參數(shù)資料
型號： HB28J512MM3
廠商： Renesas Technology Corp.
英文描述： MultiMediaCard 32 MByte/64 MByte/128 MByte/256 MByte/512 MByte
中文描述： 多媒體32 MByte/64 MByte/128 MByte/256 MByte/512字節(jié)
文件頁數(shù)： 25/91頁
文件大?。?/td> 526K
代理商： HB28J512MM3
HB28K032/L064/J128/J256/J512MM3, HB28K032/L064/J128/J256RM3
Rev.0.02, Sep.15.2004, page 25 of 89
Commands
The command set of the MultiMediaCard system is divided into classes corresponding to the type of card
(see also [1]). These Renesas MultiMediaCards support the following command classes:
Command Classes
(class 0 to class 2)
Supported commands
Card command
class (CCC)
Class description
0
1
2
3
4
7
9
10 11 12 13 15 16 17 18
class 0
basic
+
+
+
+
+
+
+
+
+
+
+
class 1
stream read
+
class 2
block read
+
+
+
Command Classes
(class 2 to class 7)
Supported commands
Card command
class (CCC)
Class description
20 23 24 25 26 27 28 29 30 32 33 34 35 36 37 38 42
class 2
block read
+
class 3
stream write
+
class 4
block write
+
+
+
+
+
class 5
erase
+
+
+
class 6
write protection
+
+
+
class 7
lock card
+
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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