SCN68562 PDF даташит
Спецификация SCN68562 изготовлена «Philips» и имеет функцию, называемую «Dual universal serial communications controller DUSCC». |
|
Детали детали
Номер произв | SCN68562 |
Описание | Dual universal serial communications controller DUSCC |
Производители | Philips |
логотип |
18 Pages
No Preview Available ! |
INTEGRATED CIRCUITS
SCN68562
Dual universal serial communications
controller (DUSCC)
Product specification
IC19 Data Handbook
1995 May 01
Philips
Semiconductors
No Preview Available ! |
Philips Semiconductors
Dual universal serial communications controller (DUSCC)
Product specification
SCN68562
DESCRIPTION
The Philips Semiconductors SCN68562 Dual Universal Serial
Communications Controller (DUSCC) is a single-chip MOS-LSI
communications device that provides two independent,
multi-protocol, full-duplex receiver/transmitter channels in a single
package. It supports bit-oriented and character-oriented (byte count
and byte control) synchronous data link controls as well as
asynchronous protocols. The SCN68562 interfaces to the 68000
MPUs via asynchronous bus control signals and is capable of
program-polled, interrupt driven, block-move or DMA data transfers.
The operating mode and data format of each channel can be
programmed independently.
Each channel consists of a receiver, a transmitter, a 16-bit
multifunction counter/timer, a digital phase-locked loop (DPLL), a
parity/CRC generator and checker, and associated control circuits.
The two channels share a common bit rate generator (BRG),
operating directly from a crystal or an external clock, which provides
16 common bit rates simultaneously. The operating rate for the
receiver and transmitter of each channel can be independently
selected from the BRG, the DPLL, the counter/timer, or from an
external 1X or 16X clock, making the DUSCC well suited for
dual-speed channel applications. Data rates up to 4Mbits per
second are supported.
The transmitter and receiver each contain a four-deep FIFO with
appended transmitter command and receiver status bits and a shift
register. This permits reading and writing of up to four characters at
a time, minimizing the potential of receiver overrun or transmitter
underrun, and reducing interrupt or DMA overhead. In addition, a
flow control capability is provided to disable a remote transmitter
when the FIFO of the local receiving device is full.
Two modem control inputs (DCD and CTS) and three modem
control outputs are provided. These inputs and outputs can be
optionally programmed for other functions.
FEATURES
General Features
• Dual full-duplex synchronous/asynchronous receiver and
transmitter
• Multiprotocol operation
– BOP: HDLC/ADCCP, SDLC, SDLC loop, X.25 or X.75 link level,
etc.
– COP: BISYNC, DDCMP
– ASYNC: 5–8 bits plus optional parity
• Four character receiver and transmitter FIFOs
PIN CONFIGURATIONS
N PACKAGE
IACKN 1
A3 2
A2 3
A1 4
RTxDAKBN/ 5
GPI1BN
IRQN 6
RESETN 7
RTSBN/ 8
SYNOUTBN
TRxCB 9
RTxCB 10
DCDBN/ 11
SYNIBN
RxDB 12
TxDB 13
TxDAKBN/
GPI2BN
RTxDRQBN/
GPO1BN
TxDRQBN/
GPO2BN/RTSBN
CTSBN/LCBN
14
15
16
17
D7 18
D6 19
D5 20
D4 21
DTACKN 22
DTCN 23
GND 24
48 VDD
47 A4
46 A5
45 A6
44 RTxDAKAN/
GPI1AN
43 X1/CLK
42 X2/IDCN
41 RTSAN/
SYNOUTAN
40 TRxCA
39 RTxCA
DIP
38 DCDAN/
SYNIAN
37 Rxda
36 TxDA
35 TxDAKAN/
GPI2AN
34 RTxDRQAN/
GPO1AN
33 TxDRQAN/
GPO2AN/RTSAN
32 CTSAN/LCAN
31 D0
30 D1
29 D2
28 D3
27 DONEN
26 R/WN
25 CSN
INDEX
CORNER
8
A PACKAGE
7 1 47
46
PLCC
20
21
Pin Function
34
33
TOP VIEW
Pin Function
1 IACKN
2 A3
3 A2
4 A1
5 RTxDAKBN/
GPI1BN
6 IRQN
7 NC
8 RESETN
9 RTSBN/
SYNOUTBN
10 TRxCB
11 RTxCB
12 DCDBN/
SYNIBN
13 NC
14 RxDB
15 TxDB
16 TxDAKBN/
GPI2BN
17 RTxDRQBN/
GPO1BN
18 TxDRQBN/
GPO2BN/RTSBN
19 CTSBN/LCBN
20 D7
21 D6
22 D5
23 D4
24 DTACKN
25 DTCN
26 GND
27 CSN
28 R/WN
29 DONEN
30 D3
31 D2
32 D1
33 D0
34 NC
35 CTSAN/LCAN
36 TxDRQAN/
GPO2AN/RTSAN
37 RTxDRQAN/
GPO1AN
38 TxDAKAN/
GPI2AN
39 TxDA
40 RxDA
41 NC
42 DCDAN/
SYNIAN
43 RTxCA
44 TRxCA
45 RTSAN/
SYNOUTAN
46 X2/IDCN
47 X1/CLK
48 RTxDAKAN/
GPI1AN
49 A6
50 A5
51 A4
52 VDD
SD00222
Figure 1. Pin Configurations
1995 May 01
2 853-0831 15179
No Preview Available ! |
