HB288064MM1 Datasheet, PDF (23/79 Pages) Hitachi Semiconductor – MultiMediaCard 64 MByte

HB288064MM1
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)
Supported commands
Card command
0 1 2 3 4 7 9 10 11 12 13 15 16 17 18
class (CCC)
Class description
Class 0
basic
++++++++
+++
Class 1
stream read
+
Class 2
block read
+++
HB288064MM1 Command Classes (Class 3 to Class 8)
Card command
class (CCC) Class description
Class 3
stream write
Class 4
block write
Class 5
erase
Class 6
write protection
Class 7
lock card
Supported commands
20 24 25 26 27 28 29 30 32 33 34 35 36 37 38 42
+
++++
+++++++
+++
+
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
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