HB28K032MM3 Datasheet, PDF (67/91 Pages) Renesas Technology Corp – MultiMediaCard 32 MByte/64 MByte/128 MByte/256 MByte/512 MByte

HB28K032/L064/J128/J256/J512MM3, HB28K032/L064/J128/J256RM3
Data Tokens
Read and write commands have data transfers associated with them. Data is being transmitted or received
via data tokens. All data bytes are transmitted MSB first. Data tokens are 4 to 2051 bytes long and have
the following format:
• First byte: Start Byte
Format of the Start Data Block Tokens
Token Type
Start Block
Start Block
Start Block
Start Block
Stop Tran
Transaction Type
Single Block Read
Multiple Block Read
Single Block Write
Multiple Block Write
Multiple Block Write
7
Bit Position
0
11111110
11111110
11111110
11111100
11111101
• Bytes 2-2049 (depends on the data block length): User data
• Last two bytes: 16-bit CRC.
Data Error Token
If a read operation fails and the card cannot provide the required data, it will send a data error token
instead. This token is one byte long and has the following format:
7
000
0
Error
CC Error
Card ECC failed
out of range
Card is locked
Data Error Token
The 4 least significant bits (LSB) are the same error bits as in the response format R2.
Rev.0.02, Sep.15.2004, page 67 of 89