A16450 データシートの表示（PDF） - Altera Corporation
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A16450 Datasheet PDF : 16 Pages
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a16450 Universal Asynchronous Receiver/Transmitter Data Sheet
Functional
Description
Figure 2 shows the a16450 block diagram.
Figure 2. a16450 Block Diagram
sin
Receiver Register
& Control
rclk
din[7..0]
a[2..0]
cs0
cs1
ncs2
nads
mr
rd
nrd
wr
nwr
ddis
csout
Decode &
Control
Logic
clk
Receiver Buffer
Register
Line Control
Register
Divisor Register
(MSB)
Divisor Register
(LSB)
Line Status
Register
Transmitter Holding
Register
Modem Control
Register
Modem Status
Register
Interrupt Enable
Register
Interrupt ID
Register
Output Data
Multiplexer
dout[7..0]
Baud
Generator
nbaudout
Transmitter
Register &
sout
Control
Modem
Control
Logic
nrts
ndtr
nout1
nout2
ncts
ndsr
ndcd
nri
Interrupt
Control
Logic
intr
68
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