參數(shù)資料
型號: HB288016MM1
廠商: Hitachi,Ltd.
英文描述: MultiMediaCard 16 MByte
中文描述: 多媒體16字節(jié)
文件頁數(shù): 62/79頁
文件大小: 233K
代理商: HB288016MM1
HB288016MM1
62
SPI Bus Timing
All timing diagrams use the following schematics and abbreviations:
H: Signal is high (logical ‘1’)
L: Signal is low (logical ‘0’)
X: Don’t care
Z: High impedance state (-> = 1)
*: Repeater
Busy: Busy Token
Command: Command token
Response: Response token
Data block: Data token
All timing values are defined in Table “Timing Values”. The host must keep the clock running for at least
N
CR
clock cycles after receiving the card response. This restriction applies to both command and data
response tokens.
Command/Response
Host Command to Card Response - Card is ready
H H L L L
N
CS
* * * * * * * * * * * * * * * * * *
L
L H H H
CS
X X H H H H
6 bytes command
H H
H H
X X X
Datain
L
L
N
EC
H H H H H
* * * * * * *
Z Z Z H H H
H H
H H
H Z Z
Dataout
H
H
H
H H H
1 or 2 bytes response
N
CR
* * * * * * *
Host Command to Card Response - Card is busy
H L L L
N
CS
* * * * * * * * * * * * * * * * * *
L L
L L
L
H H
CS
X H H H H
6 bytes command
H H
H H
X X
Datain
L
H
H
L
L L
L
H H H H H
H H H H
H H H H
Z Z H H H H
H
busy
card response
H Z
Dataout
busy
H H
H H H
X X X
L Z Z Z
H H H H
N
EC
N
DS
N
EC
N
CR
* * * * * * *
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