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POWER/TIMER/USB CIRCUIT DIAGRAM
FROM SMPS
CN201
3.3V
1
3.3V
2
GND
3
12V_AUDIO
4
12V_LOADER
5
GND
6
5V_LOADER
7
5:14
P_CON
8
PWR_CTRL
GND
9
GND
10
5.3VA
11
5.3VA
12
-29VA
GND
13
GND
FD-
-29VA
14
FD+
FD-
15
FD+
16
C217
C218
C219
0.1uF
0.1uF
0.1uF
GND
GND
GND
F R O N T T I M E R I / F
TP219
R214
0
GND
23
TP218
R215
0
USB_P
22
TP217
USB_N
21
C244
C245
2pF
2pF
GND
20
TP216
PWR_CTRL_5.3VA
19
5.3VA
TP215
5.3VA
18
TP214
C254
FD-
FD-
17
(N.C)
GND
16
TP213
RXO
15
TP212
TXO
14
TP211
FD+
FD+
13
GND
12
R219
0
TP210
CEC
11
TP209
INST_OPEN
10
R299
2.2K
TP208
PWR_CTRL
9
TP207
D3
8
TP206
D2
7
C252
(N.C)
TP205
D1
6
C251
(N.C)
TP204
RESET#
5
TP203
A_MUTE
4
C253
(N.C)
TP202
-29VA
-29VA
3
L205
TP201
5V
5V
2
HB_102(2)
5V
1
CN202
GND
3.3V
+
CA201
330uF/16V
GND
12V_AUDIO
CA202
330uF/16V
12V_LOADER
GND
CA203
330uF/16V
HB_102(2)
IC201
R202
GND
G5627
10(2012)
5V_LOADER
1
VCC
VIN
2
REF
LX
CA204
3
GND
PGND
330uF/16V
4
FB
EN
GND
MAX. : 3A (max:2.4A)
5.3VA
TEMP. RANGE : -40~85
CA206
330uF/16V
GND
GND
* U S B D e s i g n & L a y o u t G u i d e *
1 . U S B D a t a D P / D N m u s t b e r o u t e d a s 1 0 0 o h m d i ff e r e n t i a l p a i r s .
2 . M a t c h Tr a c e l e n g t h o f D P / D N
3 . Tr a c e s p a c i n g i s s a m e a s t r a c e w i d t h .
4 . R o u t e d i ff e r e n t i a l p a i r s a b o v e g n d p l a n e a n d g n d p l a n e a r e n o t s p l i t u n d e r d i ff e r e n t i a l p a i r s .
USB_P
5 . Av o i d v i a a s p o s s i b l e a s y o u c a n .
USB_N
6 . Tr a c e s p a c i n g b e t w e e n D P / D N a n d o t h e r t r a c e s m u s t b e m o r e t h a n 5 t i m e s o f D P / D N t r a c e w i d t h .
7 . C o n s i d e r c u r r e n t u p t o 5 0 0 m A .
8 . C o n s i d e r a b r u p t U S B p o w e r s h o r t .
9 . U S B R R E F r e s i s t o r ( R 11 4 ) m u s t b e p l a c e c l o s e t o B C M 7 4 4 0 .
3.3V
PWR_CTRL_5.3VA
TIMER CIRCUIT
R228
N.C(10K)
T_RX
TIMER_RX
R221
N.C(150)
C249
T_RX
120pF
Q202
T_TX
N.C(2SK3018-T106)
R220
150
GND
3.3V
HDMI_CEC
10K
R229
A_MUTE
T_TX
TIMER_TX
R218
PWR_CTRL
150
C248
INST_OPEN
120pF
Q203
D2_CTL2
2SK3018-T106
GND
D2_CTL3
5.3VA
3.3V
RESET
RESET CIRCUIT
D2_CTL1
R223
N.C(10K)
R224
D202
N.C(10K)
N.C(RB501V-40)
R226
RESET
6.2K
Q201
N.C(2SK3018-T106)
GND
5.3VA
C226
10uF(2012)
L201
GND
C227
PWR_CTRL_5.3VA
10uF(2012)
1.1V
8
L202
7
10uH
6
GND
5
R204
2K
GND
GND
GND
*Msut be placed Inductor L202
*Must be placed sama plane as L202
R207
20K_1%(2012)
GND
IC203
TJ3965S-1.2V-3L
3.3V
GND
+
C241
CA209
C240
0.1uF
100UF/6.3V
0.1uF
GND
IC205
5V
GND
RESET#
C247
C246
0.1uF
NC
GND
GND
GND
CA207
[5.6VA TO 1.8V]
C231
100uF/16V
AOZ1021 (max 3A@1.8V. max : 2A)
22uF
IC202
AOZ1021
5.3VA
1
8
L203
HH_102(2)
PGND
LX
10uH
L204
2
7
VIN
LX
3
6
AGND
EN
4
5
FB
COMP
C232
0.1uF
R210
C234
15K
102 C233
OPEN
*Msut be placed Inductor L203
GND
*Must be placed sama plane as L203
PWR_CTRL_5.3VA
100K
R209
GND
IC204
1.2V
TJ3965RS-5.0V-5L
5.3VA
PWR_CTRL
R230
0(20K_1%)
+
CA210
ZD201
+
C242
220UF/6.3V
C243
GND
CA212
0.1uF
100UF/16V
0.1uF
GND
BZX84-C6V8
GND
2.5V
OPTION (EFUSE CIRCUIT)
1.8V
R217
1.5K_1%
R211
20K_1%
5V
BD370
R230 : 0 ohm
R231.2 : N.C
BD360
R230 : 20K ohm_1%
R231 : 6.2K ohm_1%
+
R232 : 390 ohm
CA211
220UF/16V
GND
2-3
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