HB288032MM1 Datasheet, PDF (26/80 Pages) Hitachi Semiconductor – MultiMediaCard 32 MByte

HB288032MM1
Basic Commands (class 0) and Read Stream Command (class 1)
CMD
index Type Argument
Resp Abbreviation
Command description
CMD0 bc [31:0] stuff bits —
GO_IDLE_STATE resets all cards to Idle State
CMD1 bcr [31:0] OCR
R3
without busy
SEND_OP_COND
checks for cards not supporting the full
range of 2.0 V to 3.6 V. After receiving
CMD1 the card sends an R3 response
(refer to Chapter “Responses”).
CMD2 bcr [31:0] stuff bits R2
ALL_SEND_CID
asks all cards in ready state to send
their CID*¹ numbers on CMD-line
CMD3 ac
[31:16] RCA
R1
[15:0] stuff bits
SET_RELATIVE_A assigns relative address to the card in
DDR
identification state.
CMD4 bc
[31:16] DSR
—
[15:0] stuff bits
SET_DSR
programs the DSR of all cards in
stand-by state.
CMD7 ac
[31:16] RCA
[15:0] stuff bits
R1 (only
the
selected
card)
SELECT/
command toggles a card between the
DESELECT_CARD standby and transfer states or between
the programming and disconnect state.
In both cases the card is selected by
its own relative address while
deselecting the prior selected card.
Address 0 deselects all.
CMD9 ac
[31:16] RCA
R2
[15:0] stuff bits
SEND_CSD
asks the addressed card to send its
card-specific data (CSD)*² on CMD-
line.
CMD10 ac
[31:16] RCA
R2
[15:0] stuff bits
SEND_CID
asks the addressed card to send its
card identification (CID) on CMD- line.
CMD11 adtc [31:0] data
R1
READ_DAT_UNTIL reads data stream from the card,
address
_STOP
starting at the given address, until a
STOP_TRANSMISSION follows.
CMD12 ac [31:0] stuff bits R1b*³
STOP_TRANSMIS forces the card to stop transmission
SION
CMD13 ac
[31:16] RCA
R1
[15:0] stuff bits
SEND_STATUS
Asks the addressed card to send its
status register.
CMD15 ac
[31:16] RCA
—
[15:0] stuff bits
GO_INACTIVE_ST Sets the card to inactive state in order
ATE
to protect the card stack against
communications breakdowns.
Notes: 1. CID register consists of 128 bits (starting with MSB, it is preceded by an additional start bit, ends
with an end bit)
2. CSD register consists of 128 bits (starting with MSB, it is preceded by an additional start bit,
ends with an end bit)
3. This command is indicating the busy status of the MultiMediaCard via the data channel.
26