- 7 -
SCHEMATIC DIAGRAM
UD-503
UD-503
1
2
3
4
5
6
7
8
A
B
C
D
E
Z
MAIN PCB (6/6)
GNDD
1
2
3
4
5
6
7
8
WRITER PH
NC
/RESET
RXD
+3.3VD
TXD
CLK_w
FLMDO
Target Board ZR
FLMDO
+3.3VD
/RESET
CLK_d ---*
TXD
RXD
GNDD
CLK_w
/RST_IN ---*
FLMD0
GND
RxD-W_TxD-u
VDD
TxD-W_RxD-u
CLK
DATA
RST_OUT
RST_IN
For Debug
G 1
S 2
D 3
For OLED FH1602BW
Guarding
From MAIN
Normally 5V input 3.23V
Detect 4.3V VCC 2.78V
250V 3.0V
240V 2.9V
200V 2.6V
135V 3.1V
120V 2.8V
105V 2.5V
110V 3.1V
100V 2.8V
902V 2.6V
ENC_VR_A
EEP_CS
CLK_d
FLMD0
/RESET
CLK_w
/RST_IN
ENC_VR_B
ORS
BD3
BD4
OLEDE
BD5
BD0
BD6
BD1
BD7
BD2
NET_P_ON
BD1
BD4
BD7
BD2
ENC_SEL_B
/ENTER
BD5
BD0
BD6
BD3
ORS
RCDATA
OLEDE
/MENU
ENC_SEL_A
RCDATA
EEP_CS
ENC_VR_A
ENC_VR_B
/MENU
RCDATA
/ENTER
ENC_SEL_B
ENC_SEL_A
TX
RX
/NET_P_ON
/RST_IN
GNDD
GNDD
P5V
GNDD
P3V3
P3V3
P3V3
GNDD
P3V3
P3V3
GNDD
GNDD
GNDD
GNDD
GNDD
GNDD
GNDD
GNDD
GNDD
GNDD
P3V3
P3V3
P5V
GNDD
GNDD
GNDD
GNDD
GNDD
GNDD
GNDD
GNDD
P3V3
P3V3
GNDD
P3V3 P3V3
P3V3
P3V3 P3V3
GNDD
GNDD
GNDD
GNDD
P3V3
GNDD
GNDD
GNDD
GNDD
P3V3
GNDD
GNDD
GNDD
GNDD
GNDD
GNDD
SDI
4
SCK
4,5
SDO
4,5
TX
2,
3
RX
4
/NET_P_ON
4
POWER_ON
3,4,
5
/NETINT
4
USB_MUTE
4
USB_XINT
4
NET_P_ON
4,
5
/HP_DET_
L
4
/HP_DET_
R
4
I2C_SCL
1,4
I2C_SDA
1,4
/FPGA_CS
4,
5
/NET_C
S
4
/VOL_CS
4
/CTRL_CS
4
DIR_IN
T
1
S50K_IN
2
ANALOG_IN
4
/DAC_C
S
4
NET_MUTE
4
nPCM_DSD
5
UD_PON
2
TP59
L59
BLM18PG471SN1
Q9
2SAR543R
L58
BLM18PG471SN1
R362
47
R325
10K
C137
0.1U
C138
0.1u
U28
uPD78F0527AGB-GAG-AX
P140/PCL/INTP6
1
P120/INTP0/EXLVI
2
P41
3
P40
4
RESE
T
5
P124/XT2/EXCLKS
6
P123/XT1
7
FLMD
0
8
P121/X1/OCD0
A
10
REGC
11
VSS
12
VD
D
13
P60/SCL0
14
P61/SDA0
15
P62/EXSCL0
16
P63
17
P77/KR7
19
P76/KR6
20
P75/KR5
21
P74/KR4
22
P73/KR3
23
P72/KR2
24
P71/KR1
25
P70/KR0
26
P32/INTP3/OCD1
B
27
P31/INTP2/OCD1
A
28
P30/INTP
1
29
P17/TI50/TO5
0
30
P16/TOH1/INTP
5
31
P15/TOH0
32
P14/RxD6
33
P13/TxD6
34
P12/SO10
35
P11/SI10/RxD0
36
P10/SCK10/TxD0
37
AVref
38
VSS
39
ANI7/P27
40
ANI6/P26
41
ANI5/P25
42
ANI4/P24
43
ANI3/P23
44
ANI2/P22
45
ANI1/P21
46
ANI0/P20
47
P130
48
P03
49
P02
50
P01/TI010/TO00
51
