Icom UT-115 service manual

SECTION 14 UT-115 (OPTIONAL UNIT)

14-1 BOARD LAYOUT

• TOP VIEW

14 - 1

125

26

1

10

1

8

16

9

20

11

50

51 75

76

100

• BOTT OM VIEW

1

1

12

24

13

1

116

17

32

33 48

49

64

4

8
5

4

8

5

PTTIN_C1

15

to the IC-2200H

LOGIC unit J4

30

16

J301

PTTOUT

DMOD

AMODIN

F_RXD

BUSY_C

RES

NC
NC
NC

NC
GND
GND

P01

NC

AGND

5V

VCC_8V

TXD
232_TX
232_RX
RMUTE
FMDET

DAFOUT

REFMOD

NC

FLASH
RXD_2_C
TXD_2_C

NC

14-3 BLOCK DIAGRAM

FOR FM_TRANCEVER
OPTION CONNECTOR

BUFF

F_RXD
RES
TXD

TXD_2
RXD_2

232_RX
232_TX

REFMOD

DMOD

FMDET

DAFOUT

AMODIN

5V

APWR

3.2V
REG

3.3V
REG

+5V
CTRL

BUFF

IC251B
NJM2115

IC251A
NJM2115

BUFF

BUFF

IC253B
NJM13404

IC253A
NJM13404

RS-232C_DATA

FOR FM_TRANCEVER CPU

FLASH WRITER

LEVEL
CONVERT

Q305 XP4312
Q306 XP4312

IC351
MAX3226

RS-232C

RESET

MODEM

2.4576MHz

CPU

IC151
AMBE-2020

DSP
CODEC

LINEAR
CODEC

IC50
AD73311

Q400 2SA1586
Q401 DTC144

PSAVE

+3V
CTRL

3.3V

3.3V

5V

X101
CR-708

INV

IC101
TC7SHU04

16.384MHz

9.8304MHz

X201
CR-760

3.2V

IC204
HD64F3687

IC203
S-80928CNMC

IC252
CMX589AD5

Q50 2SA1586
Q51 DTC144

3.3V

PSAVE

IC2
R1111N321B

IC1
S-812C33AMC

VCC: 4.5

-

8.5V

J301

LINE
DATA BUS LINE

TX LINE
RX LINE

VOLTAGE LINE

Explanatory notes

14 - 2

14-2 SEMICONDUCTOR INFORMATION

• TRANSISTORS AND FET’S

• DIODES

2SA1586 GR DTC144EUA T106 XP4312

(Symbol: SG) (Symbol: 26_) (Symbol: 7T)

MA2S111 MA2S728

(Symbol: A) (Symbol: B)

B

E

C

B

C

E

AC AC

E1
B1
C2

C1
B2
E2

14-4 VOLGTAGE DIAGRAM

VOLTAGE LINE

Explanatory notes

TX LINE
RX LINE

12345678910111213141516171819202122232425

26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50

51525354555657585960616263646566676869707172737475

76

77

78

79

80

81

82

83

84

85

86

87

88

89

90

91

92

93

94

95

96

97

98

99

100

IC151
AMBE-2020

GND
CODEC_RX_CLK
CHAN_RX_CLK
CODEC_RX_STRB
CHAN_RX_STRB
CODEC_RX_DATA
CHAN_RX_DATA
CODEC_TX_CLK
CHAN_TX_CLK
GND
VDD
CODEC_TX_STRB
CHAN_TX_STRB
VDD
GND
CODEC_TX_DATA
CHAN_TX_DATA
NC
VDD
VDD
VDD
VDD
VDD
VDD
GND

CLOCK_MODE

GND

GND

VDDNCGND

VDDNCNCNCNCNCGND

VDD

GNDNCX1

X2/CLKIN

RESETN

RATE_SEL0

RATE_SEL1

RATE_SEL2

RATE_SEL3

RATE_SEL4

CHANN_SEL0

VDD

CHANN_SEL1

NC

SOFT_EN

BAUD_SEL0

BAUD_SEL1

SLIP_EN

SLEEP_EN

CODEC_SLE0

CODEC_SEL1

VAD_EN

VDD

GND

GND

VDD

NC

NC

NC

NC

NC

NC

NC

NC

NC

NC

GND

NCNCNCNCNC

NC

VDD

GND

GND

VDD

VDD

NCNCNCNCNCNCNC

EPR

NC

NC

VDD

ENCODER_EN

GND

IC204
HD64F3687

123456789101112131415

16

17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32

333435363738394041424344454647

48

49

50

51

52

53

54

55

56

57

58

59

60

61

62

63

64

P36
P37
P52/WKP2
P53/WKP3
P54/WKP4
P55/WKP5/ADTRG
P10/TMOW
P11/PWM
P12
P56/SDA
P57/SCL
P74/TMRIV
P75/TMCIV
P76/TMOV
P24
P63/FTIOD0

