Samsung SCH-A205 Service Manual page 43

9-2 Logic Circuit Diagram (2)
RX_AUDIO
U230-1
TC75W56FU-TE12L
8
3
1
SEND_END
2
4
U230-2
TC75W56FU-TE12L
6
7
EAR_DET R232
5
100K
J210
EPJ1-5-A-D1
2
4
5
3
1
R262
0
MIC+
C262
NC
TX_AUDIO
CONFIDENTIAL
SAMSUNG Proprietary - Contents may change without notice
C274 R273
100NF 0
C273
1UF
V_TCXO +3.0EAR +3.0AUD
R252
R253
0
NC
+3.0EAR
R270
0
R230
C230
220K
100NF
C200
10UF
C231
R231 6.3V
2.2K
2.2NF R233
100K
R260
C260
2.2K 100NF
R261
0
C205
100NF
SPK+
C271
47PF
C272
47PF
R263
330K
C263
R264
C264 100NF
22K
NC
V_DC
3
D240
DAN202UT106
1 2
BUZZER-
3
Q241 2
DTC323TU-T106
1
TX_DATA2
RX_DATA2
DSR
RX_AUDIO
C_F
TX_AUDIO
TD
RD
HP_PWR
HP_PWR
RI
CD
V_F
RTS
V_BATT
V_BATT
CTS
DTR
C_F
C275
6.3V 1UF
+3.0V
33UF +3.0AUD
C270
C201
C202
100NF
100NF
32 31 30 29 28 27 26 25 R201
100K
1 24
MBIAS PLLVSS
2 23
MIC1P VSS
3 22
MIC1N MCLK
U200
4 21
MIC2P /RESET
TWL1103PBSR
5 20
MIC2N PWRUPSEL
6 19
REXT BUZZCON
C206
R202
7 18
100NF NC1 PCMSYN
100K
8 17
AVSS PCMCLK
9 10 11 12 13 14 15 16
R200
10K
+3.0V
U210
AT24C256-10UI-2.7-T.R
V_DC
1
8 R210 +3.0V Q220
A0
VCC
NC
MMBT2907A
2
7
A1 WP
3 SCL 6
A2 SCL
4
5
GND SDA
SDA
C210 R220
3.9K
100NF
+3.0V
3
Q221
2
VIBRATOR
DTC114EE/TR
1
Q240
MMBT2222AWT1
R240
56
3
1
RINGER_ON
2
C290 C291
470PF 470PF
R281 R280
100
100
1 3 4 5 5 4 3 1 5 4 3 1
L280
ACZ1005M-152-T
C280 C281 C282
2.2NF 10NF 10NF
2 2
2
C284 C286
1UF 33PF
ZD200
ZD220
ZD210
SMF05.TB
SMF05.TB
SMF05.TB
SPK-
SPK+
TPS76930DBVR
_RESIN
1
V_DC
2
C250
100NF 3
PCM_SYNC
PCM_CLK
PCM_DIN
PCM_DOUT
CODEC_SCL
CODEC_SDA
V_DC
Q222
R222
MMBT2222AWT1
NC
MOTOR
R221
LED_ON
C220 1K
3
1
KEYLED_ON
1UF
10V 2
R223
R224 R225
3.3K 36 36
J200
1000-0024-301
1
RESERVED0
2
RESERVED1
3
DSR
4
CHG+
5 CHG+
6
NC
7
RX_AUDIO
8 GND1
9
C/F1
10
GND2
11
TX_AUDIO
12
GND3
13
DP_RX_DATA
14
DP_TX_DATA
15
HP_PWR
16
RI
17
CD
19
GND4
20
RTS
21
VBATT1
22
VBATT2
23
CTS
24
DTR
25
GND5
26
C/F2
27
V/F2
28
VBATT3
L281 29
NC
ACZ1005M-152-T 30 NC
C287 C288 C289
1UF 33PF 100NF
U250
OUT 5
IN
+3.0AUD
GND
4
_EN NC/FB
C252
C251
10UF
NC
6.3V
9-2