Texas Instruments XIO2213B Evaluation Module / Reference Design XIO2213BEVM XIO2213BEVM Datenbogen
Produktcode
XIO2213BEVM
SCPS210F – OCTOBER 2008 – REVISED MAY 2013
8.2
GUID ROM Register
The GUID ROM register accesses the serial EEPROM, and is only applicable if bit 24 (GUID_ROM) in the
OHCI version register at OHCI offset 00h (see
OHCI version register at OHCI offset 00h (see
) is set to 1b. See
for a complete
description of the register contents.
OHCI register offset:
04h
Register type:
Read/Set/Update, Read/Update, Read only
Default value:
00XX 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
X
X
X
X
X
X
X
X
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 8-3. GUID ROM Register Description
BIT
FIELD NAME
TYPE
DESCRIPTION
31
addrReset
RSU
Software sets bit 31 to 1b to reset the GUID ROM address to 0. When the controller
completes the reset, it clears this bit. The controller does not automatically fill bits 23-16
(rdData field) with the 0 byte.
completes the reset, it clears this bit. The controller does not automatically fill bits 23-16
(rdData field) with the 0 byte.
30-26
RSVD
R
Reserved. Bits 30-26 return 00 0000b when read.
25
rdStart
RSU
A read of the currently addressed byte is started when bit 25 is set to 1b. This bit is
automatically cleared when the controller completes the read of the currently addressed
GUID ROM byte.
automatically cleared when the controller completes the read of the currently addressed
GUID ROM byte.
24
RSVD
R
Reserved. Bit 24 returns 0b when read.
23-16
rdData
RU
This field contains the data read from the GUID ROM.
15-8
RSVD
R
Reserved. Bits 15-8 return 00h when read.
7-0
miniROM
R
The miniROM field defaults to 00h indicating that no miniROM is implemented. If an
EEPROM is implemented, all eight bits of this miniROM field are downloaded from
EEPROM word offset 28h. For this device, the miniROM field must be greater than 39h to
indicate a valid miniROM offset into the EEPROM.
EEPROM is implemented, all eight bits of this miniROM field are downloaded from
EEPROM word offset 28h. For this device, the miniROM field must be greater than 39h to
indicate a valid miniROM offset into the EEPROM.
Copyright © 2008–2013, Texas Instruments Incorporated
1394 OHCI Memory-Mapped Register Space
135
Product Folder Links: