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參數資料
| 型號： | MC12U064DACA-2QC00 |
| 廠商： | SAMSUNG SEMICONDUCTOR CO. LTD. |
| 英文描述： | Dual Voltage MultiMediaCard Specification |
| 中文描述： | 雙電壓多媒體卡規(guī)格 |
| 文件頁數： | 29/64頁 |
| 文件大?。?/td> | 1385K |
| 代理商： | MC12U064DACA-2QC00 |
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MultiMediaCard
TM
Class
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
Class 0
Basic
Calss 1
Stream read (not supported)
Class 2
Block read
Class 3
Stream write (not supported)
Class 4
Block write
Class 5
Erase
(not supported CMD 32~34 and 37 according to
MMC system spec 3.31)
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.
The command transmission always starts with the MSB. Each command starts with a start bit and ends
with a CRC command protection field followed by an end bit. The length of each command frame is
fixed to 48 bits (2.4 us at 20 MHz):
29
相關PDF資料 |
PDF描述 |
|---|---|
| MC12U128DACA-2QC00 | Dual Voltage MultiMediaCard Specification |
| MC14024B | 7 Stage Ripple Counter(7位二進制計數器) |
| MC14029B | Binary/Decade Up/Down Counter(二/十進制 增/減計數器) |
| MC1403B | Low Voltage Reference(低電壓參考源) |
| MC1403 | Low Voltage Reference(低電壓參考源) |
相關代理商/技術參數 |
參數描述 |
|---|---|
| MC12U064HACA | 制造商:SAMSUNG 制造商全稱:Samsung semiconductor 功能描述:MultiMediaCard Specification |
| MC12U064HACA-0QC00 | 制造商:SAMSUNG 制造商全稱:Samsung semiconductor 功能描述:MultiMediaCard Specification |
| MC12U064HACB-0QC00 | 制造商:SAMSUNG 制造商全稱:Samsung semiconductor 功能描述:MultiMediaCard Specification |
| MC12U064HACC-0QC00 | 制造商:SAMSUNG 制造商全稱:Samsung semiconductor 功能描述:MultiMediaCard Specification |
| MC12U064HAFA-0QC00 | 制造商:SAMSUNG 制造商全稱:Samsung semiconductor 功能描述:MultiMediaCard Specification |
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