MC68302AG20C

• MC68000/MC68008 Microprocessor Core
• Efficient architecture involves a separate RISC processor for handling communications
• Three Serial Communications Controllers (SCCs)
• Support for HDLC/SDLC, Bisync, UART, DDCMP, and Totally Transparent protocols.
• Two Serial Management Controllers (SMCs) for IDL and GCI Channel.
• Available at 16, 20, 25, and 33 MHz in three different Thin Quad Flat Pack Packages.
• Strong 3rd Party tools support.

• ISDN equipment
• Data Concentrators
• Modems
• Line Cards
• Network Bridges
• Gateways

Technical Specifications

• MC68000/MC68008 Microprocessor Core (May be disabled to use the IMP as a peripheral)
• SIB Including:
  • Independent Direct Memory Access (IDMA) Controller
  • Interrupt controller with two modes of operation
  • Parallel I/O ports, some with interrupt capability
  • On-Chip 1152-bytes of dual-port RAM
  • Three timers, with a software watchdog timer
  • Four programmable chip-select lines with wait-state logic
  • Programmable address mapping of dual-port RAM and IMP registers

• On-Chip clock generator with an output clock signal
• System Control
  • Bus arbitration logic with low interrupt latency support
  • System control register
  • Hardware watchdog for monitoring bus activity
  • Low power (Standby) modes
  • Disable CPU logic (M68000)
  • Freeze control for debugging selected on-chip peripherals
  • DRAM refresh controller

• CP Including:
  • Main controller (RISC Processor)
  • Three full-duplex Serial Communication/Controllers with the following protocols:
    • HDLC/SDLC
    • Bisync
    • UART
    • DDCMP
    • Totally Transparent
    • V.110
  • Six serial DMA channels dedicated to the three SOCs
  • Capability to send/receive up to eight buffers/frames without M68000 core intervention
  • Flexible physical interface accessible by SCCs for Inter-chip Digital Link (IDL), General Circuit Interface (GCI).
  • Pulse Code Modulation (PCM), and Non-multiplexed Serial Interface (NMSI) Operation.
  • Serial Communication Port (SCP) for synchronous communication.
  • Two Serial Management Controllers (SMCs) for IDL and GCI Channel.