參數(shù)資料
型號: 37C672
廠商: SMSC Corporation
英文描述: ENHANCED SUPER I/O CONTROLLER WITH FAST IR
中文描述: 增強的超級I / O控制器,快速紅外線
文件頁數(shù): 164/173頁
文件大小: 965K
代理商: 37C672
2-33
3802 GROUP USER’S MANUAL
APPLICATION
2.3 Serial I/O
2.3.5 Serial I/O application examples
(1) Communication using a clock synchronous serial I/O (transmit/receive)
_____
Outline : 2-byte data is transmitted and received through the clock synchronous serial I/O. The SRDY
signal is used for communication control.
Figure 2.3.17 shows a connection diagram, and Figure 2.3.18 shows a timing chart.
Fig. 2.3.17 Connection diagram [Communication using a clock synchronous serial I/O]
Specifications : The Serial I/O1 is used (clock synchronous serial I/O is selected)
Synchronous clock frequency : 125 kHz (f(X IN) = 4 MHz is divided by 32)
_____
The SRDY1 (receivable signal) is used.
_____
The receiving side outputs the SRDY1 signal at intervals of 2 ms (generated by
timer), and 2-byte data is transferred from the transmitting side to the receiving
side.
Fig. 2.3.18 Timing chart [Communication using a clock synchronous serial I/O]
D0
D4
D2
D1
D6
D5
D7
D3
D0
D4
D2
D1
D6
D5
D7
D3
D0
D1
TXD
SCLK1
SRDY1
2 ms
P41
/INT0
SCLK1
TXD
3802 group
SRDY1
SCLK
RXD
3802 group
Transmitting side
Receiving side
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