hb288064mm1 Renesas Electronics Corporation., hb288064mm1 Datasheet - Page 58

• Manufacturer Part Number: hb288064mm1
• Description: Multimediacard 64 Mbyte
• Manufacturer: Renesas Electronics Corporation.

HB288064MM1
Responses
There are several types of response tokens. As in the MultiMediaCard mode, all are transmitted MSB first:
This response token is sent by the card after every command with the exception of SEND_STATUS
commands. It is one byte long, and the MSB is always set to zero. The other bits are error indications, an
error being signaled by a ‘1’. The structure of the R1 format is given in Figure “R1 Response Format”.
The meaning of the flags is defined as following:
This response token is identical to the R1 format with the optional addition of the busy signal. The busy
signal token can be any number of bytes. A zero value indicates card is busy. A non-zero value indicates
the card is ready for the next command.
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Format R1
Format R1b
In idle state: The card is in idle state and running the initializing process.
Erase reset: An erase sequence was cleared before executing because an out of erase sequence
command was received.
Illegal command: An illegal command code was detected.
Communication CRC error: The CRC check of the last command failed.
Erase sequence error: An error in the sequence of erase commands occurred.
Address error: A misaligned address, which did not match the block length, was used in the
command.
Parameter error: The command’s argument (e.g. address, block length) was out of the allowed
range for this card.
0
7
R1 Response Format
0
in idle state
erase reset
illegal command
com crc error
erase sequence error
address error
parameter error