hb28d032bp2 Renesas Electronics Corporation., hb28d032bp2 Datasheet - Page 57

• Manufacturer Part Number: hb28d032bp2
• Description: Mobile Embedded Flash With Multimediacard-tm Interface 16 Mbyte/32 Mbyte
• Manufacturer: Renesas Electronics Corporation.

After a data block has been received, the card will respond with a data-response token. If the data block
has been received without errors, it will be programmed. As long as the card is busy programming, a
continuous stream of busy tokens will be sent to the host (effectively holding the DataOut line low).
In Multiple Block write operation the stop transmission will be done by sending ‘Stop Tran’ token instead
of ‘Start Block’ token at the beginning of the next block.
Two types of multiple block write transactions, identical to the multiple block read, are defined (the host
can use either one at any time):
The host can abort writing at any time, within a multiple block operation, regardless of the its type.
Transaction abort is done by sending the ‘Stop Tran’ token. If a multiple block write with pre-defined block
count is aborted, the data in the remaining blocks is not defined.
If the card detects a CRC error or a programming error (e.g. write protect violation, out of range, address
misalignment, internal error, etc.) during a multiple block write operation (both types) it will report the
Data in
Data out
Data in
Data out
to card
• Open-ended Multiple block write
The number of blocks for the write multiple block operation is not defined. The card will
continuously accept and program data blocks until a ‘Stop Tran’ token is received.
• Multiple block write with pre-defined block count
The card will accept the requested number of data blocks and terminate the transaction. ‘Stop
tran’ token is not required at the end of this type of multiple block write, unless terminated with
an error. In order to start a multiple block write with pre-defined block count the host must use
the SET_BLOCK_COUNT command (CMD23) immediately preceding the
WRITE_MULTIPLE_BLOCK (CMD25) command. Otherwise the card will start an open-
ended multiple block write which can be stopped using the ‘Stop Tran’ token.
from
host
command
to card
from
host
command
response
to host
from
card
response
Multiple Block Write Operation
Single Block Write Operation
to host
Block
block
Start
data
to host
from
card
response
data block
data from
to card
data
host
data from
to card
host
response and
busy
busy from
data
card
data_response busy
block
data
response and
busy from
data from
to card
host
data
card
response
HB28E016/D032BP2
data
new command
from host
Token
Stop
Tran
busy
command
busy
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