PCI7421 datasheet(212/298 Pages) TI

212 / 298 page

8−32

8.35 Asynchronous Request Filter High Register

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

and handles the upper node IDs. When a packet is destined for either the physical request context or the ARRQ

context, the source node ID is examined. If the bit corresponding to the node ID is not set to 1 in this register, then

the packet is not acknowledged and the request is not queued. The node ID comparison is done if the source node

is on the same bus as the PCI7x21/PCI7x11 controller. Nonlocal bus-sourced packets are not acknowledged unless

bit 31 in this register is set to 1. See Table 8−27 for a complete description of the register contents.

Bit

Name

Asynchronous request filter high

Type

RSC

Default

Bit

Name

Asynchronous request filter high

Type

RSC

Default

Asynchronous request filter high

Offset:

100h

set register

104h

clear register

Type:

Read/Set/Clear

Default:

0000 0000h

Table 8−27. Asynchronous Request Filter High Register Description

BIT

FIELD NAME

TYPE

DESCRIPTION

asynReqAllBuses

RSC

If bit 31 is set to 1, all asynchronous requests received by the controller from nonlocal bus nodes

are accepted.

asynReqResource62

RSC

If bit 30 is set to 1 for local bus node number 62, asynchronous requests received by the controller

from that node are accepted.

asynReqResource61

RSC

If bit 29 is set to 1 for local bus node number 61, asynchronous requests received by the controller

from that node are accepted.

asynReqResource60

RSC

If bit 28 is set to 1 for local bus node number 60, asynchronous requests received by the controller

from that node are accepted.

asynReqResource59

RSC

If bit 27 is set to 1 for local bus node number 59, asynchronous requests received by the controller

from that node are accepted.

asynReqResource58

RSC

If bit 26 is set to 1 for local bus node number 58, asynchronous requests received by the controller

from that node are accepted.

asynReqResource57

RSC

If bit 25 is set to 1 for local bus node number 57, asynchronous requests received by the controller

from that node are accepted.

asynReqResource56

RSC

If bit 24 is set to 1 for local bus node number 56, asynchronous requests received by the controller

from that node are accepted.

asynReqResource55

RSC

If bit 23 is set to 1 for local bus node number 55, asynchronous requests received by the controller

from that node are accepted.

asynReqResource54

RSC

If bit 22 is set to 1 for local bus node number 54, asynchronous requests received by the controller

from that node are accepted.

asynReqResource53

RSC

If bit 21 is set to 1 for local bus node number 53, asynchronous requests received by the controller

from that node are accepted.

asynReqResource52

RSC

If bit 20 is set to 1 for local bus node number 52, asynchronous requests received by the controller

from that node are accepted.

asynReqResource51

RSC

If bit 19 is set to 1 for local bus node number 51, asynchronous requests received by the controller

from that node are accepted.

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