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