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FV-DB2E

6 – 4

C137

R152

C136

C152

R127

R128

R144

R143

R149

JP106

R145

R146

R0

R1

C170

C157

C156

R156

JP103

R117

C160

C161

R115

R147

R111

R109

C153

JP101

C133

R108

C141

C139

R138

C108

C106

R102

C104

C107

R139

C105

IC101

C140

R107

C103

C135

R153

C138

R154

R134

R151

R150

C122

R121

R119

R110

R113

R116

C350

JP302

C303

C312

R329

JP303

C343

C306

C313

R306

R305

IC301

C349

C348

C320

R314

R307

R313

R316

Q302

R327

C329

C314

C334

C336

R328

C332

R321

R308

C337

R319

R320

C318

C341

C342

C326

C339

C340

R315

R318

R338

R317

C352

C351

C331

R312

C327

R337

C357

R336

C347

C356

Q303

R332

R334

R331

R333

CNP107

D104

CNP105

D103

CNP106

CNW702

Q106

Q109

R155

Q107

Q108

C128

IC103

R148

C127

C155

DZ101

Q105

R122

R136

CNW101

CNS101

R104

C151

C101

R103

R135

R105

R101

C150

R106

C102

R132

R133

C132

C121

C109

C110

R120

JK101

ANALOG LINE

OUTPUT

R140

R160

C154

Q103

C112

Q101

C111

D102

C113

C123

C124

IC104

C125

C119

L102

C118

C120

C117

R131

JK102

HEADPHONES

R130

CNP303

CNW303

D308

D309

R323

C330

ZD308

L307

C316

C317

R311

C344

D307

C325

C335

X301

C333

R310

C345

C321

L304

D306

C309

R302

D302

L303

D303

BF301

C307

C346

C302

CF301

L308

C315

CF303

C319

CF302

CNP101

C323

C322

C324

C328

C126

CNS702

CNW105

SP601

SP602

CNW407

CNS407

1

1

2

3

4

5

6

7

8

9

9

1

5

10

15

20

24

12

13

1

1

2

3

4

4

1
2

1
2

1

2

3

4

SPEAKERS

L-CH

R-CH

4

3

2

1

YL

GY

BK

RD

7

8

9

10

11

12

1

2

3

4

5

6

YL
GR

GY

BL

1

YL
GR

GY

BL

GY

BK

BK

BK

WH

RD

BK

BK

BK

BK

GY

BK

RD

BK

BK

GR

YL

GY

BL

GR

YL

GY

BL

WH

12

1

2

3

4

5

6

7

8

9

10

11

12

1 2 3 4 5 6 7 8 9

1

2

1

2

1

5

10

15

18

19

20

25

30

35

36

(214)

(243)

TUNER PWB-A3

MAIN PWB-A1

B R

COLOR TABLE

R D ( R )

O R

Y L

G R

B L

V L

G Y

W H ( W )

B K

P K

BROWN

RED

ORANGE

YELLOW

GREEN

BLUE

VIOLET

GRAY

WHITE

BLACK

PINK

E

C

B

B

B

C

E

C

E

3

2

1

E

C

B

B

C

E

B

C E

B

C E

CNS107

3

2

1

3

2

1

3

2 1

GY

BK

BK

BK

Lead-free solder indication

Lead-free solder is used in this Main PWB, Display PWB, Tuner PWB, Power PWB.
Refer to "Precautions for handling lead-free solder" for instructions
and precautions.

FV-DB2E

6 – 5

R470

R403

R405

R408

R406

R407

R409

R404

R401

R402

C901

R801

D702

C801

R445

R446

R447

R448

R449

R450

R451

R452

R453

R454

SW419

BAND

SW418

INFO

SW417

AUTO TUNE

SW416

PRESET
SELECT

SW415

TIMER

SHIFT

SW414

PRESET 5

SW411

PRESET 2

SW412

PRESET 3

SW413

PRESET 4

SW410

PRESET 1

CNP409

CFW410

SW420

ON/STAND-BY

CNW409

CNS409

CNP411

C803

SW408

K-TIMER

SW406

CLOCK

SW409

MENU

SW407

SOUND

SW405
ENTER

SW403

TUNING

DOWN

CNW405

CNS405

SW402

VOLUME

UP

L403

SW401

TUNING

UP

L404

SW404

VOLUME

DOWN

CNW705

CNS705

CNS704

CNW704

PS703

1

3

4

4
3
2
1

1

1

3

4 3 2 1

1

5

5
4
3
2
1

CNP405

6-3

2

-F

TO

DISPLAY

P

WB

BATTERIES

DC

3

V

[

"AA"

size

(UM/SUM-3,

R6

or

HP-7)

b

a

tt

e

ryx2a

sm

e

m

o

ryb

a

tt

e

ri

e

s

]

