hb288064mm1 Renesas Electronics Corporation., hb288064mm1 Datasheet - Page 23

• Manufacturer Part Number: hb288064mm1
• Description: Multimediacard 64 Mbyte
• Manufacturer: Renesas Electronics Corporation.

Commands
The command set of the MultiMediaCard system is divided into classes corresponding to the type of card
(see also [1]). The HB288064MM1 supports the following command classes:
HB288064MM1 Command Classes (Class 0 to Class 2)
Card command
class (CCC)
Class 0
Class 1
Class 2
HB288064MM1 Command Classes (Class 3 to Class 8)
Card command
class (CCC)
Class 3
Class 4
Class 5
Class 6
Class 7
Class 0 is mandatory and supported by all cards. It represents the card identification and initialization
commands, which are intended to handle different cards and card types on the same bus lines. The Card
Command Class (CCC) is coded in the card specific data register of each card, so that the host knows how
to access the card. There are four kinds of commands defined on the MultiMediaCard bus:
broadcast commands (bc) sent on CMD line, no response
broadcast commands with response (bcr) sent on CMD line, response (all cards simultaneously) on
CMD line
addressed (point-to-point) commands (ac) sent on CMD line, response on CMD line
addressed (point-to-point) data transfer commands (adtc) sent on CMD line, response on CMD line,
data transfer on DAT line
Class description
stream write
block write
erase
write protection
lock card
Class description
basic
stream read
block read
Supported commands
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Supported commands
0
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1
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2
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3
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4
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7
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9
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HB288064MM1
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