Specifications

©Copyright 2001-2013 SD Group (Panasonic, SanDisk, Toshiba) and SD Card Association
Physical Layer Simplified Specification Version 4.10
112
1) This bit is valid only when the card power up status bit is set.
2) This bit is set to LOW if the card has not finished the power up routine.
3) Only UHS-I card supports this bit.
Table 5-1: OCR Register Definition
The supported voltage range is coded as shown in Table 5-1. A voltage range is not supported if the
corresponding bit value is set to LOW. As long as the card is busy, the corresponding bit (31) is set to
LOW.
VDD Voltage Window of OCR indicates V
DD1
voltage range in case of UHS-II Card.
UHS-II Card Status bit is added in Bit 29 to indicate whether the card supports UHS-II Interface. Non
UHS-II Card sets Bit 29 to 0 and UHS-II Card sets Bit 29 to 1. This bit is not affected by whether VDD2
is supplied or not.
OCR bit position
OCR Fields Definition
0-3
reserved
4
reserved
5
reserved
6
reserved
7
Reserved for Low Voltage Range
8
reserved
9
reserved
10
reserved
11
reserved
12
reserved
13
reserved
14
reserved
15
2.7-2.8
16
2.8-2.9
17
2.9-3.0
18
3.0-3.1
19
3.1-3.2
20
3.2-3.3
21
3.3-3.4
22
3.4-3.5
23
3.5-3.6
24
3
Switching to 1.8V Accepted (S18A)
25-28
reserved
29
UHS-II Card Status
30
Card Capacity Status (CCS)
1
31
Card power up status bit (busy)
2
VDD Voltage
Window