71
SCHEMATIC DIAGRAM
TH-D72A/D72E
X57-784 (A/3) 6/8
AD
AC
AB
AA
Z
3.3V
WXCTIN_A
WXCTIN_B
SQB
SMB
SMA
SQA
VOX_IN
KEY_I1
KEY_I0
KEY_O4
TXD_IGPS
/LCD_RST
GP_PS
/LCD_WR
REM
CNT_DT
DAC_EN
SAVE2
KEY_O1
KEY_O0
KEY_I4
RTC_SDA
KEY_IT
RTC_SCL
KEY_I2
KEY_I3
INTRTC
KEY_O4
KEY_I1
KEY_I0
KEY_O3
KEY_O2
Vbus_USB
MICM
SPM
TLEDB
TLEDA
RLEDA
ENC2
ENC1
TNC_RST
TXD_USB
RST_USB
PTT
AFB_S
SQ
TNC_WR
GPSLED
CON
TNC_RST
STA
S9600
32K_SW
TXD_S
RTS_USB
SET
BV
33M
33TNC_S
RXD_USB
VGPS
TAB_S
Vbus_DET
D[2]
D[3]
D[6]
A[0]
E2PSI
E2PCL
E2PSO
E2PCS
RLEDB
232B_S
AFM
PKD96M
TNC_CAR
TONE
CNT_CLK
CNVSS
PKTBND
VTX
/RST
DAC_RST
RTS_TNC
RXD_TNC
CTS_TNC
TXD_TNC
LCDCNT
BEEP
RXD_COM
TXD1
RXD1
33TNC_S
GP_ON
C_S
LAMP
KEY_O4
KEY_O3
KEY_O2
KEY_O1
KEY_O0
CTS_USB
/SUSPEND
33C
/LCD_CS
INT
RXD_IGPS
RXD_S
LDA
LDB
TXD_COM
33C
MICB_S
SKY_SW
DTMF
PTT
D[0]
D[1]
D[4]
D[7]
D[5]
E2PCS2
PSW
PKS_IN
BSFT1
DC_DET
R 8 8 9
0
C895
100p
C 8 9 4
1 0 0 0 p
X 7 0 2
11.0592MHz
C900
5p
R880
820
Q 7 2 3
RT1N441U-T111
R882
150k
R881
10k
R891
10k
CP49
C902
1000p
C901
1000p
CN721
CP68
CN724
CN725
C P 7 5
CP48
R862
470k
CP56
CP57
CP58
CP59
CP60
CP6
1
CP42
CP62
CP63
C907
1000p
C P 6 4
CP40
CP44
CP45
CP46
CP47
C P 5 2
C P 6 7
C P 5 3
C P 6 6
C P 6 5
C P 5 4
R 9 0 1
1 k
R892
0
C P 5 1
CP43
R893
1k
R894
1k
L709
C880
1000p
CN722
CN723
CP55
C968
1u
C969
1u
I C 7 3 7
5 F 3 6 5 1 T D F C
1
VREF
2
AVCC
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
XOUT
19
VSS
20
XIN
21
VCC
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
VCC
38
3 9
VSS
4 0
4 1
4 2
4 3
4 4
4 5
4 6
4 7
4 8
4 9
5 0
5 1
5 2
5 3
5 4
5 5
5 6
5 7
5 8
5 9
6 0
6 1
6 2
6 3
6 4
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
VSS
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
1 0 3
1 0 4
1 0 5
1 0 6
1 0 7
1 0 8
1 0 9
1 1 0
1 1 1
1 1 2
1 1 3
1 1 4
1 1 5
1 1 6
1 1 7
1 1 8
1 1 9
1 2 0
1 2 1
1 2 2
1 2 3
1 2 4
1 2 5
1 2 6
1 2 7
AVSS
1 2 8
R838
100k
R723
47k
CP76
R977
47k
R740
47k
CP80
R
728
1k
R
729
1
k
33M
SET
MAIN_WR
RST_S
M C U
SWITCH
CHG_TH
BSFT2
BSFT2
BSFT2
9600 TData
9600 TData
RST_S
RST_S
33TNC
1200 TData
1200 TData
PKD96M
TNC_CAR
TONE
CNT_CLK
SKY_SW
DTMF
BSFT1
BSFT2
CNT_DT
DAC_EN
CNVSS
PKTBND
VTX
BYTE
/RST
TAB_S
DAC_RST
RTS_TNC
RXD_TNC
CTS_TNC
TXD_TNC
LCDCNT
BEEP
RXD_COM
TXD1
RXD1
INT
LDA
TXD_COM
PKS_IN
DC_DET
SAVE2
KEY_O1
KEY_O0
KEY_I4
RTC_SDA
KEY_IT
RTC_SCL
KEY_I2
KEY_I3
INTRTC
KEY_O4
KEY_I1
KEY_I0
KEY_O3
KEY_O2
32K_SW
TXD_S
33TNC_S
GP_ON
C_S
LAMP
RXD_S
LDB
MICB_S
RST_S
TXD_IGPS
/LCD_RST
GP_PS
/LCD_WR
VGPS
D[2]
D[3]
D[6]
A[0]
E2PSI
E2PCL
E2PSO
E2PCS
/LCD_CS
RXD_IGPS
D[0]
D[1]
D[4]
D[7]
D[5]
E2PCS2
VCC
Vbus_USB
MICM
SPM
TLEDB
TLEDA
RLEDA
ENC2
ENC1
TXD_USB
RTS_USB
RXD_USB
RLEDB
232B_S
AFM
CTS_USB
PSW
WXCTIN_A
WXCTIN_B
SQB
SMB
SMA
SQA
VOX_IN
REM
RST_USB
SQ
TNC_WR
GPSLED
CON
TNC_RST
STA
S9600
Vbus_DET
/SUSPEND
PTT
CHG_TH
MAIN_WR
BV
SET
AFB_S
TX-RX UNIT (X57-784X-XX) (A/3) : CONTROL SECTION