of a dual/quad bank

Cell Buffer SDRAM chip is active. CBBS is

generated along with the row address when

CBRASB is asserted low.

The CBBS[1:0] outputs are updated on the rising

edge of SYSCLK.

CBDQM

Output

AE16

The Cell Buffer SDRAM Input/Output Data Mask

(CBDQM) signal is held high until the SDRAM

initialization is complete and then set low for normal

operation.

The CBDQM output is updated on the rising edge of

SYSCLK.

PM7341 Datasheet(PDF) 52 Page - PMC-Sierra, Inc

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