
Date: June 6, 1996 Sheet 18 of 23
Size Document Number
REV
B
ElanSC300/310 Evaluation Board
2.2
Title
DC/DC Power
AMD Proprietary/All Rights Reserved
(800) 222-9323
Austin, Texas 78741
5204 E. Ben White Blvd.
(C) Advanced Micro Devices, Inc.
M12VOLT
1 2
JP37
*HEADER 2
RESIN#
OP12VOLT
1 2
JP36
*HEADER 2
R147
*330
GND
GND
GND
C119
0.1UF
C125
10UF/16V
C124
10UF/16V
GND
GND
C120
0.1UF
1
2
3
4
5
6
P25
PC POWER CONN
Burndy GTC6R-1
1
2
3
4
5
6
P26
PC POWER CONN
Burndy GTC6R-1
OP12VOLT
PM12VOLT
LVEE#
GND
GND
C122
0.1UF
C127
10UF/10V
PM5VOLT
GND
GND
C121
0.1UF
C126
10UF/10V
OP5VOLT
NOTE
VEE is controlled by VGALVEE# in Local bus mode.
VEE is off in ISA bus mode.
VEE is controlled by LVEE# in internal CGA mode.
VCC5
2
3
1
1
4
U41A
74HCT02(V5)
VCC5
VCC5
8
9
10
1
4
U41C
74HCT02(V5)
3
4
1
4
U37B
74HCT04(V5)
OP5VOLT
P5VOLT
GND
R388
100K
M5VOLT
2
1
3
Q24
PMBT3904
R277
1.5K
R387
100K
GND
R389
100K
R276
10K 4
1
5
2 3
8
6 7
Q23
SI9430DY
OP12VOLT
P12VOLT
2
4
1
7
8
5
6
3
Q26
SI9956DY
OVCC3
R280
1M
GND
C242
*10uF/20V
GND
4
3
5
1
2
Q25
FMC2
R279
0
C206
*0.1uF
P5VOLT
OP12VOLT
D18
*3.6V 1W
Add Wire:
R228
50K
2.) Cut short shape S108
3.) Add wire: to connect U40 pin 9
1.) Remove components: L1 and D18.
to ’OP5VOLT’ (cathode side of D18).
Rework Instructions:
regulation when in Suspend mode).
(To correct 3.3 Volt (VCC3) output
VCC5
5
6
4
1
4
U41B
74HCT02(V5)
VCC5
VCC5
1
2
1
4
U37A
74HCT04(V5)
ENCGA#
ENLOCAL
VGALVEE#
R159
100K
OVCC3
R283
100K
LX3
15
CS+
9
CS-
10
DHI
11
DLOW
12
FBN
8
VREF
5
PFO
4
GND
14
AGND
6
V+
16
SHDN
1
NEGON
2
3/5
3
FB3
7
LIN
13
U40
MAX722
ENVEE
R161
1M
R154
100K
OVCC3
GND
GND
BAT
CX130
75UF/6.3V
C130
75UF/6.3V
GND
R155
1
4
5
2 3
8
6 7
Q6
SI9400DY
1
2
S108
*SHORT
L1
*22UH/1A
1
2
D10
1N5817
GND
C129
100UF/6.3V
OVCC3
GND
GND
VCC3
R376
1M
GND
C243
*10uF/10V
GND
VEE
VEE
GND
C128
2.2UF/30V
GND
1
2
D11
1N5818
L2
47UH/0.25A
R157
1.5M/1%
R156
470
R160
110K/1%
C131
0.22UF
GND
C123
0.1UF
R158
330
1
2
3
Q3
2N2955
1
2
D13
RLR4001
RESDRV#
VCCSYS5
1
2
14
U8A
74HCT04(SYS5)
RESDRV
VCC1
R233
10K
VCC5
VCC5
D
2
Q
5
CLK
3
Q
6
P
R
4
C
L
1
V
C
C
1
4
U39A
74HCT74(V5)
P12VOLT
GND
GND
P5VOLT
OP12VOLT
4
3
5
1
2
Q27
FMC2
GND
R281
0
R282
1M
C207
*0.1uF
2
4
1
7
8
5
6
3
Q28
SI9956DY
VCCMEM53
SVCCMEM53
1
2
SOT-23
RB400D
R
O
H
M
3
GND
C244
*10uF/10V
ROMVPP
ICVPP1
ICVPP2
4
1
5
2 3
8
6 7
Q5
SI9430DY
P-MOSFET
2
3
D12
RB400D
VCC5
VCC5
VCCSYS5
GND
2
1
3
Q4
PMBT3904
P12VOLT
R152
1.5K
R153
1M
VDD
14
VPPIN
4
EN21
8
EN20
9
EN10
12
LOW2
10
GND
6
NC
2
VPPO1
1
VPPO2
7
VCC1
3
VCC2
5
LOW1
13
EN11
11
U36
*MIC2558(V5)
14-SOIC
ElanSC300 only
SD2
PGPA
VCC5
VCC5
D
2
Q
5
CLK
3
Q
6
P
R
4
C
L
1
V
C
C
1
4
U38A
*74HCT74(V5)
ElanSC300 only
SD1
SD2
PGPA
VCC5
PGPA
VPP1
VPP2
SD[0..15]
SD[0..15]
SD0
PGPA
VCC5
If using ElanSC310, depopulate U36 and U38.
D
12
Q
9
CLK
11
Q
8
P
R
1
0
C
L
1
3
V
C
C
1
4
U38B
*74HCT74(V5)
ElanSC300 only
RESDRV#
VPP1
VPP2
GND
P12VOLT
GND
GND
GND
C117
0.1UF
C118
0.1UF
Power Supply