PM3350-SW datasheet(184/224 Pages) PMC

184 / 224 page

ELAN 8X10

PM3350 ELAN 8 X10

DATA SHEET

PMC-970109

ISSUE 3

8 PORT ETHERNET SWITCH

PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND PMC-SIERRA, INC. CUSTOMERS ONLY

182

CTRSEL[3:0]:

Selects the counter to view .

CTRSEL[3:0]

CTRDATA[11:0]

0000

rcountq0

0001

rcountq1

0010

rcountq2

0011

rcountq3

0100

rcountq4

0101

rcountq5

0110

rcountq6

0111

rcountq7

1000

acountq0

1001

acountq1

1010

acountq2

1011

acountq3

1100

acountq4

1101

acountq5

1110

acountq6

1111

acountq7

Bit

Type

Function

Default

Bit 15 to 0

R/W

CTRDATA[15:0]

During normal switching applications the CTRDATA register will be left in the

default state and is unused. It is implemented solely for factory test.

CTRDATA[15:0]:

The data from the selected counter bank. This allows the Switch Processor

to read or write one of the eight RCOUNT or eight ACOUNT registers that are

also mapped into the PCI host register space.

The Switch Processor can READ a selected Request or Acknowledge

counter as follows:

• the CTRSEL register is written with the CTRSEL.en_wr_counter bit

clear (0) and the CTRSEL[3:0] field set to access the desired counter.

• there is a minimum of one processor delay slot

PM3350-SW Datasheet(PDF) 184 Page - PMC-Sierra, Inc

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