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AMD Sempron™ Processor Model 10 with 256K L2 Cache Data Sheet
VID[4:0] Pins
VREFSYS Pin
74
The VID[4:0] (Voltage Identification) outputs are used to
dictate the V
CC_CORE
strapped to ground or left unconnected on the processor
package. The VID[4:0] pins are pulled up on the motherboard
and used by the V
CC_CORE
The VID codes and corresponding voltage levels are shown in
Table 23.
Table 23. VID[4:0] Code to Voltage Definition
V
VID[4:0]
CC_CORE
00000
1.850
00001
1.825
00010
1.800
00011
1.775
00100
1.750
00101
1.725
00111
1.675
01000
1.650
01001
1.625
01010
1.600
01011
1.575
01100
1.550
01101
1.525
01110
1.500
01111
1.475
For more information, see the "Required Circuits" chapter of
the AMD Athlon™ Processor-Based Motherboard Design Guide,
order# 24363.
VREFSYS (W5) drives the threshold voltage for the system bus
input receivers. The value of VREFSYS is system specific. In
addition, to minimize V
include decoupling capacitors. For more information, see the
AMD Athlon™ Processor-Based Motherboard Design Guide, order#
24363.
Pin Descriptions
voltage level. The VID[4:0] pins are
DC/DC converter.
(V)
V
VID[4:0]
10000
10001
10010
10011
10100
10101
10111
11000
11001
11010
11011
11100
11101
11110
11111
noise rejection from VREFSYS,
CC_CORE
31994A —1 August 2004
(V)
CC_CORE
1.450
1.425
1.400
1.375
1.350
1.325
1.275
1.250
1.225
1.200
1.175
1.150
1.125
1.100
No CPU
Chapter 10
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