B R

COLOR TABLE

R D ( R )

O R

Y L

G R

B L

V L

G Y

W H ( W )

B K

P K

BROWN

RED

ORANGE

YELLOW

GREEN

BLUE

VIOLET

GRAY

WHITE

BLACK

PINK

(221)

(222)

(223)

(225)

(224)

1

1 2

2

1 2

CNS411

6 - 3 2 - H

FROM DISPLAY PWB

CNP705

6 - 3 3 - C

TO POWER PWB

2

2 1

1

CNP704

6 - 3 3 - C

TO POWER PWB

BATTERIES
DC 9 V [ "C" size (LR14) alkaline battery x 6 as memory batteries ]

POWER SWITCH
PWB-A7

SWITCH A
PWB-A5

TERMINAL A PWB-A9

TERMINAL B PWB-A10

SWITCH B PWB-A6

GY

BK

BK

BK

BK

GY

BK

BK

BK

GY

BK

Lead-free solder indication

Lead-free solder is used in this Switch A PWB, Switch B PWB, Power Switch PWB, Terminal A PWB.
Refer to "Precautions for handling lead-free solder" for instructions
and precautions.

FV-DB2E

7 – 1

Audio

FV-DB2E

Service Manual

FV-DB2E

Market

E

 

The FS2023 (Volterra) module has been developed as an OEM mod-
ule, which will enable low cost Band  /L-Band DAB receivers. All that
is required to produce a low cost Digital Radio is a power source,
antenna, LCD and Keypad. Alternatively the module can be pro-
grammed to operate in ‘slave’ mode under the control of an existing
microcontroller. The module has been designed for use in static, porta-
ble and car audio products.

Reference software can be provided for both master (Reference MMI),
or slave (Serial Interface) applications.

A block diagram of the Module is shown in Figure 7-1. The main com-
ponents are Band  /L-Band RF frontend, FS1010 (Chorus) DAB
baseband processor, a serial boot FLASH and audio DAC.

As an option SDRAM can be fitted to support advanced applications.
External components that may be connected to the module are shown
as grey blocks in Figure 7-1.

NOTE: 3.3 V rail is connected to RF section only and care should be

taken to provide a clean, decoupled supply to ensure that the
RF sensitivity is not degraded.

An on-board SPI port supports a serial boot FLASH device.

A dedicated port is provided for direct connection to an LCD, general-
purpose I/O lines are provided for keypad scanning, shaft encoder
input and control of simple circuits.

Hardware interfaces include USB ports, and a serial host port for con-
nection to a controlling CPU.

Stereo audio output is available in S/PDIF digital formats, as well as
line level. Multi-channel audio output is available via the I

2

S port, while

PCM or compressed audio can be input to CHORUS via the S/PDIF
input.

The FS1010 (Chorus) processor is based around Imagination Technol-
ogies' META advanced RISC/DSP. In addition to running the core DAB
demodulation functions, this processor is well suited to running the
application code, which receiver manufacturers will add on top of the
core DAB processing to produce complete products. The core DAB
functions require less than one third of the processing capacity of
META, leaving considerable scope for application processing.

The FS2023 (Volterra) module has a number of hardware interfaces,
designed to support a range of DAB applications. The characteristics
of these interfaces are detailed below.

There are two connectors available that can be used to carry VHF (174
MHz to 240 MHz) for Band   /1450 MHz to 1492 MHz for L-Band.
These are a 2.6 mm UMP type and 2.54 mm pitch holes to be used
with a header or for direct soldering of an RF cable.

Stereo line level outputs are provided using the on-board stereo audio
DAC.

Seven signal wires (master clock, bit clock, sample frame, stereo in, 6
channel out) carry digital audio input and multi-channel output to an
external DAC or CODEC. The multi-channel output may be used for
home cinema applications including Dolby Digital and DTS.

The S/PDIF audio output carries a stereo digital audio output on a sin-
gle wire using the signal format defined in IEC60958.

The S/PDIF input accepts digital audio data on a single wire using the
signal format defined in IEC60958. This input may also be used as an
input for CD-ROM data including MP3 encoded date.

