hb28d032bp2 Renesas Electronics Corporation., hb28d032bp2 Datasheet - Page 15

• Manufacturer Part Number: hb28d032bp2
• Description: Mobile Embedded Flash With Multimediacard-tm Interface 16 Mbyte/32 Mbyte
• Manufacturer: Renesas Electronics Corporation.

The following table defines the maximum data transfer rate TRAN_SPEED:
Maximum Data Transfer Rate Definition
TRAN_SPEED bit
2:0
6:3
7
These Hitachi Mobile Embedded Flashes support a transfer rate between 0 and 20 Mbit/s. The parameter
TRAN_SPEED is 0x2A.
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
These Hitachi Mobile Embedded Flashes support the command classes 0, 1, 2, 3, 4, 5, 6 and 7. The
parameter CCC is permanently assigned to the value 0x0FF.
TRAN_SPEED
CCC
Description
transfer rate exponent
time mantissa
reserved
Supported card command classes
class0
class1
......
class11
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’
HB28E016/D032BP2
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