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AP915 - 003

DTS Controller for Portable Radio

Revision 0.3 5 May 2003

P

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AP915-003


Copyright (C), 2003 by Engineering Department, ASP Microelectronics Limited. All rights

reserved. No part of this document may by reproduced, transmitted, transcribed, stored in a

retrieval system, or translated into any language, in any form or by any means without the

prior written permission of ASP Microelectronics Limited.

Doc. No. : AP915-003c.doc

Date : 5 May 2003

Rev. : 0.3

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P

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Rev. Date By Description

0.10 24August 2002 CCChan First Draft

0.20 6 November 2002 CCChan Second revisionCorrected LCD drawing and mapping table in section 6

0.30 5 May 2003 CCChan Corrected pin description in section 3

Corrected LCD mapping in section 6.2

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P

A ASPTable of Content

1 GENERAL DESCRIPTION ............. ........... ............. ............. ............ ........... ............. .............. ........... ............. ............. ........... 5

2 BLOCK DIAGRAM.................................................................................................................................................................. 5

3 PIN DESCRIPTION (52 PADS) ........... ............. .............. ............ ............. ........... ............. ........... ............. ............. ............ ...... 6

4 AP915 BONDING INFORMATION:...... ............. ............ ............ ............ .............. ............. ............ ............ ............ ............ .... 7

5 KEYBOARD LAYOUT............................................................................................................................................................8

5.1 JUMPER SETTING OPTION ....................................................................................................................................................8

5.1.1 Model selection Option (Model).. ............. ............ ............. ........... ............. ........... ............. .............. ............ ............. ... 8

5.1.2 Frequency Selection (A0,A1, FMStep and AMStep).. ............ ............. ........... ............. ............ ............ ............ ............. 9

5.1.3 Search tuning method Option (SMODE0, SMODE1) ........... ............. .............. ............ ............. ........... ............. ........ 10

5.1.4 Clock enable Option (Clock EN) ........... ............. ............ ............. ........... .............. ............. ........... ............. ............ .... 11

5.1.5 Power On Switch Option (Pow_Key) ........... ............. ............ ........... ............. ............. ........... ............. ............ ........... 11

5.1.6 Number of memory Option (5 MEM) ........... ............. ............ ........... ............. ............. ........... ............. ............ ........... 11

5.1.7 LCD BIAS Option (BIAS) ..........................................................................................................................................115.1.8 Reserve Jumper ............. ........... .............. ............. ............ ............ ............ ............. ........... ............. ............. ........... ..... 11

5.2 KEY BUTTONS....................................................................................................................................................................12

6 LCD LAYOUT ........................................................................................................................................................................13

6.1 MODEL 0 ............................................................................................................................................................................13

6.2 MODEL 1 ............................................................................................................................................................................13

7 ELECTRICAL SPECIFICATION........................................................................................................................................14

7.1 ABSOLUTE MAXIMUM RATING ..........................................................................................................................................14

7.2 RECOMMENDED OPERATING CONDITION ...........................................................................................................................14

7.3 ELECTRICAL CHARACTERISTICS .........................................................................................................................................14

8 APPLICATION DIAGRAM ..................................................................................................................................................15

8.1 APPLICATION CIRCUIT ........................................................................................................................................................158.2 APPLICATION CIRCUIT EXAMPLE MODEL 0 WITHOUT CLOCK, TACT SWITCH ON/OFF, 1/8 IF ...........................................16

8.3 RADIO MODULE CIRCUIT EXAMPLE 1/8 IF .......................................................................................................................17

8.4 APPLICATION CIRCUIT EXAMPLE - MODEL 1 WITH CLOCK, SLIDE SWITCH ON/OFF, FULL IF ..............................................18

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P

A ASPTable of figures

Figure 1 Block Diagram of AP915.......... ............ ............ ............ ............. ........... ............. ............ ............ ............ .............. ............. ... 5

Figure 2 Pad Ring......... ........... ............. ............ ............. ........... ............. ............ ............ ............ ............ ............ ............. .............. ....... 7

Figure 3 Keyboard Layout ........... ............ ............. ........... ............. ............ ............ .............. ............ ............. ........... ............. ............ .. 8

Figure 4 Level Detect - active low example..... ............. ............ ............ ............ ............ ............ ............. ........... ............. ............ ....... 10

Figure 5 Level Detect - active high example........ ............ ............ ............. ........... ............. ............ ............. ........... ............. .............. . 10

Figure 6 Envelop Detect - active low example.......... ............. ........... ............. ............ ............. ........... ............. ........... ............. ......... 10

Figure 7 Envelop Detect - active high example ........... ............ ........... ............. ............. ............ ............ ............. ............. ............. ..... 10

Figure 8 IF Count - Full IF example ........... ............ ............. ........... ............. .............. ............ ............ ............ ............. ........... ........... 11

Figure 9 Model 0 LCD layout ........................................................................................................................................................... 13

Figure 10 Model 1 LCD Display........ ........... ............. ........... ............. ............. ............ ............. ........... ........... .............. ............. ........ 13

Figure 11 Application circuit example Model 0...... ............. ............ ............ ............ ............. ........... ............. ............ ............ ......... 16

Figure 12 Radio module circuit example 1/8 IF.............. ............. ........... ............. ............. ........... ............. ............ ........... ............. . 17

Figure 13 Application circuit example Model 1...... ............. ............ ............ ............ ............. ........... ............. ............ ............ ......... 18

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1 General Description

The AP915 is a single chip digital tuning controller for portable radio. It supports nearly all the world wide radio system of FM

and MW (AM) bands.

Features

Two models with different features selected by diode option

10/5 Preset memories (diode option) for each AM and FM band

Last channel memory. One station for each band

Manual tuning and seek tuning.

Flexible configurations through diode jumper option

14 segments x 4 commons LCD display driver

Selectable 1/2 or 1/3 bias

Built-in voltage regulator and voltage doubler for generating stable LCD supply voltage

2 Block Diagram

A

A

A

1/2

MUX 1/15 or

1/16

Swallow

Counter

Programmable

Counter

IF Counter Reference Divider

Phase

Com

parator

CPU Core

ROM

RA M

General Purpose I/O

14 segments x 4

commons LCD

Driver

Voltage

Regulator

FMIN

AMIN

IFIN

XIN

XOUT

RESETB

TEST

V_RADIO

BAND

KO3-KO0

KI5

-KI0

CO

M

1

-COM

4

SE

G1

-SEG14

DO

MUTE

C1

C2

VLCD

VEE

HOLD

Alarm

JUMPER

BASS

BAND_Z

VD D

STEREO

M

ONO

GND

Figure 1 Block Diagram of AP915

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3 Pin Description (52 pads)

Pad # Symbol Pin Name Type Description

1 VEE VEE A Regulated 1.5V supply voltage

2 C1 C1 A Voltage doubler capacitor

3 C2 C2 A Voltage doubler capacitor

4 VLCD VLCD A LCD supply voltage5 SEG14 SEG14 OL LCD segment driver output

6 SEG13 SEG13 OL LCD segment driver output













19 COM4 COM4 OL LCD common driver output




23 PA0 MONO O Select for mono or stereo reception0: Mono reception1: Stereo reception

24 PA1 BASS (model 0)STEREO (model 1)

I Bass enhancement control (model 0)1: Bass enhanced, BBS icon on0: Normal bass, BBS icon off

Stereo reception indication (model 1)0: STEREO Mode, stereo icon will lit1: MONO mode

25 PA2 BAND_Z O AM/FM selection output to the tuner0: AMZ: FM

26 PA3 V_RADIO I/O Radio On/ OFF switch0: OFF1:ON

27 PA4 BAND O AM/FM selection output to the tuner1: AM0: FM

28 PA5 STEREO (model 0)BASS (model 1)

O Stereo reception indication (model 0)0: STEREO Mode, stereo icon will lit1: MONO mode

Bass enhancement control (model 1)1: Bass enhanced, BBS icon on0: Normal bass, BBS icon off

