Datasheet

1394 OHCI Memory-Mapped Register Space

155

March 5 2007 − June 2011 SCPS154C

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.

OHCI register offset: 108h set register

10Ch clear register

Default value: 0000 0000h

BIT NUMBER 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16

RESET STATE 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

BIT NUMBER 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0

RESET STATE 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

Table 8−28. Asynchronous Request Filter Low Register Description

BIT FIELD NAME TYPE DESCRIPTION

31 asynReqResource31 RSC If bit 31 is set to 1b for local bus node number 31, then asynchronous requests received by the

controller from that node are accepted.

30 asynReqResource30 RSC If bit 30 is set to 1b for local bus node number 30, then 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.

1 asynReqResource1 RSC If bit 1 is set to 1b for local bus node number 1, then asynchronous requests received by the

controller from that node are accepted.

0 asynReqResource0 RSC If bit 0 is set to 1b for local bus node number 0, then asynchronous requests received by the

controller from that node are accepted.

Not Recommended for New Designs