Preliminary
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Registers
9.4.32 Versions Register (SD_REV)
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
The versions register (SD_REV) is shown in
and described in
Figure 9-60. Versions Register (SD_REV)
31
24 23
16 15
1
0
VREV
SREV
Reserved
SIS
R-x
R-0
R-0
R-0
LEGENDR/W = Read/Write; R = Read only; -n = value after reset
Table 9-42. Versions Register (SD_REV) Field Descriptions
Bit
Field
Value
Description
31-24
VREV
0
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
Specification Version Number. This status indicates the Standard SD Host Controller
Specification Version. The upper and lower 4-bits indicate the version.
Read 0
SD Host Specification Version 1.0
15-1
Reserved
0
Reserved bit field. Do not write any value.
0
SIS
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.
1009
SPRUGX9 – 15 April 2011
Secure Digital (SD)/—Secure Digital I/O (SDIO) Card Interface
© 2011, Texas Instruments Incorporated
Содержание TMS320C6A816 Series
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