參數(shù)資料
型號: HB28D064MM2
廠商: Hitachi,Ltd.
英文描述: MultiMediaCard 16 Mbyte/32 Mbyte/64 Mbyte/128 MByte
中文描述: 多媒體16 Mbyte/32 Mbyte/64 Mbyte/128字節(jié)
文件頁數(shù): 14/88頁
文件大?。?/td> 329K
代理商: HB28D064MM2
HB28E016/D032/D064/B128MM2
14
TRAN_SPEED
The following table defines the maximum data transfer rate TRAN_SPEED:
Maximum Data Transfer Rate Definition
TRAN_SPEED bit
Description
Values
2:0
ransfer rate exponent
0 = 100 kbit/s, 1 = 1 Mbit/s, 2 = 10
Mbit/s, 3 = 100 Mbit/s, 4...7 =
reserved
6:3
ime mantissa
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
7
reserved
always
0
These Hitachi 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
Supported card command classes
0
class0
1
class1
.....
.....
11
class11
These Hitachi MultiMediaCards support the command classes 0, 1, 2, 3, 4, 5, 6 and 7. The parameter CCC
is permanently assigned to the value 0x0FF.
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