29 PA6 JUMPER O For jumper function

30 PA7 BUZZER O BUZZER Alarm output

31 MUTE MUTE O Active high mute output.32 K0 KI0 ISD Keyboard scan input

33 K1 KI1 ISD Keyboard scan input



36 T0 KI4 ISD Keyboard scan input

37 T1 KI5 ISD Keyboard scan input

38 T2 KO0 ISD Keyboard scan input

39 T3 KO1 O Keyboard Scan Output



42 TEST TEST ISD Reserved for IC test used

43 HOLD HOLD I Detect presence of DC supply

44 DO DO OT PLL output for VCO

45 VDD VDD -

46 AMIN AMIN IA AM VCO signal input

47 FMIN FMIN IA FM VCO signal input

48 GND GND -

49 IFIN IFIN IA IF signal input

50 RESETB RESETB ISU Active low IC reset.51 XIN XIN POSC 75kHz crystal oscillator input

52 XOUT XOUT POSC 75kHz crystal oscillator output

IA : Analog input

A : Analog I/O pad

IS : CMOS schmitt trigger input

ISU : CMOS schmitt trigger input with pull-up

I : Input Pad

O : Output Pad

OL : LCD Driver Output Pad

PSOC : Oscillator Pad

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4 AP915 bonding information:

PAD NO. PAD NAME. X-coordinate Y-coordinate PAD NO. PAD NAME. X-coordinate Y-coordinate

1 VEE -1282.5 -766 27 PA4 672.5 766

2 C1 -1167.5 -766 28 PA5 557.5 766

3 C2 -1052.5 -766 29 PA6 442.5 766

4 VLCD -937.5 -766 30 PA7 327.5 766

5 SEG14 -822.5 -766 31 MUTE 212.5 766

6 SEG13 -707.5 -766 32 K0 97.5 766

7 SEG12 -592.5 -766 33 K1 -17.5 766

8 SEG11 -477.5 -766 34 K2 -132.5 766

9 SEG10 -362.5 -766 35 K3 -247.5 766

10 SEG9 -247.5 -766 36 T0 -362.5 766

11 SEG8 -132.5 -766 37 T1 -477.5 766

12 SEG7 132.5 -766 38 T2 -592.5 766

13 SEG6 247.5 -766 39 T3 -707.5 766

14 SEG5 362.5 -766 40 T4 -822.5 766

15 SEG4 477.5 -766 41 T5 -937.5 766

16 SEG3 592.5 -766 42 TEST -1052.5 766

17 SEG2 707.5 -766 43 HOLD -1167.5 766

18 SEG1 822.5 -766 44 DO -1282.5 766

19 COM4 937.5 -766 45 VDD -1322 410.4

20 COM3 1052.5 -766 46 AMIN -1322 295.4

21 COM2 1167.5 -766 47 FMIN -1322 180.4

22 COM1 1282.5 -766 48 GND -1322 65.4

23 PA0 1132.5 766 49 IFIN -1322 -49.6

24 PA1 1017.5 766 50 RESETB -1322 -164.6

25 PA2 902.5 766 51 XIN -1322 -279.6

26 PA3 787.5 766 52 XOUT -1322 -394.6

Figure 2 Pad Ring

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5 Keyboard Layout

A 0 A 1 F MSte p A MStep SM OD E0 SM OD E1

CLK_EN

M 1/M 6 M 2/M 7 M 3/M 8 M 4/M 9 M 5/M 10

T[2]

PA[6]

T[3]

T[4]

T[5]

K[0] K[1] K[2] K[3] T [0] T[1]

P ow _K ey 5 M EM B ia s R es erv e

U P /H R D N /M I N

MEM/

CKADJ BAN D M ONO HO LD

M .U P M .D NSLEEP

ON/OFF

Model

ON/OFF

SLEEPALARM BBS

Snooze

Figure 3 Keyboard Layout

Note: The ON/OFF and SLEEP key location is different for model 0 and mode 1. The upper is for model 0.

5.1 Jumper Setting Option

5.1.1 Model selection Option (Model)

This option is used to select the LCD display mapping for different model

Model Feature

0 Model 0 features

1 Model 1 features

Difference between Model 0 and Model 1

Model 1 has beep tone when radio frequency is tuned up or down and searching, Model 0 have no beep tone.

Model 1 use two keystroke to store radio station whereas Model 0 use three keystroke to store radio station.

