PCI4410 Datasheet, PDF (159/201 Pages) Texas Instruments – PC Card and OHCI Controller

9.2 GUID ROM Register
This register is used to access the serial ROM and is only applicable if the GUID_ROM bits are set to 1. See Table 9–3
for a complete description of the register contents.
Bit
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
Name
GUID ROM
Type
RSU R
R
R
R
R RSU R RU RU RU RU RU RU RU RU
Default 0
0
0
0
0
0
0
0
X
X
X
X
X
X
X
X
Xit
15 14 13 12 11 10
9
8
7
6
5
4
3
2
1
0
Name
GUID ROM
Type
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
Default 0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Register:
Type:
Offset:
Default:
GUID ROM
Read-only, Read/Set/Update, Read/Update
04h
00XX 0000h
Table 9–3. GUID ROM Register
BIT
31
30–26
25
24
23–16
15–0
SIGNAL
ADDRRESET
RSVD
RDSTART
RSVD
RDDATA
RSVD
TYPE
RSU
R
RSU
R
RU
R
FUNCTION
Software sets this bit to 1 to reset the GUID ROM address to 0. When the PCI4410 completes the reset, it
clears this bit. The PCI4410 does not automatically fill bits 23–16 (RDDATA field) with the 0th byte.
Reserved. Bits 30–26 return 0s when read.
A read of the currently addressed byte is started when this bit is set to 1. This bit is automatically cleared
when the PCI4410 completes the read of the currently addressed GUID ROM byte.
Reserved. Bit 24 returns 0 when read.
This field represents the data read from the GUID ROM.
Reserved. Bits 15–0 return 0s when read.
9–5