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7.2 Card Registers
The SD Memory Card has five registers. Refer to Table 20 to Table 25 for detail.
Table 20: SD Memory Card registers
Register
Name
Bit
Width
Description
Function
CID
OCR
128
32
Card Identification This register contains the card identification information used during the
information Card Identification phase.
Operation This register describes the operating voltage range and contains the status
Conditions Registers bit in the power supply.
CSD
SCR
RCA
128
64
16
Card specific
information
SD Memory Card’s
Special features
Relative Card
Address
This register provides information on how to access the card content. Some
fields of this register are writeable by PROGRAM_CSD (CMD27).
This register provides information on special features.
This register carries the card address is SD Memory Card mode.
Table 21: CID register
Register Name
MID
OID
PNM
Bit Width
8
16
40
Description
Manufacture ID
OEM/Application ID
Product Name
typ. value
0x5d
0x5342
“ LxBN c”
c=number of channels
PRV
8
Product Version
0x04
can change
PSN
—
MDT
CRC
—
32
4
12
7
1
Product Serial Number
Reserved
Manufacture Date
Check sum of CID contents
Not used; always=1
xxxxxxxx
0x0
0xyym
chksm
1
Table 22: OCR register
OCR bit position
VDD voltage
typ. value
OCR bit position
VDD voltage
typ. value
window
window
0-3
4
5
6
7
8
9
10
11
12
13
Reserved
1.6-1.7
1.7-1.8
1.8-1.9
1.9-2.0
2.0-2.1
2.1-2.2
2.2-2.3
2.3-2.4
2.4-2.5
2.5-2.6
0
0
0
0
0
0
0
0
0
0
0
15
16
17
18
19
20
21
22
23
24-30
30
2.7-2.8
2.8-2.9
2.9-3.0
3.0-3.1
3.1-3.2
3.2-3.3
3.3-3.4
3.4-3.5
3.5-3.6
Reserved
Card Capacity
1
1
1
1
1
1
1
1
1
*1)
Status (CCS)
14
2.6-2.7
0
31
0=busy; 1=ready
*2)
Notes
1.
2.
This bit is valid only when the card power up status bit is set.
This bit is set to LOW if the card has not finished the power up routine.
Swissbit AG
Industriestrasse 4
CH-9552 Bronschhofen
Switzerland
Swissbit reserves the right to change products or specifications without notice.
www.swissbit.com
industrial@swissbit.com
Revision: 1.30
S-200_data_sheet_SD-LxBN_Rev130
Page 15 of 24
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