See the following sections for other differences between Model 0 and Model 1 features.

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5.1.2 Frequency Selection (A0,A1, FMStep and AMStep)

These options are used to select the frequency range of the radio

Model 0

Area Band A0 A1 AM Step FM Step ReceivingFrequency (Hz)

Step (Hz) Ref Freq. (Hz) IF Freq (Hz) M1 M2 M3 M4 M5

x 0 87.5M - 108.1M 200k 25k 10.7M 87.5 90.1 98.1 106.1 108.1FM

x 1 87.5M 108.0M 50k 25k 10.7M 87.5 90.1 98.1 106.1 108.0

0 x 520k - 1710k 10k 5k 450k 520 610 1000 1400 1710AM

0 0

1 x 522k - 1620k 9k 3k 450k 522 612 999 1404 1620

x 0 87.3M 108.1M 100k 25k 10.7M 87.3 90.1 98.1 106.1 108.1FM

x 1 87.5M 108.0M 50k 25k 10.7M 87.5 90.1 98.1 106.1 108.0

0 x 520k - 1720k 10k 5k 450k 520 610 1000 1400 1720

USA

AM

0 1

1 x 531k - 1611k 9k 3k 450k 531 612 999 1404 1611

x 0 87.5M 108.0M 50k 25k 10.7M 87.5 90.1 98.1 106.1 108.0FM

x 1 87.3M 108.1M 50k 25k 10.7M 87.3 90.1 98.1 106.1 108.1

0 x 522k - 1629k 9k 3k 450k 522 612 999 1404 1629MW

1 0

1 x 530k - 1610k 10k 5k 450k 530 610 1000 1400 1610

x 0 87.5M 108.0M 50k 25k 10.7M 87.5 90.1 98.1 106.1 108.0FM

x 165.0M 74.0M87.5M 108.0M

50k 25k 10.7M 65.0 90.1 98.1 106.1 108.0

0 x 531k - 1611k 9k 3k 450k 531 612 999 1404 1611

Europe

MW

1 1

1 x 530k - 1610k 10k 5k 450k 530 610 1000 1400 1610

Model 1

Area Band A0 A1 AM Step FM Step ReceivingFrequency (Hz)

Step (Hz) Ref Freq. (Hz) IF Freq (Hz) M1 M2 M3 M4 M5

x 0 87.5M - 108.1M 200k 25k 10.7M 87.5 90.1 98.1 106.1 108.1FM

x 1 87.5M 108.0M 50k 25k 10.7M 87.5 90.0 98.0 106.0 108.0

0 x 520k - 1710k 10k 5k 450k 520 600 1000 1400 1710AM

0 0

1 x 522k - 1620k 9k 3k 450k 522 603 999 1404 1620

x 0 87.3M 108.1M 100k 25k 10.7M 87.3 90.0 98.0 106.0 108.1FM

x 1 87.5M 108.0M 50k 25k 10.7M 87.5 90.0 98.0 106.0 108.0

0 x 520k - 1720k 10k 5k 450k 520 600 1000 1400 1720

USA

AM

0 1

1 x 531k - 1611k 9k 3k 450k 531 603 999 1404 1611

x 0 87.5M 108.0M 50k 25k 10.7M 87.5 90.0 98.0 106.0 108.0FM

x 1 87.3M 108.1M 50k 25k 10.7M 87.3 90.0 98.0 106.0 108.1

0 x 522k - 1629k 9k 3k 450k 522 603 999 1404 1629MW

1 0

1 x 530k - 1610k 10k 5k 450k 530 600 1000 1400 1610

x 0 87.5M 108.0M 50k 25k 10.7M 87.5 90.0 98.0 106.0 108.0FM

x 165.0M 74.0M87.5M 108.0M

50k 25k 10.7M 65.0 90.0 98.0 106.0 108.0

0 x 531k - 1611k 9k 3k 450k 531 603 999 1404 1611

Europe

MW

1 1

1 x 530k - 1610k 10k 5k 450k 530 600 1000 1400 1610

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5.1.3 Search tuning method Option (SMODE0, SMODE1)

This option is used to select for the method used in search tuning

Model SMODE1 SMODE0 Description

0 0 LEVEL Detect 0 (Level Detect) Active high

0 1 LEVEL Detect 1 (Envelope detect) Active high

1 0 IF Count (1/8 IF for FM Mode)0

1 1 IF Count (Full IF for FM Mode)0 0 IF Count (Full IF for FM Mode)

0 1 IF Count (1/8 IF for FM Mode)

1 0 LEVEL Detect 1 (Envelope detect) Active low1

1 1 LEVEL Detect 0 (Level Detect) Active low

Note: IF Count method is more accurate in search tuning.

5.1.3.1 Level Detect:

Search radio stations by detect the logic level on the IFIN pin.

IFIN

98.0MHz97.95MHz 98.1MHz98.05MHz

Search stops at 98.1MHzLevel Detect, active low

Figure 4 Level Detect - active low example

IFIN

98.0MHz97.95MHz 98.1MHz98.05MHz

Search stops at 98.1MHzLevel Detect, active high

Figure 5 Level Detect - active high example

5.1.3.2 Envelope detect:

Search radio stations by detect the change in logic level on the IFIN pin.

IFIN

98.0MHz97.95MHz 98.1MHz98.05MHz

Search stops at 98.1MHzEnvelop Detect, active low

98.15M Hz 98.2MH z 98.25MHz

Figure 6 Envelop Detect - active low example

IFIN

98.0MHz97.95MHz 98.1MHz98.05MHz

Search stops at 98.1MHzEnvelop Detect, active high

98.15M Hz 98.2MH z 98.25MHz

Figure 7 Envelop Detect - active high example

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5.1.3.3 IF Count:

Search radio stations by counting the intermediate frequency (I.F.) on the IFIN pin.

The acceptable I.F. range for AM band is 450 +/- 0.3kHz

The acceptable I.F. range for FM band is 10.7 +/- 0.02MHz for Full IF and 1.3375 +/- 0.0025MHz for 1/8 IF

10.68MHz 10.69MHz 10.70MHz

98.0MHz97.95MHz 98.1MHz98.05MHz

IFIN

Search stops at 98.1MHzIF Count, FUll IF

Figure 8 IF Count - Full IF example

5.1.4 Clock enable Option (Clock EN)

This option is used to select the enable or disable of the real time clock.

Real Time Clock

Without Diode Disable ClockWith Diode Enable Clock

Note: Alarm and Sleep function is also disabled if Clock is disabled.

5.1.5 Power On Switch Option (Pow_Key)

This option is used to select for the type of the Power switch.

Model Pow_Key Function

0 TACT Switch0

1 Slide Switch

0 Slide Switch1

1 TACT Switch

5.1.6 Number of memory Option (5 MEM)

This option is used to select the number of preset memories for each FM and AM band. It is used with the MODEL jumper.

Model 5 MEM Function

0 10 preset memories for FM and AM band0

1 5 preset memories for FM and AM band

0 5 preset memories for FM and AM band1

1 10 preset memories for FM and AM band

5.1.7 LCD BIAS Option (BIAS)

This option is used to select the LCDBIAS used in the LCD.

Model Bias Function

0 Bias0

1 1/3 Bias

0 1/3 Bias1

1 Bias

5.1.8 Reserve Jumper

The reserve jumper is for reserved use and should not be connected.

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5.2 Key Buttons

Name Description

UP/HR When radio is on, it is used to tune up the station frequencyWhen radio is off and clock adjust is enable, it is used to adjust the hour time

DN/MIN When radio is on, it is used to tune down the station frequency

When radio is off and clock adjust is enable, it is used to adjust the minute time

MEM / CKADJ Memory selection or clock adjustment button

BAND Radio frequency band selection when radio is ON

MONO Toggle MONO Pin high low

HOLD Toggle key lock mode

Sleep Sleep time adjust

Alarm Alarm time adjust

M.UP Memory Channel Decrement button

M.DN Memory Channel Increment button

ON/OFF Button turn on / turn off the Radio (Used only when POW_KEY JUMPER is present)

BBS Toggle BASS pin high low

M1/M6 Short press: select memory channel 1

Long press: select memory channel 6 (Long press for Model 0 only)









