MC56U032NCFA Samsung Semiconductor, Inc., MC56U032NCFA Datasheet - Page 30

• Manufacturer Part Number: MC56U032NCFA
• Description: Flash Card
• Manufacturer: Samsung Semiconductor, Inc.

4.6.1 Commands
4.6 MultiMediaCard Communication
MultiMediaCard
The command set of the MultiMediaCard system is divided into classes corresponding to the type of
card. The MultiMediaCard supports the following command classes:
Table 4-8 Command Classes
All communication between host and cards is controlled by the host (master). The host sends
commands and, depending on the command, receives a corresponding response from the selected
card. In this chapter the commands to control the MultiMediaCard, the card responses and the
contents of the status and error field included in the responses, are defined.
Class
Class 0
Calss 1
Class 2
Class 3
Class 4
Class 5
Class 6
Class 7
TM
Command
0
1
2
3
4
7
9
10
12
13
15
11
16
17
18
20
24
25
26
27
32
33
34
35
36
37
38
28
29
30
42
Class Description
Basic
Stream read (not supported)
Block read
Stream write (not supported)
Block write
Erase
(not supported CMD 32~34 and 37 according to
MMC system spec 3.31)
Write protection
Lock card
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