HB28K032MM3 Datasheet, PDF (14/91 Pages) Renesas Technology Corp – MultiMediaCard 32 MByte/64 MByte/128 MByte/256 MByte/512 MByte

HB28K032/L064/J128/J256/J512MM3, HB28K032/L064/J128/J256RM3
• TRAN_SPEED
The following table defines the maximum data transfer rate TRAN_SPEED:
Maximum Data Transfer Rate Definition
TRAN_SPEED bit
2:0
Description
Transfer rate exponent
6:3
Time mantissa
7
Reserved
Values
0 = 100 Kbit/s, 1 = 1 Mbit/s, 2 = 10
Mbit/s, 3 = 100 Mbit/s, 4...7 =
reserved
0x0 = reserved, 0x1 = 1.0, 0x2 = 1.2,
0x3 = 1.3, 0x4 = 1.5, 0x5 = 2.0, 0x6
= 2.5, 0x7 = 3.0, 0x8 = 3.5, 0x9 =
4.0, 0xA = 4.5, 0xB = 5.0, 0xC = 5.5,
0xD = 6.0, 0xE = 7.0, 0xF = 8.0
Always ‘0’
These Renesas MultiMediaCards support a transfer rate between 0 and 20 Mbit/s. The parameter
TRAN_SPEED is 0x2A.
• CCC
The MultiMediaCard command set is divided into subsets (command classes). The card command class
register CCC defines which command classes are supported by this card. A set CCC bit means that the
corresponding command class is supported. For command class definition refer to Table “Command
Classes”.
Supported Card Command Classes
CCC bit
0
1
......
11
Supported card command classes
class0
class1
......
class11
These Renesas MultiMediaCards support the command classes 0, 1, 2, 3, 4, 5, 6 and 7. The parameter
CCC is permanently assigned to the value 0x0FF.
Rev.0.02, Sep.15.2004, page 14 of 89