TSB12LV26 Datasheet, PDF (68/91 Pages) Texas Instruments – OHCI-Lynx PCI-BASED IEEE 1394 HOST CONTROLLER

4.33 Asynchronous Request Filter Low Register
The asynchronous request filter low set/clear register is used to enable 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 4–24 for a complete description of the register contents.
Bit
Name
Type
Default
Bit
Name
Type
Default
31
RSC
0
15
RSC
0
30
RSC
0
14
RSC
0
29
RSC
0
13
RSC
0
28
RSC
0
12
RSC
0
27
RSC
0
11
RSC
0
26 25 24 23 22 21
Asynchronous request filter low
RSC RSC RSC RSC RSC RSC
0
0
0
0
0
0
10
9
8
7
6
5
Asynchronous request filter low
RSC RSC RSC RSC RSC RSC
0
0
0
0
0
0
20
RSC
0
4
RSC
0
19
RSC
0
3
RSC
0
18
RSC
0
2
RSC
0
17
RSC
0
1
RSC
0
16
RSC
0
0
RSC
0
Register:
Type:
Offset:
Default:
Asynchronous request filter low
Read/Set/Clear
108h set register
10Ch clear register
0000 0000h
Table 4–24. Asynchronous Request Filter Low Register Description
BIT
FIELD NAME
TYPE
DESCRIPTION
31
asynReqResource31
RSC
If this bit is set for local bus node number 31, then asynchronous requests received by the
TSB12LV26 from that node are accepted.
30
asynReqResource30
RSC
If this bit is set for local bus node number 30, then asynchronous requests received by the
TSB12LV26 from that node are accepted.
L
L
L
Bits 29 through 2 follow the same pattern.
If this bit is set for local bus node number 1, then asynchronous requests received by the
1
asynReqResource1 RSC _{TSB12LV26 from that node are accepted.}
0
asynReqResource0
RSC
If this bit is set for local bus node number 0, then asynchronous requests received by the
TSB12LV26 from that node are accepted.
4–30