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): 11/173頁
文件大?。?/td> 965K
代理商: 37C672
APPLICATION
2.3 Serial I/O
2-51
3802 GROUP USER’S MANUAL
Control procedure : Figure 2.3.40 shows a control procedure at a transmitting side, and Figure 2.3.41
shows a control procedure at a receiving side.
Fig. 2.3.40 Control procedure at a transmitting side [Communication using UART]
SIO1STS (Address : 1916), bit0?
RESET
End of communication
(Address : 1A16)
(Address : 1B16)
(Address : 1C16)
(Address : 0816), bit0
(Address : 0916)
P4 (Address : 0816), bit0
1
Pass 10 ms?
Y
N
TB/RB (Address : 1816)
The second byte of
a transmission data
1
0
SIO1STS (Address : 1916), bit2?
1
0
Initialization
SIO1CON
UARTCON
BRG
P4
P4D
1001X0012
000010002
8– 1
.....
TB/RB (Address : 1816)
The first byte of a
transmission data
P4 (Address : 0816), bit0
0
1
0
X : This bit is not used in this application.
Set it to “0” or “1.” It’s value can be disregarded.
Set port P40 for a communication control.
An interval of 10 ms is generated by a timer.
Start of communication.
Write a transmission data
The Transmit buffer empty flag is set to “0”
by this writing.
Write a transmission data
The Transmit buffer empty flag is set to “0”
by this writing.
Check to be transferred data from the Transmit
buffer register to the Transmit shift register.
(Transmit buffer empty flag)
Check to be transferred data from the Transmit
buffer register to the Transmit shift register.
(Transmit buffer empty flag)
Check a shift completion of the Transmit shift register.
(Transmit shift register shift completion flag)
SIO1STS (Address : 1916), bit0?
0
XXXXXXX12
q
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