Snooze Snooze alarm for 5 minutes during the alarm period

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6 LCD Layout

6.1 Model 0

ChannelNum

berIndicator

Digit 1 Digit 2 Digit 3 Digit 4 Digit 5 Digit 6 Digit 7

Do t

a

b

c

d

g

e

fFM

AM MHz

kH z

CHMEMOST

PM

S

EG

11

S

EG

10

S

EG

9

S

EG

8

S

EG

7

S

EG

6

S

EG

5

S

EG

4

S

EG

3

S

EG

2

S

EG

1

C

OM

4

C

OM

3

C

OM

2

C

OM

1

MW

A l ar m S l ee p B as s L oc k

Figure 9 Model 0 LCD layout

COM4 COM3 COM2 COM1

SEG1 6b,6c 7b 7g 7c

SEG2 7a 7f 7e 7d

SEG3 5acdfg 4b 4g 4c

SEG4 4a 4f 4e 4d

SEG5 MEMO 3b 3g 3c

SEG6 3a 3f 3e 3d

SEG7 CH 2b 2g 2c

SEG8 2a 2f 2e 2d

SEG9 ST 1b,1c MW/kHz FM/Dot/MHz

SEG10 Alarm Sleep PM Colon

SEG11 BASS AM (for clock) LOCK

6.2 Model 1

kHz

MH z

+ 5

M

PM

Digit 1 Digit 2 Digit 3 Digit 4 Digit 5 D ig it 6 D ig it 7

a

b

c

d

g

e

f

LOCKSleep

AM

AlarmBass

MW/AM

COM1

COM2

COM3

COM4

S1

S2

S3

S4

S5

S6

S7

S8

S9

S10

FM

For

Radio

Stereo

Figure 10 Model 1 LCD Display

COM4 COM3 COM2 COM1

SEG1 6b,6c 7b 7g 7c

SEG2 7a 7f 7e 7d

SEG3 5acdfg 4b 4g 4c

SEG4 4a 4f 4e 4d

SEG5 M 3b 3g 3c

SEG6 3a 3f 3e 3d

SEG7 LOCK 2b 2g 2c

SEG8 2a 2f 2e 2d

SEG9 Stereo 1b,1c MW or AM / kHz * FM/Dot/MHz

SEG10 Alarm Sleep PM Colon

SEG11 BASS AM (for clock)*The actual display on LCD should be MW + kHz or AM + kHz depends on the area of the radio to be used

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7 Electrical Specification

7.1 Absolute Maximum Rating

Item Symbol Rating Unit

Power Supply Voltage (logic) VDD -0.5 to 7.0 V

Input Voltage Vin -0.5 to VDD+0.5 V

Power Dissipation (Ta = 70C) Pd 100 mW

Storage Temperature Tstg -50 to 125 C

Operating Temperature Topr -20 to 70 C

7.2 Recommended Operating Condition

Item Symbol Min. Typ. Max. Unit

Power Supply Voltage VDD 1.8 - 3.3 V

Input Voltage Vin 0 - VDD VOperating Temperature Topr -20 - 70 C

7.3 Electrical Characteristics

Symbol Parameter Condition Min. Typ. Max. Unit

VDD Supply Voltage 1.8 - 3.3 V

VIH Input high voltage 0.8VDD - - V

VIL Input low voltage - - 0.2VDD V

RPU Pull-up resistance VIN = 0V 100K - -

RPD Pull-down resistance VIN = VDD 100K - -

Vina FMIN, AMIN and IFIN input voltage 300 - mV(pp)

IOL Output low current VOL = 0.4V - 1 - mAIOH Output high current VOH = VDD - 0.4V - 1 - mA

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8 Application Diagram

The application circuits in this section is for reference only. Modifications may be needed to suit particular applications.