Philips Semiconductors
Dual universal serial communications controller (DUSCC)
Product specification
SCN68562
• 0 to 4MHz data rate
• Programmable bit rate for each receiver and transmitter selectable
from:
– 16 fixed rates: 50 to 38.4k baud
– One user-defined rate derived from programmable
counter/timer
– External 1X or 16X clock
– Digital phase-locked loop
• Parity and FCS (frame check sequence LRC or CRC) generation
and checking
• Programmable data encoding/decoding: NRZ, NRZI, FM0, FM1,
Manchester
• Programmable channel mode: full- and half-duplex, auto-echo, or
local loopback
• Programmable data transfer mode: polled, interrupt, DMA, wait
• DMA interface
– Compatible with the Philips Semiconductors SCB68430 Direct
Memory Access Interface (DMAI) and other DMA controllers
– Single- or dual-address dual transfers
– Half- or full-duplex operation
– Automatic frame termination on counter/timer terminal count or
DMA DONE
• Interrupt capabilities
– Daisy chain option
– Vector output (fixed or modified by status)
– Programmable internal priorities
– Maskable interrupt conditions
• Multi-function programmable 16-bit counter/timer
– Bit rate generator
– Event counter
– Count received or transmitted characters
– Delay generator
– Automatic bit length measurement
• Modem controls
– RTS, CTS, DCD, and up to four general I/O pins per channel
– CTS and DCD programmable autoenables for Tx and Rx
– Programmable interrupt on change of CTS or DCD
• On-chip oscillator for crystal
• TTL compatible
• Single +5V power supply
Asynchronous Mode Features
• Character length: 5 to 8 bits
• Odd or even parity, no parity, or force parity
• Up to two stop bits programmable in 1/16-bit increments
• 1X or 16X Rx and Tx clock factors
• Parity, overrun, and framing error detection
• False start bit detection
• Start bit search 1/2-bit time after framing error detection
• Break generation with handshake for counting break characters
• Detection of start and end of received break
• Character compare with optional interrupt on match
• Transmits up to 4Mbs and receive up to 2Mbps data rates
Character-Oriented Protocol Features
• Character length: 5 to 8 bits
• Odd or even parity, no parity, or force parity
• LRC or CRC generation and checking
• Optional opening PAD transmission
• One or two SYN characters
• External sync capability
• SYN detection and optional stripping
• SYN or MARK line-fill on underrun
• Idle in MARK or SYNs
• Parity, FCS, overrun, and underrun error detection
BISYNC Features
– EBCDIC or ASCII header, text and control messages
– SYN, DLE stripping
– EOM (end of message) detection and transmission
– Auto transparent mode switching
– Auto hunt after receipt of EOM sequence (with closing PAD
check after EOT or NAK)
– Control character sequence detection for both transparent and
normal text
Bit-Oriented Protocol Features
• Character length: 5 to 8 bits
• Detection and transmission of residual character: 0–7 bits
• Automatic switch to programmed character length for 1 field
• Zero insertion and deletion
• Optional opening PAD transmission
• Detection and generation of FLAG, ABORT, and IDLE bit patterns
• Detection and generation of shared (single) FLAG between
frames
• Detection of overlapping (shared zero) FLAGs
• ABORT, ABORT-FLAGs, or FCS FLAGs line-fill on underrun
• Idle in MARK or FLAGs
• Secondary address recognition including group and global
address
• Single- or dual-octet secondary address
• Extended address and control fields
• Short frame rejection for receiver
• Detection and notification of received end of message
• CRC generation and checking
• SDLC loop mode capability
1995 May 01
3
Скачать PDF:
[ SCN68562.PDF Даташит ]
Номер в каталоге | Описание | Производители |
SCN68562 | Dual universal serial communications controller DUSCC | Philips |
Номер в каталоге | Описание | Производители |
TL431 | 100 мА, регулируемый прецизионный шунтирующий регулятор |
Unisonic Technologies |
IRF840 | 8 А, 500 В, N-канальный МОП-транзистор |
Vishay |
LM317 | Линейный стабилизатор напряжения, 1,5 А |
STMicroelectronics |
DataSheet26.com | 2020 | Контакты | Поиск |