UM83C001
Features
- Serializer-deserializer
- Programmable track format
- External drive select and head select registers for expandability
- Internal phase detector for phase lock oscillator
- Interface options: ST-506, ST-412, ST-412HP, ESDI,
FLOPPY, and QIC-36 TAPE
- Sector options: SOFT, HARD, ESDI ADDRESS MARKS, ESDI BYTE and ESDI BYTE CLOCKS
- Recording options: UNENCODED, FM, MFM or ALL
- Error checking and correcting options: ECC or CRC
- Write data options: PULSE, NAZ or N RZI
- Read data options: .PULSE, NAZ or NAZI
- TTL patible inputs and outputs. Outputs drive 8
LSTTL loads
General Description
The UMC Hard Disk Controller UM83C001, is a CMOS LSI device which performs a majority of the functions for controlling floppy drives, Winchester drives and QIC-36 streaming tape drives. The following is a brief list of its capabilities:
Interface Options ST-506 (non-buffered seek Winchesters) ST-412 (buffered seek Winchesters) ST-412HP (10 mbos buttered seek Winchesters)
ESDI STEP/SERIAL...