P62/FTIOC0

P61/FTIOB0

NMI

P60/FTIOA0

P64/FTIOA1

P65/FTIOB1

P66/FTIOC1

P67/FTIOD1

P85

P86

P20/SCK3

P21/RXD

P22/TXD

P23

P70/SCK3_2

P87

P71/RXD_2

P72/TXD_2

P14/IRQ0

P15/IRQ1/TMIB1

P16/IRQ2

P17/IRQ3/TRGV

P33

P32

P31

P30

PB3/AN3

PB2/AN2

PB1/AN1

PB0/AN0

PB4/AN4

PB5/AN5

PB6/AN6

PB7/AN7

AVCC

X2

X1

VCL

RES

TEST

VSS

OSC2

OSC1

VCC

P50/WKP0

P51/WKP1

P34

P35

IC50
AD73311ARS

1
2
3
4
5
6
7
8
9

10 11

12

13

14

15

16

17

18

19

20

VOUTP
VOUTN
AVDD1
AGND1
VINP
VINN
REFOUT
REFCAP
AVDD2
AGND2 DGND

DVDD

RESET

SCLK

MCLK

SDO

SDOFS

SDIFS

SDI

SE

IC252
CMX589AD5

1
2
3
4
5
6
7
8

9
10
11
12 13

14

15

16

17

18

19

20

21

22

23

24

XTAL
XTAL/CLK_RX
CLKDIVA
CLKDIVB
RX_HOLD
RXDCACQ
PLLACQ
RX_PSAVE
VBIAS
RXFB
RX_SIG_IN
VSS DOC2

DOC1

BT

TXO

TXE

TXP

TXD

RXD

RXC

TXC

S/N

VDD

IC351
MAX3226EAE

1
2
3
4
5
6
7
89

10

11

12

13

14

15

16

READY
C1+
V+
C1

­C2+
C2

­V

-

R1IN R1OUT

INVALID

T1IN

FORCEON

T1OUT

GND

VCC

FORCEOFF

J301

to the IC-2200H
LOGIC unit JJ4

PTTIN_C

PTTOUT

DMOD

AMODIN

F_RXD

BUSY_C

RES

GND

GND

P01

AGND

5V

TXD

232_TX

232_RX

RMUTE

FMDET

DAFOUT

REFMOD

CCS

FLASH

RXD_2_C

TXD_2_C

VCC_8V

3
2
1

4

5

IC1
S-812C33AMC-C2N-T2

VOUT
VIN
GND

NC

NC

4

IC2
R1111N321B

5

3

2

1

VDD
GND
CE

VOUT

NC

C2

10

C5

0.001

R400
100k

R401

5.6k

Q401
DTC144EU

C401

10

3.3V

3.3V

C8

0.1

C7

4.7

R2

22

C11

4.7

R1

47k

Q51
DTC144EU

R60
10k

R59

100k

Q50
2SA1586

L50
1µ

C5410C55

0.1

C333

0.001

C57

0.1

R51
1k

C51

0.022

R50

680

C50

0.1

DAFOUT

AGND

CP50

R52
100

C56

0.047

R58
0

ADIN

ADREF

C58

0.1

C150

1

C102

TZY2Z100A001

X101
CR-708

C103

7p

R101
1M

IC101
TC7SHU04FU

1

2

34

5

C104

0.1

R102
100

R103
1k

5

IC103
TC7S04FU

1

2

34

C106

0.1

R57
47k

-

+

­+

567

8

432

1

IC251

NJM2115V

ADREF

R53
47k

R54
47k

C53

0.1

AMODIN

R55

100k

ADIN

C250

0.1

R56
100

R252

100k

R251

47k

C252

1

MCLK

MCLK

R261

47k

R255

47k

R254

47k

R253

47k

R257

47k

R100

0

C255

1

R256 100k

C253 22p
R260
100k

R258
100k

C256

0.1

PSAVE

TXCK

RXCK

RXDT

TXDT

TXCK

RXCK

RXDT

TXDT

TXCK
RXCK
RXDT
TXDT

Q251
DTC144EU

