Datasheet

1394 OHCI Memory-Mapped Register Space
153
March 5 2007 − June 2011 SCPS154C
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 1b 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 controller. Nonlocal bus-sourced packets are not
acknowledged unless bit 31 in this register is set to 1b. See Table 8−27 for a complete description of the
register contents.
OHCI register offset: 100h set register
104h clear register
Register type: Read/Set/Clear
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 8−27. Asynchronous Request Filter High Register Description
BIT FIELD NAME TYPE DESCRIPTION
31 asynReqAllBuses RSC If bit 31 is set to 1b, then all asynchronous requests received by the controller from nonlocal bus
nodes are accepted.
30 asynReqResource62 RSC If bit 30 is set to 1b for local bus node number 62, then asynchronous requests received by the
controller from that node are accepted.
29 asynReqResource61 RSC If bit 29 is set to 1b for local bus node number 61, then asynchronous requests received by the
controller from that node are accepted.
28 asynReqResource60 RSC If bit 28 is set to 1b for local bus node number 60, then asynchronous requests received by the
controller from that node are accepted.
27 asynReqResource59 RSC If bit 27 is set to 1b for local bus node number 59, then asynchronous requests received by the
controller from that node are accepted.
26 asynReqResource58 RSC If bit 26 is set to 1b for local bus node number 58, then asynchronous requests received by the
controller from that node are accepted.
25 asynReqResource57 RSC If bit 25 is set to 1b for local bus node number 57, then asynchronous requests received by the
controller from that node are accepted.
24 asynReqResource56 RSC If bit 24 is set to 1b for local bus node number 56, then asynchronous requests received by the
controller from that node are accepted.
23 asynReqResource55 RSC If bit 23 is set to 1b for local bus node number 55, then asynchronous requests received by the
controller from that node are accepted.
22 asynReqResource54 RSC If bit 22 is set to 1b for local bus node number 54, then asynchronous requests received by the
controller from that node are accepted.
21 asynReqResource53 RSC If bit 21 is set to 1b for local bus node number 53, then asynchronous requests received by the
controller from that node are accepted.
20 asynReqResource52 RSC If bit 20 is set to 1b for local bus node number 52, then asynchronous requests received by the
controller from that node are accepted.
19 asynReqResource51 RSC If bit 19 is set to 1b for local bus node number 51, then asynchronous requests received by the
controller from that node are accepted.
18 asynReqResource50 RSC If bit 18 is set to 1b for local bus node number 50, then asynchronous requests received by the
controller from that node are accepted.
17 asynReqResource49 RSC If bit 17 is set to 1b for local bus node number 49, then asynchronous requests received by the
controller from that node are accepted.
Not Recommended for New Designs