參數(shù)資料
型號: HD404358S
廠商: Hitachi,Ltd.
英文描述: 4-bit HMCS400-Series microcomputer
中文描述: 4位HMCS400系列微機
文件頁數(shù): 66/100頁
文件大?。?/td> 398K
代理商: HD404358S
HD404358 Series
66
Transmit Clock Error Detection (In External Clock Mode):
The serial interface will malfunction if a
spurious pulse caused by external noise conflicts with a normal transmit clock during transfer. A transmit
clock error of this type can be detected as shown in figure 54.
Transfer completion
(IFS 1)
Interrupts inhibited
IFS 0
SMR write
IFS = 1
Transmit clock
error processing
Normal
termination
Yes
No
Transmit clock error detection flowchart
Transmit clock error detection procedure
State
SCK
pin (input)
Transmit clock
wait state
Transfer state
Transfer state
Transmit clock wait state
Noise
Transfer state has been
entered by the transmit clock
error. When SMR is written,
IFS is set.
Flag set because octal
counter reaches 000
Flag reset at
transfer completion
SMR write
IFS
1
2
3
4
5
6
7
8
Figure 54 Transmit Clock Error Detection
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