W83310DS/DG
PRELIMINARY
5. Application Circuit
- W83310DS/DG for DDR SDRAM Application
2.5VREF
VRAM
U1
C1
1
2
3
4
8
7
6
5
VIN
VREF2
ENABLE
VCTRL
R1
1K
1000u
GND
VREF1
ENABLE
(0:DISABLE
1:ENABLE)
3VDUAL
VOUT BOOTSEL
DDRVTT
R2
1K
C2
10u
C5
0.1U
W83310DS
C3
1u
C4
1500u
- W83310DS/DG for Intel® Springdale GMCH_VTT Application
CPU_VTT
2.5VREF
GMCH_VTT
R1
R
VCC2.5
C1
U1
1
2
3
4
8
7
6
5
VIN
VREF2
ENABLE
VCTRL
R2
R
1000u
GND
VREF1
PWOK
VCC3
VOUT BOOTSEL
W83310DS/DG
GMCHVTT
R3
R
C2
10u
C5
0.1U
C3
1u
C4
1500u
BOOTSELECT
BOOTSELECT=0 GMCHVTT=1.45V for Intel® NORTHWOOD CPU
BOOTSELECT=1 GMCHVTT=1.225V for Intel® PRESCOTT CPU
R1: R2: R3 = 4.66: 1.00: 5.44
Ω
Ω
Ω
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3
Publication Release Date: 2005/May
Revision 0.9
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