
Date: March 29, 1996 Sheet 20 of 23
Size Document Number
REV
B
ElanSC300/310 Evaluation Board
2.2
Title
Power Switching
AMD Proprietary/All Rights Reserved
(800) 222-9323
Austin, Texas 78741
5204 E. Ben White Blvd.
(C) Advanced Micro Devices, Inc.
ORIGIN OF
VCC3
GND
R377
0
C228
*0.1UF
R378
1M
2
4
1
7
8
5
6
3
Q37
SI9956DY
GND
4
3
5
1
2
Q36
FMC2A
2
3
D16
RB400D
VCC5
VCC5
VCCSY253
VCC5
VCCSYS5
2
3
D15
*RB400D
GND
C254
0.01uF TANT
GND
C255
0.01uF TANT
VCC5
VCCSYS5
VCC1
2
3
D14
RB400D
GND
C253
0.01uF TANT
VCCMEM53
GND
C251
0.01uF TANT
GND
C252
0.01uF TANT
VCC1
VCCSY253
P5VOLT
ENLOCAL
SW_MEM53
R189
47K
SW_MEM35
OP5VOLT
4
5
6
1
4
U35B
74HCT32
4
3
5
1
2
Q32
FMC2A
4
3
5
1
2
Q34
FMC2A
GND
2
4
1
7
8
5
6
3
Q33
SI9956DY
R292
0
C214
*0.1UF
R293
1M
R305
0
2
4
1
7
8
5
6
3
Q35
SI9956DY
VCC1 PLANE
VCC3
P5VOLT
GND
C246
33uF TANT
VCC1
L7
1.2uH
ORIGIN OF
VCCSY253 PLANE
VCCSY253
C247
33uF TANT
GND
L8
1.2uH
P5VOLT
R170
0
2
4
1
7
8
5
6
3
Q7
SI9956DY
GND
C215
*0.1UF
R306
1M
P12VOLT
4
3
5
1
2
Q19
FMC2A
GND
ACIN
BL1#
BL2#
BL3#
BL4#
C145
0.1UF
GND
VCC5
R188
33
R186
10K
R187
10K
R180
100
R181
100
R182
100
R183
100
R179
100K
R178
10K
OP5VOLT
R184
10K
R185
10K
IRQ1
PIRQ1
GND
SW_MEM53
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
SW4
SW DIP-8
SW_BL1#
SW_BL2#
SW_BL3#
SW_BL4#
SW_ACIN
EIRQ1
EPIRQ1
EPIRQ1
EIRQ1
PIRQ1
IRQ1
ENFLISA#
Install JP28 on pins 1&2 if using micropower to keep DRAM powered up
ENCGA#
C144
0.1UF
GND
ENFLISA#
C140
0.1UF
C141
0.1UF
C142
0.1UF
GND
GND
VCC5
9
10
8
1
4
U42C
74HCT08(V5)
ENCGA#
C143
0.1UF
GND
GND
P5VOLT
4
3
5
1
2
Q17
FMC2A
GND
R167
1M
R169
1M
C132
*0.1UF
R172
0
2
4
1
7
8
5
6
3
Q9
SI9956DY
ORIGIN OF
OVCC3
VCCMEM53
VCCMEM53 PLANE
OP5VOLT
C248
33uF TANT
GND
L9
1.2uH
GND
R166
1M
C134
*0.1UF
R173
0
C135
*0.1UF
2
4
1
7
8
5
6
3
Q10
SI9956DY
GND
SW_MEM35
4
3
5
1
2
Q16
FMC2A
OP5VOLT
1 2 3
JP28
*HEADER 3
OP12VOLT
Install JP28 on pins 2&3 if not using micropower or if
while in uPower OFF mode.
DRAM is not required to be powered up in uPower OFF mode.
PMC1
P12VOLT
NBCD1#
VCC5
4
5
6
1
4
U42B
74HCT08(V5)
P12VOLT
VCC5
4
3
5
1
2
Q22
*FMC2A
ElanSC300 only
GND
R164
1M
R175
4.7K
C137
0.1UF
2
4
1
7
8
5
6
3
Q11
*SI9956DY
ElanSC300 only
VCC1CRD5
ORIGIN OF
VCC1CRD5 PLANE
VCC5
GND
P12VOLT
P5VOLT
SW_MEM35
4
3
5
1
2
Q18
FMC2A
GND
GND
R168
1M
C133
*0.1UF
R171
0
2
4
1
7
8
5
6
3
Q8
SI9956DY
ORIGIN OF
P5VOLT
VCC5
VCC5 PLANE
L10
1.2uH
Power Switching
C249
33uF TANT
GND
GND
R165
1M
R174
0
C136
*0.1UF
2
4
1
7
8
5
6
3
Q14
SI9956DY
P12VOLT
GND
P5VOLT 4
3
5
1
2
Q15
FMC2A
VCC2CRD5
ORIGIN OF
VCC2CRD5 PLANE
VCC5
GND
R162
1M
C138
0.1UF
R176
4.7K
2
4
1
7
8
5
6
3
Q12
*SI9956DY
ElanSC300 only
P12VOLT
VCC5
4
3
5
1
2
Q21
*FMC2A
ElanSC300 only
VCC5
1
2
3
1
4
U42A
74HCT08(V5)
PMC3
NBCD2#
LVDD#
ENCGA#
VCCSY253
4
5
6
1
4
U26B
74HCT32(SYS253)
P12VOLT
VCCSY253
If using ElanSC310, remove Q11-Q13 and Q20-Q22.
4
3
5
1
2
Q20
*FMC2A
ElanSC300 only
GND
R163
1M
R177
0
C139
*0.1UF
2
4
1
7
8
5
6
3
Q13
*SI9956DY
ElanSC300 only
VCCLCD5
VCC5
L11
1.2uH
ORIGIN OF
3
4
5
FMC2A
SOT-25
ROHM
VCCSYS5
VCCSYS5 PLANE
C250
33uF TANT
GND
1
2