參數(shù)資料
型號: MC4GH02GNMCA-2SA00
廠商: SAMSUNG SEMICONDUCTOR CO. LTD.
英文描述: SAMSUNG MultiMediaCard
中文描述: 三星多媒體
文件頁數(shù): 40/102頁
文件大?。?/td> 1384K
代理商: MC4GH02GNMCA-2SA00
MultiMediaCard
TM
40
Sep.22.2005
Revision 0.3
Figure 6-1 : MultiMediaCard State Diagram (Card Identification Mode)
By omitting the voltage range in the command (by setting the argument of CMD1 to 0), the host can query the card and
determine the voltage type of the card. This bus query should be used if the host is able to select a common voltage
range, or if a notification to the application of a non usable card in the bus is desired. Afterwards, the host must choose a
voltage for operation, and reissue CMD1 with this condition, sending incompatible cards into the
Inactive State
.
The busy bit in the CMD1 response can be used by a card to tell the host that it is still working on its power-up/reset pro-
cedure (e.g. downloading the register information from memory field) and is not ready yet for communication. In this case
the host must repeat CMD1 until the busy bit is cleared.
During the initialization procedure, the host is not allowed to change the operating voltage range. Such changes shall be
ignored by the card. If there is a real change in the operating conditions, the host must reset the card (using CMD0) and
restart the initialization procedure. However, for accessing cards already in
Inactive State
, a hard reset must be done by
switching the power supply off and back on.
The command GO_INACTIVE_STATE (CMD15) can be used to send an addressed card into the
Inactive State
. This com-
mand is used when the host explicitly wants to deactivate a card (e.g. host is changing V
DD
into a range which is known to
be not supported by this card).
Ready State
(ready)
CMD1
Inactive
State (ina)
Idle State
(idle)
Identification
State (ident)
CMD0
CMD3
CMD2
from all states except (ina)
from all states in
data-transfer-mode
CMD15
card looses bus
card wins bus
cards with non compatible voltage range
card is busy or
host omitted voltage range
data-transfer mode
card-identification mode
Stand-by State
(stby)
Power on
CMD40
data-transfer mode
Interrupt mode
Wait-IRQ State
(irq)
Any start bit detected on the bus
相關PDF資料
PDF描述
MC206 THIN SMD LOW/MEDIUM-FREQUENCY CRYSTAL UNIT
MC2300 Navigator Motion Processor
MC26LS30 Dual Differential Quad Single-Ended (EIA-423-A) Line Drivers
MC26LS30D CABLE GLAND, PG29
MC26LS30DR2 Dual Differential Quad Single-Ended (EIA-423-A) Line Drivers
相關代理商/技術參數(shù)
參數(shù)描述
MC4M 制造商:G & J HALL 功能描述:STEP DRILL MULTICUT 4-12MM X 2MM 制造商:G & J HALL 功能描述:STEP DRILL, MULTICUT, 4-12MM X 2MM
MC-4-MALE 制造商:Multi-Contact USA 功能描述:
MC4MANUAL 制造商:Omron Corporation 功能描述:
MC-4R128CEE6B 制造商:NEC 制造商全稱:NEC 功能描述:Direct Rambus DRAM RIMM Module 128M-BYTE 64M-WORD x 16-BIT
MC-4R128CEE6B-653 制造商:NEC 制造商全稱:NEC 功能描述:Direct Rambus DRAM RIMM Module 128M-BYTE 64M-WORD x 16-BIT