SCC68692E1F40 데이터 시트보기 (PDF) - Philips Electronics
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SCC68692E1F40 Datasheet PDF : 30 Pages
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Philips Semiconductors
Dual asynchronous receiver/transmitter (DUART)
Product specification
SCC68692
BLOCK DIAGRAM
8
D0–D7
BUS BUFFER
R/WN
DTACKN
CSN
4
A1–A4
RESETN
OPERATION CONTROL
ADDRESS
DECODE
R/W CONTROL
INTRN
IACKN
INTERRUPT CONTROL
IMR
ISR
IVR
X1/CLK
X2
TIMING
BAUD RATE
GENERATOR
CLOCK
SELECTORS
COUNTER/
TIMER
XTAL OSC
CSRA
CSRB
ACR
CTUR
CTLR
CHANNEL A
TRANSMIT
HOLDING REG
TRANSMIT
SHIFT REGISTER
RECEIVE
HOLDING REG (3)
RECEIVE
SHIFT REGISTER
MRA1, 2
CRA
SRA
CHANNEL B
(AS ABOVE)
INPUT PORT
CHANGE OF
STATE
DETECTORS (4)
IPCR
ACR
OUTPUT PORT
FUNCTION
SELECT LOGIC
OPCR
OPR
Figure 2. Block Diagram
TxDA
RxDA
TxDB
RxDB
6
IP0-IP5
8
OP0-OP7
VCC
GND
SD00145
1998 Sep 04
4
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