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10.7MHz 49.97MHz 60dBuVemf 1kHz/3kHz MOD
5 6 1 2 7 4 3 1

RXRF=-44dBm
R428 330 R426 NC R427
1 1

RXRF=-48dBm RX RF=-41dBm RXRF=-42dBm
CF401 10.7MHz
1 2 3

CF402
1 3 4 5 2

C451 16V10 IFGND

ANTENA C452 M1000P ANT RFRX 1 3
1 1

DUP402 NC IN VDD GND 2 OUT 4 R425
1 1

455KHZ

K0.1 C446 1 Z0.1

C445

C450

D403 D402 NC NC

!
1.0uH
1

C443 K0.1
1

R429

46.97MHz

1

K0.1

RXGND

RXRF=-55dBm

NC

R430 C448 Z0.1 NC 1 C449 J68P

C447 Z0.1

T402 NC

C444

1 1

0

1

1

1

0

+

1

1kHz
NDTC

1

R431

L401

NC

C442 Z0.1 T401
1

RXVCO 43
VcapRX

1

1

42 41 40 39 38 37 36 35 34 33 32 31 30 29
GND1 1st MIX 2nd MIX 5.5V REG 25mA max VDD1 NOISE DTC

RXAF=-16.5dBm
28 27 26 24 R401 C401 390K J120P
1 1 1

K0.01

C441

C440

1

1 1

K0.01

C439 J18P

C438 NC

D401

C457 L402

C456 NC

TXRF=5dBm
RFTX C459 0
1

NC C458 NC
1

C455 K0.01

1

R432 68
1

1

1

4

7

L403 0

C453 0

DUP401 1 3 4 5
1

10K
3 2 6 5 1

SQ

FILTER FILTER

SQ

R402 10K

1 1

C403 K0.1
1

IN VDD GND 2 GND GND OUT 6
1

RXAF=-19.5dBm
DTCOUT R407 10K
1

44 45 46

1st LOCAL OSILLATAR

TO SQ OUT +0.5dB PRE AMP

C402J120P 0
1

R403 22K R406 10K
1 1 1 1

C454 K0.01

+

RX-MUTE EXPANDER

R423
1

0 R422 6.8K

R421
1

47 48 49 50 C431 G27P 10.24MHz
1 1 PLL

LD(RX) RX PD LD(TX) TX PD

14 bit programmable counter 10 bit programmable counter /8

C404 R404 1 25 K3300P
1

0

1

R424

10K

2.2K

E-DET ZAP

23 22 21 20 19 18 17 16 15

R405 33K C408 K0.1 C409 K0.047 R410 22K C412 K0.22
1 1 1

C405 C406 NC K4700P R409 R408 15K
1

C407 K0.1 C410 K0.1
1

1

C520 K0.01

R517 10

C433 16V10

C432 K0.01

C436 NC

C434 NC

1

1

Fin TX GND

14 bit programmable counter GND3 ZAP POWER DOWN LINE AMP COMP RX DATA OUT LIMITTER MIC AMP POWER DOWN C DET VDD MIC MUTE EN VDD2

0

C411 K0.068

1

3

1

1

2

C435 50V4.7

C517 K0.01

VR501 NC
1

Q501
3 1

C437 K0.22

51 52 53 54 55 56

1

1

1

1

+

+

C430 G43P

X401 SIG_OUT

PE(GND)

