hb28d064mm2 Renesas Electronics Corporation., hb28d064mm2 Datasheet - Page 66

• Manufacturer Part Number: hb28d064mm2
• Description: Multimediacard 16 Mbyte/32 Mbyte/64 Mbyte/128 Mbyte
• Manufacturer: Renesas Electronics Corporation.

HB28E016/D032/D064/B128MM2
This response token is sent by the card when a READ_OCR command is received. The response length is
5 bytes (refer to Figure “R3 Response Format”). The structure of the first (MSB) byte is identical to
response type R1. The other four bytes contain the OCR register.
Every data block written to the card will be acknowledged by a data response token. It is one byte long and
has the following format:
The meaning of the status bits is defined as follows:
“010” - Data accepted.
“101” - Data rejected due to a CRC error.
“110” - Data rejected due to a Write error.
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:
Token Type
Start Block
Start Block
Start Block
Start Block
Stop Tran
66
Format R3
Data Response
First byte: Start Byte
Bytes 2-2049 (depends on the data block length): User data
Last two bytes: 16-bit CRC.
Transaction Type
Single Block Read
Multiple Block Read
Single Block Write
Multiple Block Write
Multiple Block Write
39
0
Format of the Start Data Block Tokens
R1
7
R3 Response Format
Data Response
32
0
31
status
1
1
1
1
1
7
1
1
1
1
1
OCR
0
1
1
1
1
1
1
Bit Position
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
0
0
0
0
0
1
0