82371AB Datasheet, PDF (207/284 Pages) Intel Corporation – PCI-TO-ISA / IDE XCELERATOR PIIX4

E
82371AB (PIIX4)
Throttle
Clocks
STPCLK#
Stop Grant
Clocks
Programmable Duty Cycle
244 µs Throttle
STPCLK#
Stop Clock
Clocks
STPCLK#
Software
(OS or APM)
The Clock Control Unit
Remains at Full-Speed until
Software Re-enables the
Clock Control Mode
Clock Break
Software
Event
(OS or APM)
Figure 11. Clock Control Mechanisms (NON-Burst)
clk_cnt1
PRELIMINARY
207
4/9/97 2:23 PM PIIX4aDS
INTEL CONFIDENTIAL
(until publication date)