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Figure 6-3
Sparse Address Space Reads
TLSB_BANK_NUM
<3:0>
3
2
VID
TLSB
Virtual ID
(VID) of
Commander Node
The returned quadword data for a sparse window read command is repli-
cated four times on the first data word of the CSR write to broadcast space.
Figure 6-4 shows the positions within the TLSB data word in which the
sparse read data is returned.
Figure 6-4
Sparse Window Read Data as Presented on the TLSB
256
224
:
LW 1
6-16 I/O Port
1
0
39
38
37
36
35
34
33
32
31
30
29
28
1
192
160
:
LW 0
LW 1
LW 0
Second data cycle is undefined
TLSB_ADR<39:0>
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
Byte-Aligned I/O Address
<4:3> Byte Length Field
<31:5> Byte-Aligned I/O Address <26:0>
<33:32> Space Select Field
01 = Sparse memory space
10 = Sparse I/O space
11 = Sparse configuration space
<35:34> Hose number in port being
addressed (0 - 3)
<38:36> TLSB Responder Node
0 - 4 Nodes 4 - 8 I/O window space, resp.
<39> I/O Select (always 1 for CSR transaction)
128
96
64
:
LW 1
LW 0
12
11
10
9
8
7
6
5
4
3
2
1
0
0
BXB0829.AI
CYC
32
0
:
LW 1
LW 0
1
2
BXB0819.AI
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