8.1 Application circuit

MHzkHz

PM

ST

FM

AM

COM1

COM2

COM3

COM4

S1

S10

S11

S2

S3

S4

S5

S6

S7

S8

S9

AP915V3

IC1

AMIN

BAND

BAND_

Z

BASS

BUZZER

C1

C2

COM1

COM2

COM3

COM4

DO

FMIN

GND

HOLD

IFIN

JUMPER

KI0

KI1

KI2

KI3

KI4

KI5

KO0

KO1

KO2

KO3

MONO

MUTE

RESETB

S1

S10

S11

S12

S13

S14

S2

S3

S4

S5

S6

S7

S8

S9

STEREO

TEST

VDD

VEE

VLCD

V_

RADIO

XIN

XOUT

T2

T1

T4T3

T5

SW SW

SW

SW

SW

SW

SW

SW SWSW SW

SWSW SWSW

SW SWSW

R14

100K

R1

39K

R3

22K

R2

1MEG

I_440

100K

R12

100K

R11

100K

R5

200K

R13

10K

Y

C9

0.1U

C7

0.01U

C8

1U

C16

100U

C14

0.1U

C11

0.1U

C6

300P

C12

47P

C5

15P

C4

15P

C3

0.1U

C1

0.47U

C2

0.1U

IFIN

VT

MUTE

RADIO_PWR

BAND

STEREO

POWER

FMIN

AMIN

GND

BAND_Z

BUZZER

MONO

BASS

KI[0]

KI[1]

KI[2]

KI[3]

KI[4]

KI[5]

KO[0]

KO[1]

KO[2]

KO[3]

on PCB designIt may be ommited depending

to reduce digital noise

1.8V Voltage Regulator

on the RF board designUse either BAND or BAND_Z pin depending

VDD approx. 1.8V

L:BASS OFF H:BASS ON

L:MONO MODE H:STEREO MODE

L:FM MODE H:AM MODE

Z:FM MODE L:AM MODE

L:STEREO RECEIVED H:MONO RECEIVED

L:RADIO OFF H:RADIO ON

ModelCLK_EN

Smode1AMStep

Bias5MemPowKey

Smode0FMStepA1A0

M3 Snooze

OnOffM.UpAlarmSLEEP BASS

HOLDMONOBANDM/CLK

M.Dn

M4M1 M5M2

T.DNT.UP

75kHz

Figure 7 Application Circuit

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8.2 Application circuit example Model 0 without clock, tact switch on/off, 1/8 IF

AP915V3

IC1

AMIN

BAND

BAND_

Z

BASS

BUZZER

C1

C2

COM1

COM2

COM3

COM4

DO

FMIN

GND

HOLD

IFIN

JUMPER

KI0

KI1

KI2

KI3

KI4

KI5

KO0

KO1

KO2

KO3

MONO

MUTE

RESETB

S1

S10

S11

S12

S13

S14

S2

S3

S4

S5

S6

S7

S8

S9

STEREO

TEST

VDD

VEE

VLCD

V_

RADIO

XIN

XOUT

MHz

kHzPM

ST

FM

AM

COM1

COM2

COM3

COM4

S1

S10

S11

S2

S3

S4

S5

S6

S7

S8

S9

T2

T1

SW

SW SW SW

SW

SW

SW

SW

SW SWSW SW

SW

SW SW

R5

1MEG

R4

100K

R14

100K

R1

39K

R3

22K

R2

1MEG

Y

C16

100U

C9

0.1U

C7

0.01U

C8

1U

C14

0.1U

C11

0.1U

C6

300P

C12

47P

C5

15P

C4

15P

C30.1U

C10.47U

C2

0.1U

IFIN

VT

MUTE

RADIO_PWR

BAND

STEREO

POWER

FMIN

AMIN

GND

MONO

BASS

KI[0]

KI[1]

KI[2]

KI[3]

KI[4]

KI[5]

KO[0]

KO[1]

KO[2]

KO[3]

Model 0 without CLOCK with Power key use tact switch

1/8 IF count, 10 memory in each band, LCD 1/3 bias

Model0

SLEEPOnOff

Smode0



L:FM MODE H:AM MODE



ModelCLK_EN

Smode1AMStep

Bias5MemPowKey

FMStepA1A0

M3

M.UpAlarm BASS

HOLDMONOBANDM/CLK

M.Dn

M4M1 M5M2

T.DNT.UP

75kHz

Figure 11 Application circuit example Model 0

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8.3 Radio module circuit example 1/8 IF

