
SD Host Controller Programming Model
227
September 2005
SCPS110
Table 1216. Subsystem Access Register Description
BIT
FIELD NAME
TYPE
DESCRIPTION
3116
SubsystemID
RW
Subsystem device ID. The value written to this field is aliased to the subsystem ID register at
PCI offset 2Eh.
150
SubsystemVendorID
RW
Subsystem vendor ID. The value written to this field is aliased to the subsystem vendor ID
register at PCI offset 2Ch.
12.24 Diagnostic Register
This register enables the diagnostic modes. See Table 1217 for a complete description of the register
contents. All bits in this register are reset by GRST only.
Function 3 register offset: 90h
Register type:
Read-only, Read/Write
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
BIT NUMBER
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
RESET STATE
0
Table 1217. Diagnostic Register Description
BIT
SIGNAL
TYPE
FUNCTION
3117
RSVD
R
Reserved. Bits 3117 return 000 0000 0000 0000b when read.
16
DIAGNOSTIC
RW
Diagnostic test bit. This test bit shortens the card detect debounce times for simulation and TDL.
150
RSVD
R
Reserved. Bits 150 return 0000h when read.
12.25 Slot 0 3.3-V Maximum Current Register
This register is a read/write register and the contents of this register are aliased to the 3_3_MAX_CURRENT
field in the slot 0 maximum current capabilities register at offset 48h in the SD host standard registers. This
register is a GRST only register.
Function 3 register offset: 94h
Register type:
Read/Write
Default value:
0000h
BIT NUMBER
7
6
5
4
3
2
1
0
RESET STATE
0