AMD-K6 AMD [Advanced Micro Devices], AMD-K6 Datasheet - Page 247

• Manufacturer Part Number: AMD-K6
• Description: AMD-K6 Processor
• Manufacturer: AMD [Advanced Micro Devices]

20695H/0—March 1998
13
13.1
Chapter 13
Power and Grounding
Power Connections
The AMD-K6 processor is a dual voltage device. Two separate
supply voltages are required: V
core voltage for the processor and V
See “Electrical Data” on page 233 for the value and range of V
and V
There are 28 V
processor. (See “Pin Designations” on page 269 for all power
and ground pin designations.) The large number of power and
ground pins are provided to ensure that the processor and
package maintain a clean and stable power distribution
network.
For proper operation and functionality, all V
pins must be connected to the appropriate planes in the circuit
board. The power planes have been arranged in a pattern to
simplify routing and minimize crosstalk on the circuit board.
The isolation region between two voltage planes must be at
least 0.254mm if they are in the same layer of the circuit board.
( S e e Fi g u re 7 9 o n p a g e 2 3 0 . ) I n o rd e r t o m a i n t a i n a
low-impedance current sink and reference, the ground plane
must never be split.
Although the AMD-K6 has two separate supply voltages, there
are no special power sequencing requirements. The best
procedure is to minimize the time between which V
are either both on or both off.
CC3
.
Power and Grounding
CC2
, 32 V
CC3
, and 68 V
CC2
and V
CC3
AMD-K6
provides the I/O voltage.
SS
CC3
pins on the AMD-K6
. V
®
CC2
Processor Data Sheet
CC2
, V
provides the
CC2
CC3
, and V
and V
229
CC2
CC3
SS