HB28E016MM2 View Datasheet(PDF) - Hitachi -> Renesas Electronics

Part Name

Description

Manufacturer

HB28E016MM2

MultiMediaCard™ 16 Mbyte/32 Mbyte/64 Mbyte/128 MByte

Hitachi -> Renesas Electronics 

HB28E016/D032/D064/B128MM2

Commands

The command set of the MultiMediaCard system is divided into classes corresponding to the type of card

(see also [1]). These Hitachi MultiMediaCards support the following command classes:

Command Classes (Class 0 to Class 2 and Class 4)

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

+++

Class 4

block write

+

Command Classes (Class 2 to Class 7)

Supported commands

Card command

20 23 24 25 26 27 28 29 30 32 33 34 35 36 37 38 42

class (CCC) Class description

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

24

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