SDMJ-32 SanDisk, SDMJ-32 Datasheet - Page 24

• Manufacturer Part Number: SDMJ-32
• Manufacturer: SanDisk
• Type: MultiMedia Cardr

Specifications of SDMJ-32

• Density: 32MByte
• Operating Supply Voltage (typ): 3.3V
• Operating Temperature (min): -25C
• Operating Temperature (max): 85C
• Package Type: MMC
• Mounting: Socket
• Pin Count: 7
• Operating Temperature Classification: Commercial
• Operating Supply Voltage (min): 2.7V
• Operating Supply Voltage (max): 3.6V
• Programmable: Yes
• Lead Free Status / RoHS Status: Compliant

Revision 1.3
© 2005 SanDisk Corporation
3.5.1
3.5.2
3.5
MultiMediaCard/RS-MultiMediaCard Registers
Operating Conditions Register
Card Identification Register
Manufacturer ID (MID)
There is a set of six registers within the card interface. The OCR, CID, and CSD registers
carry the card configuration information. The RCA register holds the card relative
communication address for the current session.
The 32-bit Operation Conditions Register (OCR) stores the V
MultiMediaCard/RS-MultiMediaCard. In addition, this register includes a status
information bit. This status bit is set if the card power-up procedure has been finished. All
cards will implement the OCR Register.
The supported voltage range is coded as shown in Table 3-8, for high voltage and low
voltage MultiMediaCards and RS-MultiMediaCards. As long as the card is busy, the
corresponding bit (31) is set to low, the ‘wired-and’ operation yields low if at least one card
is still busy.
Table 3-8
The Card Identification Register (CID) is 16 bytes long and contains a unique card
identification number as shown in Table 3-9. It is programmed during card manufacturing
and cannot be changed by MultiMediaCard/RS-MultiMediaCard hosts.
Table 3-9
OCR Bit
23:15
30:24
14:8
6:0
31
7
Name
Reserved
1.65 - 1.95
2.0 - 2.6
2.7 - 3.6
Reserved
Card power-up status bit (busy)
Operating Conditions Register
CID Register Fields
VDD Voltage Window
Binary
Type
Width
3-9
8
MultiMediaCard and RS-MultiMediaCard Product Manual
[127:120]
Slice
CID-
0000000b
0b
0000000b
111111111b
0000000b
0x02
High Voltage MultiMediaCard
CID Value
Chapter 3 –Interface Description
DD
voltage profile of the
Manufacturer
IDs are
controlled
and assigned
by the MMC
Association
Comments
07/15/05