SAB82C258A-20-N
Overview
The SAB 82258A is an advanced general-purpose fourchannel DMA controller tailored for efficient high speed data transfer between peripheral devices and memories. It is either coupled tightly with a companion CPU (local mode) or working in stand alone applications using the remote mode.
- 16-bit DMA controller for 16-bit family processors - SAB 80286 - SAB 80186 188 - SAB 8086/88
- 4 independent high-speed DMA channels
- 16 Mbyte addressing range
- 16 Mbyte maximum block length
- Memory based communication with CPU
- “On-the fly” compare, translate and verify operations
- Transfer rates up to 10 Mbyte/s
- 32-bit-fly-by transfers with up to 20 Mbyte/s (10-MHz system)
- Single cycle and two cycle transfer
- Automatic chaining of command blocks
