參數(shù)資料
型號(hào): IA16450-PLC44C
廠商: Innovasic Semiconductor
英文描述: Universal Asynchronous Receiver/Transmitter
中文描述: 通用異步接收器/發(fā)送器
文件頁(yè)數(shù): 2/10頁(yè)
文件大?。?/td> 97K
代理商: IA16450-PLC44C
Page 2 of 10
I
A16450
Universal Asynchronous Receiver/Transmitter
Preliminary Data Sheet
The IA16450 is a form, fit and function compatible part to the National NS16450 Univeral
Asynchronous Receiver/Transmitter. The IA16450 function receives and transmits data in a variety
of configurations including 5, 6, 7 or 8 bit data words, odd, even or no parity, and 1, 1.5, and 2 stop
bits. This megafunction includes an internal Baud Rate Generator and Interrupt Control
.
A
block
diagram is shown in Figure 1.
Copyright
1999, InnovASIC Inc.
Functional Block Diagram
Figure 1
DATA BUS
BUFFER
RECEIVER
BUFFER
REGISTER
LINE CONTROL
REGISTER
DIVISOR LATCH
(LSB)
DIVISOR LATCH
(MSB)
LINE STATUS
REGISTER
TRANSMITTER
HOLDING
REGISTER
MODEM
CONTROL
REGISTER
MODEM STATUS
REGISTER
INTERRUPT
ENABLE
REGISTER
INTERRUPT ID
REGISTER
INTERNAL DATA
BUS
RECEIVER
SHIFT
REGISTER
RECEIVER
TIMING
&
CONTROL
TRANSMITTER
TIMING
&
CONTROL
TRANSMITTER
SHIFT
REGISTER
INTERRUPT
CONTROL
LOGIC
MODEM
CONTROL
LOGIC
BAUD
GENERATOR
SIN
RCLK
BAUDOUT_n
SOUT
RTS_n
CTS_n
DTR_n
DSR_n
DCD_n
RI
OUT1_n
OUT2_n
INTR
DECODE
AND
CONTROL
LOGIC
A0
A1
A2
CS0
CS1
CS2_n
ADS_n
MR
RD
RD_n
WR
WR_n
DDIS
CSOUT
XIN
XOUT
D7:D0
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