Intel VC820 - Desktop Board Motherboard Design Manual page 215

8 7
FWH
D
VCC3_3
C300
C
R305
24 S66DETECT
R306
24 P66DETECT 0K
0K
For drive side detection, stuff R304,R307. No stuff R305,R306.
For host side detection, stuff R304,R305,R306,R307.
B
A
8 7
6
VCC3_3
Do not tie Vpp to 12V. Vpp should be tied
to VCC3_3 for onboard programming.
C305
7
R299
0K
8,10,13,14,18,21,22,23,24
R300
R303
8.2K
8.2K
VCC3_3
VCC3_3
R308
WPROT
4.7K
JP21
Top Block Lock
TBLK_LCK
FW H
OUT
IN
6
5 4
VCC3_3
U16
1 40
NC1 GNDA
R296
FWH_IC 2 39
IC VCCA
8.2K 3 38
NC3 FWH4
4 37
NC4 INIT#
5 FWH 36
NC5 RFU36
6 35
NC6 RFU35
R298
FGPI4 7 34
FGPI4 RFU34
8.2K 8 33
NC8 RFU33
FWHPCLK 9 32
CLK RFU32
10 31
VCC10 VCC31
VPP_R 11 30
VPP GND30
PCIRST# 12 29
RST# GND29
13 28
NC13 FWH3
14 27
NC14 FWH2
FGPI3 15 26
FGPI3 FWH1
FGPI2 16 25
FGPI2 FWH0
FGPI1 17 24
FGPI1 ID0
FGPI0 18 23
FGPI0 ID1
19 22
WP# ID2
20 21
TBL# ID3
JP21
Locked
Unlocked*
5 4
3 2
C301 C298 C297 C308
LFRAME#/FWH4
11,14
HINIT#
4,6,10,34
LAD3/FWH3
11,14
LAD2/FWH2
11,14
LAD1/FWH1
11,14
LAD0/FWH0
11,14
TITLE: INTEL(R) 820 CHIPSET DUAL PROCESSOR CUSTOMER REFERENCE BOARD
FWH
PCD PLATFORM DESIGN
R
1900 PRAIRIE CITY ROAD
FOLSOM, CALIFORNIA 95630
3 2
1
D
C
B
A
REV:
3.03
DRAWN BY: PROJECT:
LAST REVISED: SHEET:
11-29-1999_14:46 12 OF 38
1