1

1

Q503 NC

R516 0

1 2 3

C519 K0.01

C509

J22P

1 3

OUT VDD GND 2 IN 4 DUP501 NC

TXGND

C426 K3300P

R511 68K

10K C427

C429

R418

2 1

1

6

2 7 4 3

R420

R503 C503 100K K0.1

C518 K0.01

C522 Z0.1

C508 K0.01

R508 330

4 6

GND C521 J12P R512 56 VDD IN 5 C516 K0.01
1

1

1

1

1

C505 K680P

C513 K0.01

1

C511 K0.01

R507 330

C510 NC

+

1

1

R506 1.0K

C504 Z0.1

1

C502 K0.1

1

1

A0 A1 A2 GND

VDD 8 WP SCL SDA 7 6 5 Q303
2 1 3

1

TXRF=-16dBm

VD501

NC

1

1

IC303 16K EEPROM

R414 2.2K

3

VDD GND

2

1

R505 100K

1

PLL_EN

C428 NC

C515

T502

C424

NC

1

OUT

C506 J47P

1

1

1

1

1

1kHz

C418 NC

1

VOL402 20K

C514 K3300P

3

T-C

DRIVE F out 4

C507 J27P

1kHz

TXAF=-19.6dBm

R417 6.8K

C419 K0.068

R416 0

1 2 1

1

1

1

3

TXRF=0.5dBm

TXRF=-19.7dBm

C501 NC

LCD301
R317 0 1 2 3 4 5 6 7 8 9 10 11 12

R502 680K

2 3 4

R332
1

1

1

1

1

1

100K R333
1

1

1

4.7K
1

R501 270K

C327

CLE1

ALE1

WP1

WE1

IO03

IO02

IO01

IO00

1 TX DATA RA303 500Hz/1kHz NC 1 8 4.6V

R337 4.7K R341 4.7K PLL_CLOCK
PLL_DATA TX_POWER PLL_EN

1

CLE

ALE

FGND

R334 NC

IO3

IO2

IO1

IO0

WP

WE

TX_PWR_CONT

LA9 0 R340 4.7K

LEVEL_CONT

IC304

LINE_SZ

LA8 0

1

1

40 GND

24 I/O 4

25 I/O 5

26 I/O 6

27 I/O 7

23 VDD

44 VDD

41 R/B

28 NC

29 NC

30 NC

31 NC

32 NC

35 NC

36 NC

37 NC

38 NC

39 NC

42 RE

43 CE

LA10 NC

8

8

8

1

RESET

RELAY

33

34

CAS

1

FVDD C329
1 1

C328 NC

GND

RE1 RE

COM2 SEG3

SEG4

SEG5

SEG6

SEG7

SEG8

SEG9

SEG10

SEG11

SEG12

NO-USE

NO-USE

NO-USE

PLL-EN

CHARGE

PLL-DATA

SIG-OUT

NO-USE

GND

VDD

LINE-DTC1

PLL-CLOCK

TX-POWER

USE-CONT

IO04

IO05

IO06

IO07

98 LINE SIEZER STOP
1 2

AUTO_PROG
2 1

HOLD_RNG
2 1

2

SP

1

KEYIN5

KIN5

WE1 RE1

R327 NC R326 NC

96 UART-TX

CDL-OUT

35

1 1

1 1

J100P

C330

UGND1 UTX1 95 WE 94 RE C325 Z0.1 93 VDD 92 GND 91 I/O 0 90 I/O 1 89 I/O 2 88 I/O 3 87 I/O 4 86 I/O 5 85 I/O 6 84 I/O 7 POWER-DOWN CLE(FLASH2) ALE(FLASH2) CE(FLASH2) INUSE-LED 83 WP ANS-LED KEY-IN5 82 KEY-IN4 KEY-IN3 81
1

L-OUT 36 A-VDD 37 LINE-IN 38 LGS 39 DC-IN 40 CID-IN 41 CID-IP 42 CID-O 43 MGS 44 MIN 45 A-GND 46 HM-IN 47 HM-GS 48 VREF GND-PLL 49 VDD-PLL RESET X-OUT VRTC GND X-IN 50

