PCI7421 datasheet(214/298 Pages) TI

214 / 298 page

8−34

8.36 Asynchronous Request Filter Low Register

The asynchronous request filter low set/clear register enables asynchronous receive requests on a per-node basis,

and handles the lower node IDs. Other than filtering different node IDs, this register behaves identically to the

asynchronous request filter high register. See Table 8−28 for a complete description of the register contents.

Bit

Name

Asynchronous request filter low

Type

RSC

Default

Bit

Name

Asynchronous request filter low

Type

RSC

Default

Asynchronous request filter low

Offset:

108h

set register

10Ch

clear register

Type:

Read/Set/Clear

Default:

0000 0000h

Table 8−28. Asynchronous Request Filter Low Register Description

BIT

FIELD NAME

TYPE

DESCRIPTION

asynReqResource31

RSC

If bit 31 is set to 1 for local bus node number 31, asynchronous requests received by the controller

from that node are accepted.

asynReqResource30

RSC

If bit 30 is set to 1 for local bus node number 30, asynchronous requests received by the controller

from that node are accepted.

29−2

asynReqResourcen

RSC

Bits 29 through 2 (asynReqResourcen, where n = 29, 28, 27,

…, 2) follow the same pattern as

bits 31 and 30.

asynReqResource1

RSC

If bit 1 is set to 1 for local bus node number 1, asynchronous requests received by the controller

from that node are accepted.

asynReqResource0

RSC

If bit 0 is set to 1 for local bus node number 0, asynchronous requests received by the controller

from that node are accepted.

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