SC26C562C1A

DESCRIPTION

The Philips Semiconductors SC26C562 Dual Universal Serial Communications Controller (CDUSCC) is a single-chip CMOS-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 SC26C562 interfaces to synchronous bus MPUs and is capable of program-polled, interrupt driven, block-move or DMA data transfers.

FEATURES

General Features
• Dual full-duplex synchronous/ asynchronous receiver and transmitter
• Multi-protocol operation
– BOP: HDLC/ADCCP, SDLC, SDLC loop, X.25 or X.75 link level, etc.
– COP: Single SYNC, dual SYNC, BiSYNC, DDCMP
– ASYNC: 5-8 bits plus optional parity
• Sixteen character receive and transmit FIFOs with interrupt threshold control
• FIFO’ed status bits
• Watchdog timer
• 0 to 10 Mbit/s data rate
• Programmable bit rate for each receiver and transmitter selectable from:
– 19 fixed rates: 50 to 64 kbaud
– 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- or half-duplex, auto-echo, or local loopback
• Programmable data transfer mode: polled, interrupt, DMA, wait
• DMA interface
– Compatible with Synchronous and Asynchronous bus DMA controllers
– Half- or full-duplex operation
– Single or dual address data transfers
– Automatic frame termination on counter/ timer terminal count or DMA DONE (EOPN)
• Transmit path clear status
• High speed data bus interface: 160 ns bus cycle
• DPLL operation up to 312.5 kHz with internal clock
• Interrupt capabilities
– Vector output (fixed or modified by status)
– Individual interrupt enable bits
– Programmable internal priorities
– Maskable interrupt conditions
– 80XX/X compatible
• 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 purpose I/O pins per channel
– CTS and DCD programmable auto-enables for Tx and Rx
– Programmable interrupt on change of CTS or DCD
• On-chip oscillator for crystal
• TTL compatible
• Single +5 V power supply