P00/TI000
52
P122/X2/EXCLK/OCD0
B
9
P33/TI51/TO51/INTP4
18
C136
1000P
TP78
R400
NT:1.5K UD:8.2K
TP60
R339
10K
R358
47
R368
47
R364
47
TP89
L57
BLM18PG471SN1
R321
47
R381
47
TP63
R361
3.3K
R365
47
R355
47
R357
47
R329
47
C123
1000P
TP79
R317
47
TP61
R348
47
L73
BLM18PG471SN1
U26
BR93L46RF-W
CS
1
SK
2
DI
3
DO
4
GND
5
NC
6
NC
7
VCC
8
L70
BLM18PG471SN1
R398
UD:0 NT:22K
R335
47
TP64
TP76
C126
1000P
L61
BLM18PG471SN1
L72
BLM18PG471SN1
R363
3.3K
R350
47
L47
BLM18PG471SN1
Q7
2SC4081
1
3
2
TP62
TP83
R347
47
C131
0.1U
TP65
TP84
R382
47
C130
0.1U
L62
BLM18PG471SN1
L69
BLM18PG471SN1
R376
10K
R399
22K
TP66
C122
1000P
L48
BLM18PG471SN1
TP95
L54
BLM18PG471SN1
R334
47
R333
47
L65
BLM18PG471SN1
R372
47
R338
47
TP91
U27
SN74LVC2G125DCT
1OE
1
1A
2
2A
5
VCC
8
GND
4
2Y
3
1Y
6
2OE
7
C121
1000P
L49
BLM18PG471SN1
R370
10K
R343
47
R346
47
L63
BLM18PG471SN1
R351
47
TP93
R322
47
TP87
R387
10K
L50
BLM18PG471SN1
R359
47
L71
BLM18PG471SN1
R341
10K
L51
BLM18PG471SN1
R354
47
R342
47
R401
330 0805
C140
10U
C120
0.1U
C132
0.1U
R349
47
TP81
L55
BLM18PG471SN1
TP92
R340
10K
R337
47
R328
47
R386
10K
R383
47
R402 1K
R330
47
R374
47
R332
47
TP82
C128
1U
R367
47
R379
10K
R366
47
TP94
L68
BLM18PG471SN1
L56
UD:BLM18PG471SN1 NT;NM
R331
47
TP74
Q8
RTF020P02
R384
47
L46
BLM18PG471SN1
TP98
R388
4.7K
R356
47
R375
47
L60
BLM18PG471SN1
R373
47
TP90
R360
47
C119
1000P
L52
BLM18PG471SN1
C124
10U
R316
10K
L66
BLM18PG471SN1
U30
BA033FP-E2
IN
1
OU
T
3
NC
2
GN
D
FI
N
C134
1000P
L45
BLM18PG471SN1
R344
47
TP75
C118
0.1U
R327
10K
R380
47
C117
1000P
TP80
U29
BD45285G
ER
1
SUB
2
GND
3
VOUT
4
VDD
5
P22
B14B-PH-SM4(LF)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
C129
1000P
R352
47
L53
BLM18PG471SN1
R323
10K
R345
47
R320
47
C125
0.1U
D19
N.M.(1SS355)
R369
47
R391
10K
L64
BLM18PG471SN1
R318
47
TP88
C127
1000P
R389
1K
R324
10K
C133
1000P
R315
10K
TP97
C139
0.1U
L67
BLM18PG471SN1
R326
22
TP77
R336
47
P17
B10B-ZR-SM4-TF
1
2
3
4
5
6
7
8
9
10
R319
47
TP96
C141
0.1U
R353
47
P20
B9B-ZR-SM4
1
2
3
4
5
6
7
8
9
R385
10
R377
47
R371
47
R378
10K
TP85
C135
1000P
TP86
