Multimedia Card Registers
18.5.1.29 SD_REV Register (offset = 2FCh) [reset = 31010000h]
SD_REV is shown in
and described in
.
This register contains the hard coded RTL vendor revision number, the version number of SD specification
compliancy and a slot status bit. SD_REV[31:16] = Host Controller Version. SD_REV[15:0] = Slot Interrupt
Status.
Figure 18-65. SD_REV Register
31
30
29
28
27
26
25
24
VREV
R-31h
23
22
21
20
19
18
17
16
SREV
R-01h
15
14
13
12
11
10
9
8
Reserved
R-0h
7
6
5
4
3
2
1
0
Reserved
SIS
R-0h
R-0h
LEGEND: R/W = Read/Write; R = Read only; W1toCl = Write 1 to clear bit; -n = value after reset
Table 18-48. SD_REV Register Field Descriptions
Bit
Field
Type
Reset
Description
31-24
VREV
R
31h
Vendor Version Number.
Bits
[7:4] is the major revision, bits
[3:0] is the minor revision.
Examples: 10h for 1.0 21h for 2.1
23-16
SREV
R
01h
Specification Version Number.
This status indicates the Standard SD Host Controller Specification
Version.
The upper and lower
4-bits indicate the version.
0x0 = SD Host Specification Version 1.0
15-1
Reserved
R
0h
0
SIS
R
0h
Slot Interrupt Status.
This status bit indicates the inverted state of interrupt signal for the
module.
By a power on reset or by setting a software reset for all
(SD_SYSCTL[24] SRA), the interrupt signal shall be deasserted and
this status shall read 0.
3445
SPRUH73H – October 2011 – Revised April 2013
Multimedia Card (MMC)
Copyright © 2011–2013, Texas Instruments Incorporated