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參數(shù)資料
型號(hào): W83637HF
廠商: WINBOND ELECTRONICS CORP
英文描述: LPC I/O
中文描述: LPC的I / O
文件頁數(shù): 22/149頁
文件大小: 936K
代理商: W83637HF
W83637HF
Publication Release Date: June 25, 2003
- 17 -
Revision 1.3
5.4 Serial Port Interface
SYMBOL
CTSA#
CTSB#
PIN
I/O
FUNCTION
49
78
IN
t
Clear To Send. It is the modem control input.
The function of these pins can be tested by reading bit 4 of the
handshake status register.
DSRA#
DSRB#
50
79
IN
t
Data Set Ready. An active low signal indicates the modem or
data set is ready to establish a communication link and transfer
data to the UART.
RTSA#
HEFRAS
51
O
8c
IN
cd
UART A Request To Send. An active low signal informs the
modem or data set that the controller is ready to send data.
During power-on reset, this pin is pulled down internally and is
defined as HEFRAS, which provides the power-on value for CR26
bit 6 (HEFRAS). A 4.7 k
is recommended if intends to pull up.
(select 4EH as configuration I/O port
s address)
RTSB#
ENGMTO
80
O
8c
IN
cd
UART B Request To Send. An active low signal informs the
modem or data set that the controller is ready to send data.
Watch Dog Time-Out enable.
DTRA
PNPCVS
52
O
8c
IN
cd
UART A Data Terminal Ready. An active low signal informs the
modem or data set that the controller is ready to communicate.
During power-on reset, this pin is pulled down internally and is
defined as PNPCVS, which provides the power-on value for CR24
bit 0 (PNPCVS). A 4.7 k
is recommended if intends to pull up.
(clear the default value of FDC, UARTs, PRT, Game port and
MIDI port)
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PDF描述
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W83637HF_06 制造商:WINBOND 制造商全稱:Winbond 功能描述:LPC I/O
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