Control system and method for multiple rate disk drive data tran

Details Control system and method for multiple rate disk drive data tran Control system and method for multiple rate disk drive data tran

1989-12-18

1994-03-01

Harrell, Robert B.

Boots, shoes, and leggings

364DIG2, 364934, 3649342, G06F 300

Patent

active

052915883

ABSTRACT:
A computer disk drive control adapts the rate of data transfer between a disk drive and a CPU to correspond to one of three industry standard transfer rates. The timing of disk controller signals is provided for by a two phase state machine that receives a signal representative of a selected data transfer rate and generates disk controller signals of the appropriate frequency and configuration. Such disk controller signals cause a disk controller to effect data transfer at the selected rate. In a preferred embodiment, the two phase state machine is driven by two opposite phases of a single 24 MHz clock.

REFERENCES:
patent: 4494196 (1985-01-01), Greer
patent: 4651277 (1987-03-01), Sakaji

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