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SCN2651 Datasheet

  • SCN2651

  • Programmable communications interface PCI

  • 15頁(yè)

  • PHILIPS

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Philips Semiconductors
Product specification
Programmable communications interface (PCI)
SCN2651
DESCRIPTION
The Philips Semiconductors SCN2651 PCI is a universal
synchronous/asynchronous data communications controller chip
designed for microcomputer systems. It interfaces directly to the
Philips Semiconductors SCN2650 microprocessor and may be used
in a polled or interrupt driven system environment. The SCN2651
accepts programmed instructions from the microprocessor and
supports many serial data communication disciplines, synchronous
and asynchronous, in the full or half-duplex mode.
The PCI serializes parallel data characters received from the
microprocessor for transmission. Simultaneously, it can receive
serial data and convert it into parallel data characters for input to the
microcomputer.
The SCN2651 contains a baud rate generator which can be
programmed to either accept an external clock or to generate
internal transmit or receive clocks. Sixteen different baud rates can
be selected under program control when operating in the internal
clock mode.
The PCI is constructed using Philips Semiconductors n-channel
silicon gate depletion load technology and is packaged in a 28-pin
DIP.
PIN CONFIGURATIONS
D2
D3
RxD
GND
D4
D5
D6
D7
TxC
A1
CE
1
2
3
4
5
6
7
DIP
8
9
10
11
28 D1
27 D0
26 V
CC
25 RxC
24 DTR
23 RTS
22 DSR
21 RESET
20 BRCLK
19 TxD
18 TxEMT/DSCHG
17 CTS
16 DCD
15 TxRDY
TOP VIEW
A0 12
R/W
13
RxRDY 14
FEATURES
鈥?/div>
Synchronous operation
鈥?/div>
5- to 8-bit characters
鈥?/div>
Single or double SYN operation
鈥?/div>
Internal character synchronization
鈥?/div>
Transparent or non-transparent mode
鈥?/div>
Automatic SYN or DLE-SYN insertion
鈥?/div>
SYN or DLE stripping
鈥?/div>
Odd, even, or no parity
鈥?/div>
Local or remote maintenance loopback mode
鈥?/div>
Baud rate: DC to 1Mbps (1X clock)
SD00049
OTHER FEATURES
鈥?/div>
Asynchronous operation
鈥?/div>
5- to 8-bit characters
鈥?/div>
1, 1-1/2 or 2 stop bits
鈥?/div>
Odd, even, or no parity
鈥?/div>
Parity, overrun and framing error detection
鈥?/div>
Line break detection and generation
鈥?/div>
False start bit detection
鈥?/div>
Automatic serial echo mode
鈥?/div>
Local or remote maintenance loopback mode
鈥?/div>
Baud rate: DC to 1Mbps
(1X clock)
DC to 62.5kbps (16X clock)
DC to 15.625kbps
(64X clock)
鈥?/div>
Internal or external baud rate clock
鈥?/div>
16 internal rates 鈥?50 to 19,200 baud
鈥?/div>
Double buffered transmitter and receiver
鈥?/div>
Full or half duplex operation
鈥?/div>
TTL compatible inputs and outputs
鈥?/div>
Single 5V power supply
鈥?/div>
No system clock required
鈥?/div>
28-pin dual in-line package
APPLICATIONS
鈥?/div>
Intelligent terminals
鈥?/div>
Network processors
鈥?/div>
Front-end processors
鈥?/div>
Remote data concentrators
鈥?/div>
Computer to computer links
鈥?/div>
Serial peripherals
ORDERING CODE
V
CC
= 5V +5%
PACKAGES
Commercial
0擄C to +70擄C
28-Pin Plastic Dual In-Line Package (DIP)
SCN2651CC1N28
Industrial
-40擄C to +85擄C
Not available
SOT117-2
DWG #
1994 Apr 27
1
853-1067 12793

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