hb288032mm1 Renesas Electronics Corporation., hb288032mm1 Datasheet - Page 48
hb288032mm1
Manufacturer Part Number
hb288032mm1
Description
Multimediacard 32 Mbyte - Hitachi Semiconductor
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.HB288032MM1.pdf
(80 pages)
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HB288032MM1
The data transfer starts N
received. The bus transaction is identical to that of a write block command (see Figure “Timing of The
Block Write Command”). As the data transfer is not block-oriented, the data stream does not include the
CRC checksum. Consequently the host can not receive any CRC status information from the card. The
data stream is terminated by a stop command. The bus transaction is identical to the write block option
when a data block is interrupted by the stop command (see Figure “Stop Transmission During Data
Transfer From The Host”).
CMD
The host must first tag the sector to erase. The tagged sector(s) are erased in parallel by using the CMD32-
CMD38. The card busy signalling is also used for the indication of the card erase procedure duration. In
this case the end of the card busy signalling also does mean that the erase of all tagged sectors has been
finished. The host can (also) request the card to send the actual card state using the CMD13.
48
DAT
Stream write
Erase block timing
S T
D D D D D D D D D D
L ... pull down to LOW bit
CMD
CMD
DAT
DAT
Host command
content
L
T
Z Z * * * * * * * * * * * Z Z Z S L L * * * * * * * * * * * * * * * * * * * * L E
Card active
* * * * *
Stop Transmission During Data Transfer From The Host
CRC E Z Z P
WR
content
Host active
clock cycles after the card response to the sequential write command was
L E
E Z Z S L
N
Z
CR
CRC
Timing of Erase Operation
S T
* * * * * * * *
cycles
* * *
E
N
Host command
CR
content
Host active
P
* * * * * * * * * * * * * * * * * *
Card is programming
S T
S T
Card response
Card response
content
content
CRC E
card is erasing
Card active
card busy
CRC E
CRC E
E Z Z Z Z Z Z Z Z
S T
Host command
content
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