sc68c2550b NXP Semiconductors, sc68c2550b Datasheet - Page 12

• Manufacturer Part Number: sc68c2550b
• Description: Sc68c2550b 5 V, 3.3 V And 2.5 V Dual Uart, 5 Mbit/s Max. , With 16-byte Fifos And Motorola Up Interface
• Manufacturer: NXP Semiconductors

Philips Semiconductors
9397 750 14941
Product data sheet
Fig 4. Internal Loop-back mode diagram
RXRDYA, RXRDYB
TXRDYA, TXRDYB
D0 to D7
A0 to A3
RESET
R/W
IRQ
CS
SC68C2550B
INTERRUPT
REGISTER
CONTROL
CONTROL
DATA BUS
SELECT
LOGIC
LOGIC
LOGIC
AND
5 V, 3.3 V and 2.5 V dual UART, 5 Mbit/s (max.), with 16-byte FIFOs
Rev. 02 — 28 April 2005
XTAL1
GENERATOR
REGISTERS
REGISTERS
CLOCK AND
BAUD RATE
TRANSMIT
RECEIVE
FIFO
FIFO
XTAL2
TRANSMIT
REGISTER
REGISTER
RECEIVE
CONTROL
SHIFT
SHIFT
MODEM
LOGIC
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
MCR[4] = 1
SC68C2550B
002aab336
RTSA, RTSB
CTSA, CTSB
DTRA, DTRB
DSRA, DSRB
(OP1A, OP1B)
RIA, RIB
(OP2A, OP2B)
CDA, CDB
TXA, TXB
RXA, RXB
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