Chips & Technologies CS8237 (TURBO CACHE-BASED 386/AT)
chipChipset parts
Chips & Technologies 82C307 Chips & Technologies 82C305 Chips & Technologies 82C303 Chips & Technologies 82C304 Chips & Technologies 82C306 Chips & Technologies 82C301 (any brand) 82C206
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Documented parts

The 82C206 Integrated Peripheral Controller (IPC) is a single-chip integration of all the main peripheral parts attached to the X bus of PC/AT architecture. The 82C206 replaces the following peripheral logic on motherboards:

  • two 8237 DMA controllers
  • two 8259A interrupt controllers
  • one 8254 timer/counter
  • one 146818A-compatible real-time clock
  • one 74LS612 memory mapper


  • Seven DMA channels
  • 13 interrupt request channels
  • two timer/counter channels

Four DMA transfer modes supported:

  • Single
  • Block
  • Demand
  • Cascade

Special Commands provided for ease of programming:

  • Clear byte pointer flip-flop
  • Set byte pointer flip-flop
  • Master clear
  • Clear request mask register
  • Clear mode register counter

Other features:

  • Contains 114 bytes of CMOS RAM
  • 8MHz DMA clock with programmable internal divider for 4MHz operation
  • 16MB DMA address space
  • Programmable wait states for DMA cycles
  • Reduced recovery time (120ns) between I/O operations for the 8237, 8259A and 8254
  • 84-pin PLCC (plastic leadless chip carrier) or 100-pin QFP (quad flat pack)
Last updated 2019-04-29T22:00:00Z
Drivers: not available


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