PM7375-SC datasheet(48/430 Pages) PMC

48 / 430 page

PM7375 LASAR-155

DATA SHEET

PMC-931127

ISSUE 6

LOCAL ATM SAR & PHYSICAL LAYER

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

RDB

I/O

162

For slave mode operation the active low read enable

(RDB) signal is configured as an input. RDB is low

during LASAR-155 Microprocessor Interface Port

D[15:0] bus with the contents of the addressed register

while RDB and CSB are low.

For master mode operation the active low read enable

(RDB) signal is configured as an output. RDB is low

during LASAR-155 Local Bus read accesses. The

device being read should drive the D[7:0] bus with the

contents of the addressed memory location while RDB

and either CS1B or CS2B is low. For this mode of

operation RDB is generated on the rising edge of

PCICLK.

WRB

I/O

163

For slave mode operation the active low write strobe

(WRB) signal is configured as an input. WRB is low

during a LASAR-155 Microprocessor Interface Port

clocked into the addressed register on the rising WRB

edge while CSB is low.

For master mode operation the active low write strobe

(WRB) signal is configured as an output. WRB is low

during a LASAR-155 Local Bus write accesses. D[7:0]

bus contents are clocked into the addressed memory

location of the device being written to on the rising

WRB edge while either CS1B or CS2B is low. For this

mode of operation WRB is generated on the rising

edge of PCICLK.

PM7375-SC Datasheet(PDF) 48 Page - PMC-Sierra, Inc