ACQ

CP256
CP255

CP254

C257

0.027

C258

0.027

C259

0.0022

R262
22k

R264
100k

­+

-

+

567

8

432

1

IC253

NJM13404V

R269
33k

R267
100k

C261

0.1

C260
1

C262
1

CP252

CP251

1

2

3

5

4

IC254
TC4S66F

R268
390k

R270

47k

C263

0.1

DMOD

REFMOD

C351 0.22
C352 0.22

C353 0.22

C354 0.22

232_RX

R308

100

R309

100

232_TX

C355

0.1

C9

10

C10

0.1

C153

0.1

C154

0.1

ATXD

ACLK

ASTB

ARXD

AEPR

ARES

SCLK

SO

SEN

SI

C155

0.1

C156

0.1

D151
MA2S728

ARES

R1511kR152

47k

C152

0.1

C151

0.1

C157

0.1

C159

0.1

Q252
DTC144EU

DCEL

AEPR

RMUTE

Q202
DTC144EU

IC202
TC7SH08FU

51

2

34RXD

C201

0.1

F_RXD

FLASH

Q201
DTC144EU

NMI

P85

R206

1k

R201
1k

R2021kR203

4.7k

R204

4.7k

R205

4.7k

P86
P87
TXD

RES

1

2

6

5

43

Q306
XP4312

RXD_2

Q305
XP4312

1

2

6

5

43

Q301
DTC144EU

PTTIN

Q303
DTC144EU

Q302
DTC144EU

BUSY

PTTIN

AGND

DMOD

AMODIN

TXD

F_RXD

232_TX

232_RX

RES

RMUTE

FMDET

FMDET

DAFOUT

REFMOD

FLASH

RXD_2_C

RXD_2

TXD_2

TXD_2

L351
1µ

MCLK

ATXD

ACLK

NMI

ASTB

ARXD

ARES

MCLK

P85

P86

P87

RXD

TXD

R219

47k

R218

47k

RXD_2

TXD_2

P01

D152
MA2S111

TXCK

RXCK

RXDT

TXDT

PSAVE

BUSY

PTTIN

P01

CP216

R220 0

R221 0

R211

47k

C205

0.1

X201
CR-760
(9.8304 MHz)

C202

7p

C207

TZY2R200A001

C204

18p

4

IC203
S-80928CNMC

5

3

2

1

VDD

OUT

VSS

CD

NC

R209
1k

C206

0.01

R212

47k

R217

47k

R216

47k

C203

0.1

L201
1µ

C1

10

Q400
2SA1586

L151
1µ

CP101

ACQ

ACQ

APWR

TXD_2_C

PTTOUT_C

R318 100

R317 100

R315 100

R316 100

3.3V 3.3V

3.3V3.3V3.3V

3.3V 3.3V

APWR

APWRAPWR

APWR

PSAVE PSAVE

PSAVE

DCEL

DCEL DCEL

DCEL

PTTOUT_C

PTTOUT_C

VCC_8V

5V

VCC_8V

5V

VCC_8V

5V5V

VCC_8VVCC_8V

5V

VCC_8V

5V

5V

VCC_8V VCC_8V

5V

VCC_8V

5V 5V

VCC_8V

VCC_8V

AEPR

RMUTE_C

ACQ

RES

3.3V

PSAVE ON: L(0.0V)
PSAVE OFF: H(3.3V)

PSAVE OFF: L(0.0V)
PSAVE ON: H(3.3V)

3.2V

4.0-8.5V

PSAVE OFF: L(0.0V)
PSAVE ON: H(5.0V)

5.0V

3.2V

3.2V

4.7V

3.25V

TX: 350mVp-p

3.25V

3.25V
TX: 350mVp-p

PSAVE ON: L(0.0V)
PSAVE OFF: H(3.3V)

3.3V

3.3V

BUSY: H(3.3V)

RX: L(0.0V)
TX: H(3.3V)

RX: L(0.0V)
TX: H(3.3V)

3.3V

4.5-8.5V 5.0V

3.2V

14 - 3