
Date: March 29, 1996 Sheet 4 of 23
Size Document Number
REV
B
ElanSC300/310 Evaluation Board
2.2
Title
XTAL,SWITCHES,LOOP FILTER COMPONENTS,SPEAKER
AMD Proprietary/All Rights Reserved
(800) 222-9323
Austin, Texas 78741
5204 E. Ben White Blvd.
(C) Advanced Micro Devices, Inc.
RESDRV
VCCSYS5
R385
67K
RESDRV
TR
2
CV
5
Q
3
DIS
7
THR
6
R
4
V
C
C
8
U60
*555 TIMER
R386
0
Install this resistor & remove the 555 Timer when using ELAN rev B3.
ERESDRV
R391
*67K
C241
*40pF
ERESDRV
VCC5
11
10
1
4
U37E
74HCT04(V5)
GND
Note: (ElanSC300 only)
GND
GND
C236
*.01uF
C237
*.1uF
VCCSYS5
GND
C235
200pF
when exiting uPower OFF mode which could cause some issues. That is the reason for this one-shot.
The 555 Timer is configured to function as a one-shot. ElanSC300 revs B1 & B2 deliver a short RESDRV pulse
The ElanSC300 rev B3 device will address this issue & the one-shot is not needed.
- ElanSC300 only -
R17
0
C19
*0.47uF
R15
0
C24
*0.47uF
NOTE
ELAN pins to minimize trace length.
Place these componments close to the
R16
0
C22
*0.47uF
C18
*0.47uF
LF2
LF3
LF1
LF4
LF1
LF2
LF3
LF4
R14
0
R21
0
C28
*0.47uF
R19
0
C27
*0.47uF
C32
*0.47uF
NOTE
Place these componments close to the
ELAN Socket pins to minimize trace length.
R20
0
C30
*0.47uF
SLF1
SLF2
SLF3
SLF4
SLF1
SLF2
SLF3
SLF4
R18
0
GND
Video
C29
0.47UF/5%
PLL
PLL
Low Speed
C26
0.47UF/5%
PLL
Intermediate
C31
0.47UF/5%
ElanSC300 PGA Socket Loop Filters
PLL
High Speed
C33
0.47UF/5%
GND
Video
C21
0.47uF/5%
PLL
PLL
Low Speed
C17
0.47uF/5%
PLL
Intermediate
C23
0.47uF/5%
ElanSC300/310 QFP Chip Loop Filters
PLL
High Speed
C25
0.47uF/5%
GND
R384
*16M
1
4
2
3
X3
*32.768KHz
C233
*27PF
C234
*27PF
P32KINR
P32KOUT
32KHz Crystal (PGA)
P32KIN
P32KINR
P32KOUT
R383
*33
BZ1
BUZZER(V5)
SPKER
SPKER
RESUME#
R11
33
R223
33
C200
0.1UF
RESUME#
VCC5
RESRC#
R10
100
C14
0.1UF
RESIN#
R381
0
1
2
D1
RLS4148
R13
390K
OVCC3
C20
2.2uF
RESIN#
R382
0
GND
Reset Switch
SW2
SW PBNO
RESET
SW1
SW PBNO
SUS/RESUME
Suspend/Resume Switch
GND
GND
System Speaker
32KIN
32KOUT
R216
33
32KINR
32KINR
32KOUT
32KHz Crystal (QFP)
GND
C15
27PF
C16
27PF
1
4
2
3
X1
32.768KHz
R12
16M