Sanyo EP93F User Manual

LA17000M

LC75410E/W

LA17000M

FM
ANTD

ANT

FM RF
AGC

FE
GND

FM
OSC

AM/FM
SW

AM
OSC

NC
Sens

NC
AGC

AM
OSC

Gore
OUT

MPX
Pdot IN

NC MPX

GND

SD
ST-IND

PLL IN

PD1

AM/FM
S-METER

MRC
OUT

SNC

HCC

DET
OUT

SEP
ADJ

FM
S-METER

MUTE
DRIVE

AFC
IN

QD
OUT

QD
IN

VREF

FM
SD

KEYED
AGC

VCC

C.
HCC

AM
LC

PILOT
DET

IF
AGC

PLL
VSS

PDS

XBUFF

I/O-2

X' IN

X' OUT

I/O-1

HCTR

SEEKSW

MPX VCO

IF COUNT BUFF
SEEK/STOP Switch

CSB912TF108

GND

PHASE
COMP

AM DET

AM ANTD
WIDE AGC

FM MUTE
ON ADJ

RF AGC

2nd MIX IN

FM IF BYPASS

VSM
SHIFTER

FM IF
IN

1st IF OUT

AM MIX OUT

AM SD ADJ

WIDE AGC IN

1st IF IN

AM RF AGC OUT

N-AGC IN
MUTE ATT ADJ

MIX OUT

FE VCC

1st IF
Narrow IN

AM 1st
MIX IN

FM
MIX IN

3.3

0.022

0.01

0.47

0.01

0.022

0.015

6800pF

0.01

30k

350

51k

30k

10k

22k

51k

10k

11k

300

51k

470

100k

510

10k

24k

30k

12k

62k

82k

560

56k

33k

1000pF

10k

50k

5.6k

47k

100k

51k

10k

100k

10k

10pF

300pF

150pF

100pF

30pF

VCC=8V

FM ANT IN

5pF

AGC

HPH

HOLE

DET

F.F.19k

PHASE
COMP.

VCO

PILOT

DET.

CCB

I/F

POWER

RESET

PHASE

DETECTOR

CHARGE

PUMP

F.F.19k

F.F.30k

F.F.

PILOT

CAN.

UNTVERSAL

COUNTER

DATA SHIFT REGISTER

LATCH

12Bits

PROGRAMMABLE

DIVIDER

SWALLOW
COUNTER

1/16,1/17 4Bits

REFERENCE

DIVIDER

TRIG

HCC

SNC

VCO

STOP

OC-C

DET

AFC

CI AMP

LPF

TRIG

GATE

—

MIX

ANT

OSC

BUFF

OSC

Q.DET

MUTE

AMP.

MUTE

DRIVE

DET

AGC

L.C.

BUFF

OSC

BUFF

1ST

OSC

BUFF

IF LIMIT

AMP.

Keyed

AGC

MAIN

SUB
DEC

MAT

RIX

F.E

REG

FM/AM

SWITCH

AM/FM

VREF

W.B AGC

RF AGC

AM SM

AM SD

FM SM

FM SD

IF BUFFER

MRC

RF AGC

WB AGC

0.015

0.22

3.3

15pF

0.022

100

0.022

FC18

100

1MH

0.022

100

2.2

0.47

0.22

2200pF

0.1

0.47

0.01

0.22

0.47

0.01

0.022

Pdot C
ADJ

100pF

24pF

10.25

MHz

PLL VDD=5V

FM BF GND

L-CH

CF SW

R-CH

FMIF AMNC

MPX VCC

FM/AM

FMIF AM

GND

SEEK AM/FM SD
STOP FM ST IND
SDSTSW

I/O-1

To
micro
controller

MUTE
OFF(RDS)

AM
(STEFEO)
IF OUT

MRC
SENOR
AUTO ADJ

200k

100

100k

220

30k

100k

150

0.022

5pF

0.022

0.1

0.022

100

1000pF

37pF

6pF

1000pF

8pF

1000pF

18pF

62pF

AM ANT IN

AM V

L5P

L5M

LVref

Vref

VDD

RVref

R5M

R5P

LVref

LSELO

LVRIN

LCT

LCOM

LTIN

LF1C1

LF1C2

LF1C3

LF2C3

LVROUT

220pF

68k

4.7k

0.1

LF2C1

LF2C2

0.01

0.001

LF3C3

LTOUT

LF3C1

LF3C2

[BASS fo 100Hz]

[ M I D fo 1kHz]

