S-12097 Datasheet, PDF (7/18 Pages) List of Unclassifed Manufacturers – Micro-SD 3.0 Memory Card

Micro-SD 3.0 Memory Card Spec. v1.1
(PS8035)
(1) S: power supply, I:input; O:output using push-pull drivers; PP:I/O using push-pull drivers
(2) The extended DAT lines(DAT1-DAT3)are input on power up. They start to operate as DAT lines
after SET_BUS_WIDTH command. The Host shall keep its own DAT1-DAT3 lines in input mode,
as well, while they are not used. It is defined so, in order to keep compatibility to MultiMedia
Cards.
(3) At power up this line has a 50KOhm pull up enabled in the card. This resistor serves two functions
Card detection and Mode Selection. For Mode Selection, the host can drive the line high or let it
be pulled high to select SD mode. If the host wants to select SPI mode it should drive the line low.
For Card detection, the host detects that the line is pulled high. This pull-up should be
disconnected by the user during regular data transfer period , with
SET_CLR_CARD_DETECT(ACMD42) command.
Name
CID
RCA1
DSR
CSD
SCR
OCR
SSR
OCR
Width
128bit
16bit
16bit
128bit
64bit
32bit
512bit
32bit
Description
Card identification number; card individual number for identification.
Mandatory
Relative card address; local system address of a card, dynamically
suggested by the card and approved by the host during initialization.
Mandatory
Driver Stage Register; to configure the card’s output drivers.
Optional
Card Specific Data; information about the card operation conditions.
Mandatory
SD Configuration Register; information about the SD Memory Card's
Special Features capabilities Mandatory
Operation conditions register. Mandatory.
SD Status; information about the card proprietary features
Mandatory
Card Status; information about the card status
Mandatory
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DCC. No. : S-12097