SC28L91 Philips Semiconductors, SC28L91 Datasheet - Page 7

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SC28L91

Manufacturer Part Number
SC28L91
Description
3.3V-5.0V Universal Asynchronous Receiver/Transmitter (UART)
Manufacturer
Philips Semiconductors
Datasheet

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Philips Semiconductors
2000 Sep 22
3.3V–5.0V Universal Asynchronous
Receiver/Transmitter (UART)
RESETN
DACKN
X1/CLK
INTRN
D0–D7
IACKN
A0–A3
R/WN
CEN
X2
4
8
OPERATION CONTROL
INTERRUPT CONTROL
R/W CONTROL
BUS BUFFER
SELECTORS
GENERATOR
BAUD RATE
COUNTER/
ADDRESS
XTAL OSC
DECODE
CLOCK
TIMING
TIMER
IMR
CSR
ACR
CTU
ISR
IVR
CTL
Figure 2. Block Diagram (68XXX mode)
7
16 BYTE TRANSMIT
WATCH DOG TIMER
16 BYTE RECEIVE
SHIFT REGISTER
DATA CHANNEL
SELECT LOGIC
DETECTORS (4)
RECEIVE SHIFT
OUTPUT PORT
INPUT PORT
CHANGE OF
FUNCTION
TRANSMIT
REGISTER
MRA0, 1, 2
OPCR
STATE
FIFO
FIFO
OPR
CRA
SRA
IPCR
ACR
6
8
Product specification
SC28L91
SD00703
TxDA
RxDA
IP0-IP5
OP0-OP7
V
V
CC
SS

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