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| 型號： | MC12U016NACA |
| 廠商： | SAMSUNG SEMICONDUCTOR CO. LTD. |
| 英文描述： | Shielded Paired Cable; Number of Conductors:2; Jacket Material:Polyvinylchloride (PVC); Number of Pairs:1; Leaded Process Compatible:Yes RoHS Compliant: Yes |
| 中文描述： | 多媒體卡規(guī)格 |
| 文件頁數(shù)： | 31/66頁 |
| 文件大小： | 1422K |
| 代理商： | MC12U016NACA |
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MultiMediaCard
TM
31
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):
0
1
Bit5 …. Bit0
Bit31 …. Bit0
Start bit
Host
Command
Argument
Bit6 …. Bit0 1
CRC*1
End Bit
The start bit is always ‘0’ in command frames (sent from host to MultiMediaCard). The host bit is
always ‘1’ for commands. The command field contains the binary coded command number. The
argument depends on the command (refer to Table “Basic Commands (class 0) and Table “Block-
Oriented Read Commands (class 2)”). The CRC field is defined in Chapter “Cyclic Redundancy Check
(CRC)”.
The MultiMediaCard supports the following MultiMediaCard commands :
Table 4-8 Detailed Command Description
CMD
Index
Type
Argument
Resp
CMD0
bc
[31:0] stuff bits
CMD1
bcr
[31:0] OCR
without busy
Abbreviation
GO_IDLE_STATE
SEND_OP_COND
Command description
Resets all card to Idle State
Checks for cards not supporting the full
range of 2.0V to 3.6V. After receiving CMD1
the card sends an R3 response (refer to
Chapter “Responses”).
Asks all cards in ready state to send their
CID
*1
numbers
on CMD-line
Assigns relative address to the card in
identification state.
Programs the DSR of all cards in stand-by
state.
These Samsung MultiMediaCard do not
support this command
Command toggles a card between the
standby and transfer states or between the
programming and disconnect state. In both
cases the card is selected by its own
relative address while deselecting the prior
selected card. Address 0 deselects all.
R3
CMD2
bcr
[31:0] stuff bits R2
ALL_SEND_CID
CMD3
ac
[31:16] RCA
[15:0] stuff bits
[31:16] DSR
[15:0] stuff bits
R1
SET_RELATIVE_A
DDR
SET_DSR
CMD4
bc
CMD7
ac
[31:16] RCA
[15:0] stuff bits
R1 (only
the
select
ed
card)
SELECT/
DESELECT_CARD
CMD8
CMD9
reserved
ac
[31:16] RCA
R2
SEND_CSD
Asks the addressed card to send its card-
相關PDF資料 |
PDF描述 |
|---|---|
| MC12U032HACA | CABLE, 9505, 5PAIR, 30.5M; Cores, No. of:10; Conductor make-up:7/32AWG; Area, conductor CSA:0.2mm2; Diameter, External:7.34mm; Material, secondary insulation:PVC; Length, Reel (Imperial):100ft; Colour, secondary insulation:Chrome; RoHS Compliant: Yes |
| MC12U032NACA | Shielded Paired Cable; Number of Conductors:10; Conductor Size AWG:24; No. Strands x Strand Size:7 x 32; Jacket Material:Polyvinylchloride (PVC); Number of Pairs:5; Impedance:75ohm; Leaded Process Compatible:Yes; Voltage Nom.:300V RoHS Compliant: Yes |
| MC12U064HACA | Shielded Paired Cable; Number of Conductors:10; Conductor Size AWG:24; No. Strands x Strand Size:7 x 32; Jacket Material:Polyvinylchloride (PVC); Number of Pairs:5; Impedance:75ohm; Leaded Process Compatible:Yes; Voltage Nom.:300V RoHS Compliant: Yes |
| MC12U064NACA | CABLE, 9506, 6PAIR, PER M; Cores, No. of:12; Conductor make-up:7/32AWG; Area, conductor CSA:0.2mm2; Diameter, External:7.34mm; Material, secondary insulation:PVC; Colour, secondary insulation:Chrome; Alpha type number:5476C RoHS Compliant: Yes |
| MC1DU032HACA | MultiMediaCard Specification |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| MC12U016NACA-0QC00 | 制造商:SAMSUNG 制造商全稱:Samsung semiconductor 功能描述:MultiMediaCard Specification |
| MC12U016NACB-0QC00 | 制造商:SAMSUNG 制造商全稱:Samsung semiconductor 功能描述:MultiMediaCard Specification |
| MC12U016NACC-0QC00 | 制造商:SAMSUNG 制造商全稱:Samsung semiconductor 功能描述:MultiMediaCard Specification |
| MC12U016NAFA-0QC00 | 制造商:SAMSUNG 制造商全稱:Samsung semiconductor 功能描述:MultiMediaCard Specification |
| MC12U016NAFB-0QC00 | 制造商:SAMSUNG 制造商全稱:Samsung semiconductor 功能描述:MultiMediaCard Specification |
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