SCC2698B Philips Semiconductors, SCC2698B Datasheet - Page 4

• Manufacturer Part Number: SCC2698B
• Description: Enhanced octal universal asynchronous receiver/transmitter Octal UART
• Manufacturer: Philips Semiconductors

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Philips Semiconductors
BLOCK DIAGRAM
2000 Jan 31
Enhanced octal universal asynchronous
receiver/transmitter (Octal UART)
X1/CLK
RESET
A0–A5
D0–D7
WRN
RDN
CEN
X2
6
8
OPERATION CONTROL
R/W CONTROL
(SAME AS A)
(SAME AS A)
(SAME AS A)
BUS BUFFER
OSCILLATOR
POWER-ON
ADDRESS
BLOCK C
BLOCK D
BLOCK B
DECODE
CRYSTAL
TIMING
LOGIC
CONTROL
TIMING
Figure 2. Block Diagram
INTERNAL DATA
BUS
4
FUNCTION SELECT
INTERRUPT CONTROL
TRANSMIT HOLD
TRANSMIT SHIFT
RECEIVE SHIFT
RECEIVE HOLD
DETECTORS (4)
REGISTER (3)
OUTPUT PORT
CHANGE-OF-
CHANNEL A
CHANNEL B
(AS ABOVE)
SELECTORS
INPUT PORT
REGISTER
REGISTER
REGISTER
COUNTER/
CSR Rx
CSR Tx
MR1, 2
LOGIC
CLOCK
STATE
TIMING
TIMER
OPCR
CTUR
IPCR
CTLR
ACR
CR
SR
ACR
IMR
ISR
BLOCK A
SCC2698B
Product specification
2
2
2
2
2
TxDA
RxDA
TxDb
RxDb
MPI0
MPIb
MPP1
MPP2
MPO
INTRAN
SD00185