AMD-K6-2E Datasheet, PDF (144/332 Pages) Advanced Micro Devices – AMD-K6™-2E Embedded Processor

AMD-K6™-2E Processor Data Sheet
Preliminary Information
22529B/0—January 2000
5.51
VCC2DET (VCC2 Detect)
Pin Attribute
Pin Location
Summary
Output
AL-01
VCC2DET is internally tied to V_SS (logic level 0) to indicate to
the system logic that it must supply the specified dual-voltage
requirements to the V_CC2 and V_CC3 pins. The V_CC2 pins supply
voltage to the processor core, independent of the voltage
supplied to the I/O buffers on the V_CC3 pins. Upon sampling
VCC2DET Low, system logic should sample VCC2H/L# to
identify core voltage requirements.
Driven
VCC2DET always equals 0 and is never floated—even during
the three-state test mode.
126
Signal Descriptions
Chapter 5