Intel 815 - Page 178

5
5
4
4
3
3
2
2
1
1
D D
C C
B B
A A
Clock Synthesizer
Notes:
Place all decoupling caps as close to VCC/GND pins as possible
PCI_0/ICH pin must go to ICH.
This clock cannot be turned off through SMBus
CPU_ITP pin must go to ITP
Only CPU_ITP can be turned off through SMBus
INTEL(R) 82815 CHIPSET CUSTOMER REFERENCE BOARD
CLOCK SYNTHESIZER
40
1.0
3-26-01
5
Platform Apps Engineering
1900 Prairie City Road
Folsom, CA 95630
REV.
R
Last Revision Date:
Sheet:
of
Title:
int
e
l
MEMV3
PCIV3
XTAL_OUT
XTAL_IN
3V66_0
3V66_1
PCI_0
PCI_1
PCI_3
PCI_4
PCI_5
PCI_6
AGP
USB_1
L_CKVDDA
CPU_0_1
CPU_2
APIC_0
DRAM_0
DRAM_1
DRAM_2
DRAM_3
DRAM_4
DRAM_5
DRAM_6
DRAM_7
MEMCLK0
MEMCLK1
MEMCLK2
MEMCLK4
MEMCLK5
MEMCLK6
MEMCLK7
DCLK
SEL1_PU
L_VCC2_5
REFCLK
USB_0
U10D_R292
R67_U10D
U10D_R293
USBV3
MEMCLK3
APIC_1
ICH_CLK1413
R_REFCLK4,7
ICH_3V6613
PCLK_0/ICH12
PCLK_115
PCLK_316
PCLK_417
PCLK_529
PCLK_614
AGPCLK_CONN9
USBCLK13
DOTCLK8
GMCH_3V668
APICCLK_CPU 4
APICCLK_ICH 12
CPUHCLK 4
GMCHHCLK 6
ITPCLK 4
DCLK_WR 7
MEMCLK[7:0] 10,11
CK_PWRDN# 35
CK_SMBCLK 25
CK_SMBDATA 25
FREQSEL 4
SIO_CLK1415
USB_CLK19
HUBPRB_3V6639
VTTPWRGD1231
TUAL54,7,31
VCC_CLK
VCC_CLK
VCC_CLK
VCC_CLK
VCC2_5
VCC3SBY
VCC3_3
VCC3_3
VCC_CLK
U10D
SN74LVC08A
13
12
11
147
CK-815
2-DIMM
U4
CK_815_2DIMM
3
4
1
7
8
12
13
15
16
18
19
20
9
25
26
22
23
55
54
52
50
49
46
45
43
42
40
39
37
36
34
32
31
30
29
28
51
53
56
48
2 10 11 21 27 33 38 44
5 6 14 17 24 35 41 47
XTAL_IN
XTAL_OUT
REF0
3V66_0
3V66_1
PCI_0/ICH
PCI_1
PCI_2
PCI_3
PCI_4
PCI_5
PCI_6
AGP
USB_0
USB_1
VDD_A
VSS_A
APIC_0
APIC_1
CPU_0
CPU_1
CPU_2/ITP
SDRAM_0
SDRAM_1
SDRAM_2
SDRAM_3
SDRAM_4
SDRAM_5
SDRAM_6
SDRAM_7
DCLK
PWRDWN#
SCLK
SDATA
SEL1
SEL0
VDD2_5[0]
VDD2_5[1]
VSS2_5[1]
VSS2_5[0]
VDD3_3[0] VDD3_3[1] VDD3_3[2] VDD3_3[3] VDD3_3[4] VDD3_3[5] VDD3_3[6] VDD3_3[7]
VSS3_3[0] VSS3_3[1] VSS3_3[2] VSS3_3[3] VSS3_3[4] VSS3_3[5] VSS3_3[6] VSS3_3[7]
C144
22uF
12
C147
0.001uF
12
C146
0.1uF
12
R67
33
1 2
R64
10
1 2
R65 10K
1 2
C158
0.1uF
12
C157
0.001uF
12
C156
0.1uF
12
C159
0.001uF
12
R44 8.2K
1 2
R71 33
1 2
R69 22
1 2
R68 22
1 2
L14A
1 2
R76 33
1 2
R75 33
1 2
R73 33
1 2
R292
10
12
R79 10
1 2
R70 33
1 2
R78 33
1 2
R77 33
1 2
R80 33
1 2
R293
1K
12
Q27
MOSFET N
C109
0.001uF
12
C108
0.1uF
12
C149
0.1uF
12
C107
0.001uF
12
C150
0.001uF
12
C101
0.1uF
12
C100
4.7uF
12
C102
0.001uF
12
C153
0.001uF
12
L15A
12
C106
22uF
12
C151
0.1uF
12
L12A
1 2
R338
130
1 2
R339
0
1 2
R66 10
1 2
C152
0.1uF
12
L11A
1 2
C154
0.1uF
12
C155
22uF
12
L16A
1 2
R38 33
1 2
R39 33
1 2
R42 33
1 2
R40 33
1 2
R41 33
1 2
Q28
MOSFET N
R47 22
1 2
R46 22
1 2
R45 22
1 2
R43 22
1 2
R51 22
1 2
R50 22
1 2
R49 22
1 2
R48 22
1 2
R52 22
1 2
R74
33
1 2
Y1A
XTAL
14.318MHz
1 2
C143
18pF
1 2
C145
18pf
1 2