Intel VC820 - Desktop Board Motherboard Design Manual page 228

8 7
USB Connectors
VCC3_3
D
AC97_OC#
17
VCC3_3 VCC5
C102
0.1UF
C
10K
OC#0 OC#0_RC
11
R87
VCC3_3
C109
0.1UF
10K
OC#1
11
R97
C120
VCC3_3
0.1UF
B
AGP_OC#
21
A
8 7
6
USBPWR1_F
Do Not
Stuff
USBP0N
11
USBP0P
11
U7
C239
TPS2042
2 7
IN OUT1
47PF
8 6
OC#1 OUT2
5 3
OC#2 EN#1
1 4
GND EN#2
OC#1_RC
USBPWR2_F
Do Not
Stuff
R243
USBP1N
11
15
R244
USBP1P
11
15
C244 C245
47PF 47PF
15 ohm resistors and 47pf caps should be within 1" of ICH
6
5 4
L11
2 1
C99 C44
68UF-TANT 0.1UF
C98, C99 must have low ESR.
R240
USBD0N_R
15-1%
R242
USBD0P_R
15-1%
Do Not
C241
Stuff
47PF
AC97_USB+
AC97_USB-
L10
2 1
C98 C43
68UF-TANT 0.1UF
USBP1N_R
USBP1P_R
5 4
3 2
USBV0
R377
USBD0N
0K
R378
USBD0P
0K
USBG0
1
C38
17
17 470PF 2
USBV1
R46
USBD1N
0K
R44
USBD1P
0K
USBG1
1
Do Not
C37
Stuff
470PF 2
USBAGP+
21
USBAGP-
21
TITLE: INTEL(R) 820 CHIPSET DUAL PROCESSOR CUSTOMER REFERENCE BOARD
USB CONNECTORS
PCD PLATFORM DESIGN
R
1900 PRAIRIE CITY ROAD
FOLSOM, CALIFORNIA 95630
3 2
1
D
J3
C
USB_STK
1
VCC0
2
DATA0-
3
DATA0+
4
GND0
5
VCC1
6
DATA1-
7
DATA1+
8
GND1
Place caps close to connector.
C39-C42 for test and debug only.
B
A
REV:
3.03
DRAWN BY: PROJECT:
LAST REVISED: SHEET:
11-29-1999_14:46 25 OF 38
1