DC3V

L2

J1

D5

1N4148

D6

1N4148

T1

Q2

CF210.7M

CF1

450K

C25

4.7UC16

100U

C10

1UC8

4.7U

C17

47U

C22

1U

C21

1U

C13

0.47U

Q1

Q3

Q4

Q6

Q5

R9

330

R2

100K

R12

10

R17

2.2K

R5

3.3K

R1

100K

R3

100K

R4

100K

R10

2.2K

R11

220

I_64

12K

R15

1M

R16 39K

R14

100K

R13

100

R6

10K

R8

10K

R7

2.2K

T2

L4

TC2TC1L1

L3

C24

0.1U

C14

0.1U

C2

0.02U

C26

1000P

C27

2P

C15

103

C11

0.1U

C9

0.1U

C7

102

C1

150P

C5

5PC6

10PC3

100P

C4

470P

C28

104

C29

104

C19

47P

C18

102

C23

0.1U

C12

2200P

D2

1SV149

D4

1SV149

D3

1SV101

D1

1SV101

BPF

IC1

TA2104B

FM_

RFI

FM_

RFO

MPX_

IN

AGC

AMIF

AM_

OSC

AM_

RFI

DET_

OUT

FMIF

FM_

OSC

GND

IFREQ

LOW_

CUT

LPF1

LPF2

L_

OUT

MIX_

OUT

OSC_

OUT

QUAD

RF_

GND

RF_

VCC

R_

OUT

ST_

LED

VCC

BAND

AMIN

FMINSTEREO

IFIN

MUTE

VT

L_OUTRADIO_PWR

R_OUT

POWER

GND

9013

9013

9013

9012

C2458

C2458

10.7M

2SK118

Figure 12 Radio module circuit example 1/8 IF

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8.4 Application circuit example - Model 1 with clock, slide switch on/off, Full IF

MHzkHz

PM

ST

FM

AM

COM1

COM2

COM3

COM4

S1

S10

S11

S2

S3

S4

S5

S6

S7

S8

S9

AP915V3

IC1

AMIN

BAND

BAND_

Z

BASS

BUZZER

C1

C2

COM1

COM2

COM3

COM4

DO

FMIN

GND

HOLD

IFIN

JUMPER

KI0

KI1

KI2

KI3

KI4

KI5

KO0

KO1

KO2

KO3

MONO

MUTE

RESETB

S1

S10

S11

S12

S13

S14

S2

S3

S4

S5

S6

S7

S8

S9

STEREO

TEST

VDD

VEE

VLCD

V_

RADIO

XIN

XOUT

T2

T1

T4T3

T5

SW SW

SW

SW

SW

SW

SW

SW SWSW SW

SW SW

SW SWSW

R14

100K

R1

39K

R3

22K

R2

1MEG

I_440

100K

R12

100K

R1

1

100K

R5

200K

R13

10K

Y

C9

0.1U

C7

0.01U

C8

1U

C16

100U

C14

0.1U

C11

0.1U

C6

300P

C12

47P

C5

15P

C4

15P

C3

0.1U

C1

0.47U

C2

0.1U

IFINVT

MUTE

RADIO_PWR

STEREO

POWER

FMIN

AMIN

GND

BAND_Z

BUZZER

MONO

BASS

KI[0]

KI[1]

KI[2]

KI[3]

KI[4]

KI[5]

KO[0]

KO[1]

KO[2]

KO[3]

Full IF count, 5 memory in each band, LCD 1/3 bias

Model 1 with Clock, Power key use slide switch

Model1

PowKey

on PCB designIt may be ommited depending

to reduce digital noise

1.8V Voltage Regulator

on the RF board designUse either BAND or BAND_Z pin depending

VDD approx. 1.8V



L:FM MODE H:AM MODE

Z:FM MODE L:AM MODE



ModelCLK_EN

Smode1AMStep

Bias5Mem

Smode0FMStepA1A0

M3 Snooze

OnOffM.UpAlarmSLEEP BASS

HOLDMONOBANDM/CLK

M.Dn

M4M1 M5M2

T.DNT.UP

75kHz

Figure 13 Application circuit example Model 1

Radio Ap915-003 Spec En

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