User's Manual

17
AUDIO/MODEM RISER
R125
10K
11,15
AC_BITCLK
11,15
AC_SYNC
15
MONO_OUT
11,15
AC_SDATAOUT
15MONO_PHONE
JP2
3
2
1
PRI_DWN#
PRI_DWN_U
R68
4.7K
25
AC97_USB+
25
AC97_USB-
11
AC_RST#
U3
5
4
6
7
14
15
PRI_DWN_RST#
25
AC97_OC#
J8
A8
A11
A10
B6
A13
A5
A4
A3
B14
B13
B5
B4
A2
B3
A12
A9
A6
B22
B20
B16
B12
B10
B8
A22
A20
A18
A16
A14
B2
A1B1
A17B17
B19
B21
A19
A21
B18
B23 A23
B7 A7
B11
A15B15
B9
AC_SDATAIN1_R
R113
AC_SDATAIN0
11,15
AC_SDATAIN1
11
R108
10K
PCD PLATFORM DESIGN
REV:
DRAWN BY:
LAST REVISED:
PROJECT:
SHEET:
FOLSOM, CALIFORNIA 95630
1900 PRAIRIE CITY ROAD
87654321
A
B
C
D
12345678
D
C
B
A
TITLE: INTEL(R) 820 CHIPSET DUAL PROCESSOR CUSTOMER REFERENCE BOARD
3.03
OF 38
R
VCC12-VCC12
VCC3_3SBY
VCC3_3SBY
VCC3_3SBY
VCC5
VCC5VCC3_3
SN74LVC08A
AC’97_RISER
AMR_CONNECTOR
KEY
KEY
KEY
KEY
+12V
+3.3VD +3VDUAL/3VSBY
+5VD
+5VDUAL/5VSBY-12V
AC97_BITCLKAC97_MSTRCLK
AC97_RESET#
AC97_SDATA_IN0
AC97_SDATA_IN1
AC97_SDATA_IN2
AC97_SDATA_IN3
AC97_SDATA_OUT AC97_SYNC
AUDIO_MUTE# AUDIO_PWRDWN
(ISOLATED)GND[0]
GND[10]
GND[11]
GND[12]
GND[13]
GND[14]
GND[1]
GND[2]
GND[3]
GND[4]
GND[5]
GND[6]
GND[7]
GND[8]
GND[9]
MONO_OUT/PC_BEEP
MONO_PHONE
RESV[1]
RESV[2]
RESV[3]
RESV[4]
RESV[5]
RESV[6]
RESV[7]
S/P_DIF_IN
PRIMARY_DN#
USB+
USB-
USB_OC
0K
AC’97 Audio/Modem Riser
Audio Down JP2
Enable* 1-2
Disable 2-3