SCC68692C1F40 PHILIPS [NXP Semiconductors], SCC68692C1F40 Datasheet - Page 4
SCC68692C1F40
Manufacturer Part Number
SCC68692C1F40
Description
Dual asynchronous receiver/transmitter DUART
Manufacturer
PHILIPS [NXP Semiconductors]
Datasheet
1.SCC68692C1F40.pdf
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Philips Semiconductors
BLOCK DIAGRAM
1998 Sep 04
Dual asynchronous receiver/transmitter (DUART)
DTACKN
RESETN
X1/CLK
IACKN
INTRN
D0–D7
A1–A4
R/WN
CSN
X2
4
8
OPERATION CONTROL
INTERRUPT CONTROL
R/W CONTROL
BUS BUFFER
GENERATOR
SELECTORS
BAUD RATE
COUNTER/
XTAL OSC
ADDRESS
DECODE
CLOCK
TIMING
TIMER
CTUR
CSRB
CTLR
CSRA
IMR
ACR
ISR
IVR
Figure 2. Block Diagram
4
SHIFT REGISTER
HOLDING REG (3)
SHIFT REGISTER
SELECT LOGIC
DETECTORS (4)
HOLDING REG
OUTPUT PORT
CHANNEL A
CHANNEL B
(AS ABOVE)
INPUT PORT
CHANGE OF
FUNCTION
TRANSMIT
TRANSMIT
RECEIVE
RECEIVE
MRA1, 2
STATE
OPCR
OPR
CRA
SRA
IPCR
ACR
6
8
SCC68692
Product specification
SD00145
TxDA
RxDA
TxDB
RxDB
IP0-IP5
OP0-OP7
V
GND
CC
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