HB288016MM1 Просмотр технического описания (PDF) - Hitachi -> Renesas Electronics

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HB288016MM1

MultiMediaCard™ 16 MByte

Hitachi -> Renesas Electronics 

HB288016MM1

• TRAN_SPEED

The following table defines the maximum data transfer rate TRAN_SPEED:

Maximum Data Transfer Rate Definition

TRAN_SPEED bit

2:0

6:3

7

Description

transfer rate exponent 0 = 100 kbit/s, 1 = 1 Mbit/s, 2 = 10 Mbit/s, 3 = 100

Mbit/s, 4...7 = reserved

time 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

reserved = ’0’

The HB288016MM1 supports 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 “HB288016MM1

Command Classes”.

Supported Card Command Classes

CCC bit

0

1

......

11

Supported card command classes

class0

class1

......

class11

The HB288016MM1 supports the command classes 0, 1, 2, 3, 4, 5, 6 and 7. The parameter CCC is

permanently assigned to the value 0x0FF.

13

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