The RDI output carries a an RDI signal conforming to Specification of
the Receiver Data Interface (RDI) - Eureka 147 Project - Issue 1. 4
November 1996 on a single wire using the signal format defined in
IEC60958. If an output is not required, then this line may be used as
GPIO.

FS1010

(Chorus)

384KB

RAM

LCD

External

DAC or

CODEC

SDRAM

(optional)

Audio

DAC

Band III /

L-Band RF

3.3V

Serial

Flash

Keypad/

Rotary

encoder

USB

I/face

Serial

I/Faces

S/PDIF

& RDI

I/faces

Input impedance:

50 R, nominal

VSWR

2.0, maximum

Max power:

0 dBm

Sensitivity: 
(signal level required for 10

-4

 BER with 1/2 rate coding) -98 dBm

Adjacent Channel Rejection
(for 10

-4

BER with 1/2 rate coding)

38 dB minimum

Sample rate:

48 kHz

Master clock rate:

512 x sample rate (24.576 MHz)

Sample resolution:

16, 18, 20 or 24 bits (controlled by software).

Sample rate:

48 kHz

Sample resolution:

24 bits

Sample rate:

48 kHz

RDI format:

high capacity

FV-DB2E

7 – 2

The asynchronous serial port carries asynchronous serial characters
over two wires (TxD, RxD) at data rates up to 115 kbit/s. In this particu-
lar application it can be used to control the module in ‘slave’ mode.
The default baud rate is 115 kbit/s.

A USB 1.1 interface (slave) is carried over two wires. The USB inter-
face will support data transfers at up to 12 Mbits/s.

The Serial Control Bus consists of a two wire, open collector bus. This
bus is a master only, and may be used for controlling other devices in
the system.

A single PDM (Pulse Density Modulated) output can be provided for
generation of a low resolution analogue output. This may be used for
control of display brightness for example.

LCD display data is presented on 8 data lines, with 4 timing control
lines to synchronize transfers. The LCD port will support both alphanu-
meric and graphic LCDs. If a LCD connection is not required, then
these lines may be used as GPIO.

NOTE: Ideally, the LCD controller should be powered from the 3V3

supply. If a 5 V LCD module is used it should have its own
supply rail and should not be connected to the 5 V RF supply
as any conducted noise will degrade RF sensitivity.

All the above signals (excluding USB, I

2

S control and stereo out) may

be used as GPIO signals. The state of each GPIO signal can be read
by software. The logic level and tri-state drive of each GPIO signal can
also be controlled by software.

The following table specifies the main pin functions, identifies which of
these can be used as GPIO lines, and also defines an example DAB
product function based on the reference MMI software.

The Reference MMI software assigns the following button mapping for
the keypad matrix:

Alphanumeric mode: 4-bit or 8-bit data transfers.

Compatible with displays using Hitachi 
HD44780, Samsung S6A0069X (KS0066) or 
similar controllers.

Graphic mode:

4-bit or 8-bit data transfers.
4 control signals (date clock, line clock, frame 
clock, polarity reversal) compatible with wide 
range of graphic display controllers.

S/PDIF Output

A11

12

S/PDIF Output

S/PDIF Input

A0

37

Keypad row 3

RDI Output

A10

38

Keypad row 4

S1_DIN

D3

15

S1_DOUT

D2

16

USB_DP

No

9

USB_DP

USB_DM

No

8

USB_DM

SCP_CLK

A9

39

IR remote activity LED

SCP_DAT

A8

40

IR receiver input

PDM Output

A7

41

Keypad column 3

LCD_DATA<7..0>

B<15..8>

25-32

LCD_DATA<7..0>

LCD_F

C1

33

Keypad row 2

LCD_LRS

C2

34

LCD_RS

LCD_M

C0

35

Keypad row 1

LCD_PE

C3

36

LCD_E

AUD_SFR

No

21

AUD_SFR

AUD_SCLK

No

23

AUD_SCLK

AUD_MCLK

No

24

AUD_MCLK

AUD_SDOUT0

No

22

AUD_SDOUT0

AUD_SDOUT1

A1

42

Keypad column 1

AUD_SDOUT2

A2

43

Keypad column 2

AUD_SDIN

A12

44

Keypad column 4

scroll_up

scroll_down

Select

preset 1

display

info

Scan

preset 2

volume_up

volume_down Mute

preset 3

power

factory_rst

preset 4

preset 5