L309

2

SKIP

1

1

3

2

1

6

2

1

9

2

1

#

2

VOL_UP
1 2

KEYIN4

KIN4

IO00 IO01 IO02 IO03 IO04 IO05 IO06 IO07 WP1
1

GREC
2 1

2

2

1

2

5

1

2

8

1

2

0

1

VOL_DOWN KEYIN3
2 1

KIN3

J100P

C331

IC301

J100P

R311 47K
1 1

ERASE
2 1

1

1

2

1

4

2

1

7

2

TONE
1 2

LOCATOR KEYIN2
1 2

C332

C309 J330P

KIN2

1

UART-RX

CID-LED

KEY-IN2

KEY-IN1

KEY-IN0

BELL-IN

STB5

STB4

STB3

STB2

STB1

2

1

2

1

J100P

C334

1

C324

R320

NC

2

1

2

1

2

1

2

1

KIN0

Z0.1

1

RPT

RD_P STB1
STB01 STB02

FLASH STB4
STB04 STB05

NEW_MSG KEYIN0 STB5

C323 K1000P

1

1

0

R316 0 1 1 C321 J10P C322 Z0.1

C319 Z0.1

C335

R321 1.0K RA301 NC 8

STB0
STB00

STB2
STB03

STB3

1

R324 680

R323 680

L322

CLE1

LA4 0

LA3 0

LA2 0

L321

ALE1

CE1

R322 680

J100P

J100P

J100P

J100P

J100P

J100P

C341

C340

C339

C338

C337

C336

8

8

8

1

1

STB04

STB05

STB03

STB02

STB01

STB00

KIN5

KIN4

KIN3

KIN2

KIN1

KIN0

1

LED303

LED302

LED301

(1)

1

1

1

RESET

URX1 URX

C320 J10P

1

1

1

1

1

1

1

C318 Z0.1

J100P

RST
1 1

R315 1.0M X301 4.096MHz

1

1

1

1

1

1

1

1

1

(2) (3)

L324

80 79 78 77 76 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51

1

GND

VDD

KIN1

STB0

GCHECK

ANSWER KEYIN1

SP-LED

LED304 NC

FLASH2

R325 NC

RX-DATA

(4)(5)(6)(7)(8) (9)(10)(11)(12)(13)(14)(15)(16)(17)

UGND UTX

97 TX-DATA

PA-GND SPP SPN VDDPA

32 33 34

1 1

L307

L308

1

1

1

J100P

C333

1

(18)(19)

Q302 NC

RESET

100

TX-POWER-CONT

(LINE-DC-DTC)

LEVEL-CONT

LINE-DTC2

R335 NC

NC IO4

IO5

IO6

IO7

CE1
3 1

1

2

3

4

5

6

7

8

9

10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

L305 0

1

COM1 99 RLY

31

CE

L306

2

C302 Z0.1

1

1

(20)(21)

C326

L325

L326

Z0.1

L304

1

1

1

(22) (23)(24)

R342 100K
1

1

R339 4.7K

22

I/O 3 21

I/O 2 20

I/O 1 19

I/O 0 18

NC 17

NC 16

NC 15

NC 14

NC 13

12

11

NC 10

9

8

7

6

5

4

3

2

1

0

LINE_DTE1

LINE_DTE2

SIG_OUT

1

1

1

ALE

CLE

GND

GND

R343

120K

WP

WE

NC

NC

NC

NC

1

Z0.1

1

(25)

5

1

1

2 T-E

OSC

GND 5

1

6

1

5

1

1

1

1

3

1 VDD

OSC

1

6

2

TXAF=-14.3dBm

R419 10K

2.2K R509

R504 22K

C421 Z0.1

C420 16V47

Q502

1

1

1

1

1

1

IC501

+

3

4

C425 K0.1

7

NC

1

C422 Z0.1

C423

J68P

K0.1

TXRF=-13dBm C512

0 K2200P

1

T501

R415 NC

C417 K0.1

(26) (27)

R510 NC

C414 K680P

PLL_CLOCK

1

CLK

R413 22K

DUP502

R515 NC

SIG_OUT TX_PWR_CONT PLL_DATA

1

TXRF=7.2dBm

GND2

TXVCO

IC401

1

2

3

4

5

6

7

8

9

10 11 12 13 14

RXAF=-16dBm
RX_DATA

1

1

1

3

DATA

MCU

SPLATTER FILTER

ATT(0/2dB)

