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參數(shù)資料
| 型號： | VT8231 |
| 廠商： | Electronic Theatre Controls, Inc. |
| 元件分類： | 晶體 |
| 英文描述： | CRYSTAL 8.00MHZ 18PF SMD |
| 中文描述： | 南橋伏特，PC99柔順 |
| 文件頁數(shù)： | 26/132頁 |
| 文件大?。?/td> | 1210K |
| 代理商： | VT8231 |
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VT8231
Preliminary Revision 0.8
October 29, 1999
-20-
Pinouts
7HFKQRORJLHV,QF
:H &RQQHFW
Serial Port and Infrared Interface
Signal Description
Transmit Data.
Serial port transmit data out.
Receive Data.
Serial port receive data in.
O / O
Infrared Transmit.
IR transmit data out (Rx76[5] = 0) selectable from serial port
1, 2, or 3. General Purpose Output 14 if Rx76[5] = 1
I / O
Infrared Receive.
IR receive data in (Rx76[5] = 0) selectable to serial port 1, 2,
or 3. General Purpose Output 15 if Rx76[5] = 1
I / I
Infrared Receive.
IR receive data in (Rx76[5] = 0)
O
Request To Send.
Indicator that the serial output port is ready to transmit data.
Typically used as hardware handshake with CTS# for low level flow control.
Designed for direct input to external RS-232C driver.
I
Clear To Send.
Indicator to the serial port that an external communications
device is ready to receive data. Typically used as hardware handshake with RTS#
for low level flow control. Designed for input from external RS-232C receiver.
O
Data Terminal Ready.
Indicator that serial port is powered, initialized, and
ready. Typically used as hardware handshake with DSR# for overall readiness to
communicate. Designed for direct input to external RS-232C driver.
I
Data Set Ready.
Indicator to serial port that an external serial communications
device is powered, initialized, and ready. Typically used as hardware handshake
with DTR# for overall readiness to communicate. Designed for direct input from
external RS-232C receiver.
I
Data Carrier Detect.
Indicator to serial port that an external modem is detecting
a carrier signal (i.e., a communications channel is currently open). In direct
connect environments, this input will typically be driven by DTR# as part of the
DTR/DSR handshake. Designed for direct input from external RS-232C receiver.
I
Ring Indicator.
Indicator to serial port that an external modem is detecting a ring
condition. Used by software to initiate operations to answer and open the
communications channel. Designed for direct input from external RS-232C
receiver (whose input is typically not connected in direct connect environments).
Signal Name
TXD
RXD
IRTX
/ GPO14
Pin #
B15
E14
R8
I/O
O
I
IRRX
/ GPO15
U8
IRRX2
/ GPI
RTS#
T8
A15
CTS#
B16
DTR#
A16
DSR#
D14
DCD#
F14
RI#
C16
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