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參數(shù)資料
型號(hào)： MC28U128HACA-0QC00
廠商： SAMSUNG SEMICONDUCTOR CO. LTD.
英文描述： MultiMediaCard Specification
中文描述： 多媒體卡規(guī)格
文件頁(yè)數(shù)： 18/66頁(yè)
文件大小： 1422K
代理商： MC28U128HACA-0QC00
MultiMediaCard
TM
18
4.2 Pin Assignments in SPI Mode
Table 4- 2 SPI Pad Definition
Pin No.
1
2
3
4
5
6
7
Note : 1. S: power supply; I: input; O: output; PP: push-pull; OD: open-drain; NC: No connection or V
IH
4.3 MultiMediaCard Bus Topology
The MultiMediaCard bus has three communication lines and four supply lines:
-
CMD: Command is a bi-directional signal. Host and card drivers are operating in two modes, open
drain and push pull.
-
DAT: Data is a bi-directional signal. Host and card drivers are operating in push pull mode.
-
CLK: Clock is a host to card signal. CLK operates in push pull mode.
-
VDD: VDD is the power supply line for all cards.
-
VSS[1:2]: VSS are two ground lines.
Name
CS
DI
V
ss
V
cc
SCLK
V
ss2
DO
Type
*1
I
I
S
S
I
S
O/PP
Description
Chip Select
Data In
Ground
Power supply
Clock
Ground
Data out
Figure 4-2 Bus Circuitry Diagram
The R
OD
is switched on and off by the host synchronously to the open-drain and push-pull mode
transitions. R
DAT
and R
CMD
are pull-up resistors protecting the CMD and the DAT line against bus
floating when no card is inserted or when all card drivers are in a hi-impedance mode. A constant
current source can replace the R
OD
by achieving a better performance (constant slopes for the signal
相關(guān)PDF資料
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MC28U128HACB-0QC00 制造商:SAMSUNG 制造商全稱:Samsung semiconductor 功能描述:MultiMediaCard Specification
MC28U128HACC-0QC00 制造商:SAMSUNG 制造商全稱:Samsung semiconductor 功能描述:MultiMediaCard Specification
MC28U128HAFA-0QC00 制造商:SAMSUNG 制造商全稱:Samsung semiconductor 功能描述:MultiMediaCard Specification
MC28U128HAFB-0QC00 制造商:SAMSUNG 制造商全稱:Samsung semiconductor 功能描述:MultiMediaCard Specification
MC28U128HAFC-0QC00 制造商:SAMSUNG 制造商全稱:Samsung semiconductor 功能描述:MultiMediaCard Specification
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