C413 K3300P

1

1

VOL401 20K

2

1

SIG OUT

LD(TX/RX)

LINE_OUT

C416 K0.22

1

1

1

1

(28)

TX_POWER

SG OUT

R411 27K

RXAF=-17dBm

R433 NC

R412 6.8K

C415 K0.1

1

2

1kHz TALK LOAF=-5.5dBm SP-P LOAF=-6dBm TALK LOAF=-19.5dBm
C110
1

TALK LOAF=-26.5dBm SP-P LOAF=-27.5dBm
1 1

TALK LOAF=-6.5dBm SP-P LOAF=-6dBm
+

TALK LOAF=-7dBm SP-P LOAF=-6dBm
C103 500V680P
1 1

TALK LOAF=-7dBm SP-P LOAF=-6dBm
L101 33uH
1

NC R114
1

Q107
1 3

NC

R112
1

Q103

PO101 0
1

TIP

CN1 TIP RING DC + DC -

R121

R101

NC

1

R129

R102

NC

NC
1 1

SA101

0

NC

R106

R125
1

NC

R115
1

R105

100K

1KHz -20dBm DC48V Loop simulator 60mA

2

0

2

1

3

D103 +
AC-IN 3

K0.056

1

1

1

K4700P

C115

R128

R127

NC 820
1 1 1

Q106 R107 4.7K NC R113 NC Q105 NC Q104
1 1

NC

R122

R120

C107

J100P 16V10 C114 R124 K0.01 Q110 22K C111
+
1 1 1

-

AC-IN

1

4

NC

1

D102

1

C112

D104

1.0K

39K

1

NC

NC

D101

1

RING
1

1

R116

1

NC

C102

1

NC

+

NC

NC

12K

Q108
1 1

C104 500V680P
1

C101 500V680P L102
1 1

16V10uF

1

1

1

R123

D108

R109

1

R108

C109

R119

R117

1

R130 82 R126 1/2W 33

C113 K0.01
1

1

2

C106

R103

100K

NC

3

4.7K

NC

0

1

NC

Q102 NC D107
1

1

C105 NC
1

33uH

SA102

D109 R118 NC
RELAY 120K DC_IN

Q101 NC

R111 NC
1

1

1

16V10uF R131 2.2K

C116

C134

K1000P

C117

K0.1

+

NC

1

R110
1

NC

R132

10K

BELL_IN

R136

LINE_SZ
1 1

47K

1

3 1 1 2 2

1

R137

33K

D105 K0.47 4.7K

R133
1

C118
1

2

C121 K0.033

1 1

100K

K0.15

NC

C120

NC

C129

R135 R134
1

1

VOL101

1

1

Q111

3

3

C119
1

(28)

LINE_DTE1

R153 NC R150
1

RX DATA 300Hz/400Hz 3.4V

R148
1

100K

K0.15

C126

Z1.0

3 2

+

1

IC101:A 8

3

NC

NC R146 6
1

1

NC

TIP_IN TIP_OUT RING_IN

3.3K

1

R151

4 Q109 NC

-

2

R144

(26) (27)

NC

IC101:B
1

+

1

1

5

R147 NC

RING_OUT

NC

1

1

C130

R152

C128

NC

+

NC

R149 NC

(25)

C133

1

R142

470

1

LINE_DTE2

R161 NC
1

NC

1

R156 NC R158
1 1

1.0M

3

Q112
1 2

IC102:A 8 D106 C125 Z1.0
3

+

3

NC

R154 6
1

NC

R140 3.3K
1 1

2

R143

R141

22K

1

1

2 1

R159

4 Q113 NC

-

2

1

NC

IC102:B
1

+

1

5

R155 NC

2.2K C127 Z1.0

NC

3

1

1

C132

R160

C131

NC

+

NC

R157 NC

1

C135

R164

R162

NC

NC

1

1

1

R145

NC

1 3 1 1 2

1

C124 NC ITEM TX-VCO RX-VCO TX-POWER NC LINE-MOD
1

SET SPEC(10CH / 40mA) CONDITION DATA

1

R165 NC

C136 NC

Q114 NC R163

1

-20dBm / 1KHz 3KHzdev / 1KHz , 60dB 3m 3m TALK 20mA 600 -40dBm / 1KHz -50dBm / 1KHz -40dBm / 1KHz -20dBm / 1KHz