[TREBLE fo 10kHz]

LFIN

LFOUT

LROUT

LAVSS

TEST

0.033

RROUT

TIM

RFOUT

RFIN

RTOUT

RF3C3

RF3C2

RF3C1

RF2C3

RF2C2

RF2C1

0.1

RVref

RF1C3

RF1C2

RF1C1

RTIN

RVROUT

RCOM

RCT

RVRIN

RSELO

DVSS

47k

MUTE

RAVSS

RVref

NO SIGNAL

TIMER

ZERO-CROSS DET

CONTROL

CIRCUIT

4.7k

68k

220pF

LVref

0.1

0.01

0.001

Micro
controller

CCB

INTERFACE

Multiplexer

LOGIC CIRCUIT

[BASS fo 100Hz]

[ M I D fo 1kHz]

[TREBLE fo 10kHz]

Car Audio

The LA17000M is a car audio system tuner IC that integrates both a PLL frequency synthesizer and all AM/FM
functions on a single chip. The LA17000M combines the functions of two ICs, a PLL IC (such as the LC72144)
and an FM tuner IC (such as the LA1781M) on a single chip that provides PLL, AM (upconversion), FM FE, FM IF,
NC, MCP, and MRC functions. The LA17000M achieves increased performance, adjustment-free manufacturing,
and high reliability at low cost in car tuner systems by providing an optimal functional allocation in the IC.

Car Audio Tuner IC with Built-in PLL Circuit

■

Built-in PLL

◆

A/D converter (6 bits, 1 channel)

◆

IF counter and I/O ports for simplified interface

design

◆

Supports AM double conversion reception

■

Strengthened noise reduction

◆

Superlative three-signal characteristics

◆

Improved weak and medium-field NC

characteristics

◆

Improved separation characteristics

◆

Built-in anti-birdie filter (analog and digital outputs)

◆

Anti-multipath sensor outputs

(analog and digital outputs)

■

Support for lower costs

◆

AM double conversion (upconversion)

◆

Improved FM IF circuit (automatic wide/narrow

ceramic filter switching under adjacent channel
interference conditions)

◆

IF gain sample-to-sample variations reduced to 1/3

that in previous devices. This simplifies end product
adjustment during manufacture. Furthermore,
a shifter pin is provided for VSM adjustment.

■

Supports end product miniaturization

◆

High-frequency signal lines can be handled within

the tuner pack.

◆

Easily meets FCC requirements

■

Package: QFP80 (14 14 mm)

Micro controller

Block Diagram

The LC75410E/W is an electronic volume and tone control IC that implements a rich set of audio control
functions with a minimal number of external components. Functions include volume, balance, fader,
bass/midrange/treble, and loudness controls, as well as input selection/switching functions and an input
gain control.

Electronic Volume and Tone Control IC for
Car Audio Systems

Overview

Functions

Features

:CCB is SANYO's original bus format.
All bus addresses are managed by
SANYO for this format.

■

On-chip buffer amplifiers reduce the number of external components

■

Internal switches are implemented in a silicon gate CMOS process that minimizes the noise generated when switching.

This results in low noise even when switching in the no-signal state.

■

Zero-cross switching circuits used for low noise even when input signals are present

■

Built-in VDD/2 reference voltage generation circuit

■

All functions are controlled using serial data (CCB)

■

Packages: LC75410E: QIP64E (14 14 mm)

LC75410W: SQFP64 (10 10 mm)

■

Volume control: A total of 161 positions from 0 dB to -79.5 dB in 0.5 dB steps and -

∞

dB.

A balance function can be implemented by controlling the left and right channel volume controls separately.

■

Fader control: The rear or front outputs can be attenuated by one of 16 levels

(A total of 16 settings with attenuations of 0 to -2 dB in 1dB steps, -2 to -20 dB in 2 dB steps, -20 to -30 dB in 10 dB steps,
and -45, -60, and -

∞

dB settings.)

■

Bass/midrange/treble controls: Each band can be controlled in 1 dB steps from 0 dB to

6 dB, and in 2 dB steps from

8 dB to

12 dB

■

Input gain control: The input signal can be amplified by 0 to +18.75 dB in 1.25 dB steps

■

Input switching: One of five input systems (left and right channels) can be selected

(Four of the input systems are single-ended inputs, one uses differential inputs.)

■

Loudness control: The -32 dB position of the 2 dB step volume control ladder resistor can be tapped and a loudness

function implemented with external capacitor and resistor components

❋