1

R139

1

R138

390K

390K

DATA-MOD LINE-OUT NOISE-SQ
RADIATION POWER RX-SENSITIVITY

1

C137

CONSUMPUTION K680P K680P C123 C122 DC IMP RETURN LOSS SP SP OUT SP LINE OUT MIC IN - SP OUT DC5V(DIGITAL1) 6.3V1000 C301 D205
1

(22) (23)(24)

K0.015

1

L301
1

1

MIC IN - LINE OUT DTMF DUAL

+

DC 8V 5V

1kHz

8V REG201
2 OUT GND 3 IN 1

(20)(21)

DC5V(DIGITAL2) Z0.1

Q201 1/4W 270

DC12V
1

1

1

D204

D203

R201

1

1

L201 D210
2

C205 16V10

C302

1

Z1.0

1

+

1

2

1

+

C202

1

3

R207 56K R206
1 1

NC

3

Z1.0

TXAF=-8dBm TALK LOAF=-8dBm

Q204

Q203

C204

R209 100K

6.3V220

1

16V100

1

(18)(19)

C207

D202

C206

R202

330K

NC

+

1

+

SP3

SP1

C214

1.8K

1

SP4 D302 D301
1

R208 NC

C303

SP2 NC

PWR_DOWN

(4)(5)(6)(7)(8) (9)(10)(11)(12)(13)(14)(15)(16)(17)

REG_GND

1

1

L202 10uH 1

1

1

R203

1

DC5V(ANALOG) 6.3V100 C305
+

C306

Z0.1

L311 2KA213

100K

1

L203 D303 10uH
1

CH3 CHG1

1

C307 J150P R301 220K

1

1

1

1

K0.01

TALK LIAF=-27dBm
R303 220K

L313
1

Q202
1 3 2

L314
1

R205 10K
1

L204 10uH
1

CH4 CHG2 NC

R304

D304

1/4W 39

1

R204

C210

D207

C209

C212

C211

1

1

1

D209

6.3V100

R310

1

R305

C310

3.3K

C308J330P
+

D208

C312 R312 100K L316
1 1 1 1 1 1

MIC1

K0.068
1

1kHz -40dBm
MIC + -

1

1

1

1

D206

1kHz

220K

1

1

1

1

1

1

SP-P AF= -49.4dBm

C304

1.0K

C213

1

NC

NC

NC

Z1.0

Z1.0

NC

1

NC

1

C208

L312

DC_IN

D201

SP-P AF=-26dBmSPEAKER

C203

PWR_GND

K0.01

C314

D305

R309 R308 1 C311 Z1.0 K1000P
1 1 1

C313 NC K0.068 Q301 NC
2 1 1

R307 0
1

JP301 NC
1

1.2K

R313 C316 10K

3

Z1.0

MIC2 R306 NC R345 1 R314
1

C315

1

LEVEL_CONT

(2) (3)

R336 1

D306
1

47K

NC

D307 NC
1

R344
1

0

3

CD

VDD

2

C319 Z0.1

C318 Z0.1

1

1

D309
1

D308
1 4 OUT GND 1

K0.22

R346 1

1

R338

C343

C342

100K

1

0 C317 6.3V100
+

NC

IC302

1

PWR_DOWN

(1)

BELL_IN

Z0.1

NC

KX-TC1222BGB SCHEMATIC DIAGRAM (BASE UNIT)

C201 P_GND

K1000P

10uH