Sanyo EP93F manual LA1776M New, Productt

System-on-Chip Tuner IC for Car Stereo Systems

LA1776M New

productt

Overview

The LA1776M is a car radio AM/FM tuner IC that is based on the current LA1787M but features improved AM upconversion (for improved reception characteristics) and improvements in most other characteristics as well. The LA1776M pin arrangement is only slightly changed from the LA1787M for easy printed circuit board pattern design.

Functions
■ FM front end	■ FM IF	■ Noise canceller	■ MRC
■ Multiplex	■ AM upconversion	■ FM/AM switch

Features

■Characteristics improved by new noise prevention measures in the mixer and amplifier blocks

■Three-signal characteristics improved due to increased dynamic range in the FM front end mixer

■Improved AM practical sensitivity and saturation signal-to-noise ratio

■FM S-meter shifter function can adjust for sample-to-sample variations in the S-meter

(Fixed resistors are used for SD, KEYEDAGC, MUTE ON ADJ, MUTE ATT, SNC, and HCC.)

■High-speed search is possible using the FM band muting time constant switching function

■The low power consumption of the earlier device has been reduced even further

■Increased flexibility in the MRC setting

■Package: QIP64E (14 14 mm)

Block Diagram

ST IND 5V

AM/FM SD

F0.022∝

F0.022∝

AGC-RF

BYPASS

IFT-AM

AM-IF-AGC

MUTE-ON

KEYEDAGC

PILOT-DET

FM-SD-ADJ

0.022∝F

1

9p

2.7V

MUTE-DRIVE

FM-VSM 1000p

BV

D - ANT - AM

IN - WAGC - AM

F ∝

3.3

ADJ

10k

F 1 ∝

LC AM

F 100 ∝

VCC

SD AM/FM IND ST

100k

30k

1.3k

+

F 2.2 ∝

VCC

56k∝F

0.022∝F

+

+

+

+

F∝

+

75

100k

AM 2nd

48

47

46

45

44

43

42

41

40

39

38

37

36

35

34

33

min:5k

MIX IN

49

32

Electronic Tuninguning ETRETR ControllersControllers

LC723500 SeriesSeries

Overview

The LC72350 Series (LC72358N, LC72362N, and LC72366) are system-on-chip electronic tuning microcontrollers with a 1.33 ∝s instruction execution time.

These devices include both a high-speed locking circuit and a high-performance direct PLL circuit that can control the local oscillator C/N characteristics.

Functions

■ROM: 16 KB (LC72358N) 24 KB (LC72362N)

32 KB (LC72366)

■RAM: 512 nibbles (LC72358N and LC72362N) 1024 nibbles (LC72366)

■A/D converter: 6-bit successive approximation A/D converter with 6 input channels

■PLL: Built-in sub-charge pump for high-speed locking, built-in dead zone control

■Serial I/O: Three channels (8-bit 3-wire serial I/O)

■Multiple interrupt support: 4 levels

■Cycle time: 1.33 ∝s (4.5 MHz)

■QTP version: LC72P366

■Package: QIP80E (14 20 mm)

Block Diagram

EO1

EO2

BUSPD

EO3

PPQ

PP3

PP2

PP1

PP0

PO3

PO2

PO1

PO0

PN3

PN2

PN1

PN0/BEEP

PM3

PM2

PM1

PM0

PL3

PL2

PL1

PL0

PK3

PK2

PK1/INT1

PK0/INT0

PJ3

PJ2

PJ1

PJ0

PI1/ADI5

PI0/ADI4

PH3/ADI3

PH2/ADI2

PH1/ADI1

PH0/ADI0

PHASE DETECTOR

MPX

BEEPTONE

INTERUPT

SUB C.P

PHASE DETECTOR

DATA LATCH

BUS

DRIVR.

DATA

LATCH

BUS

DRIVR.

DATA

LATCH

BUS

DRIVR.

DATA

LATCH

BUS

DRIVR.

DATA

LATCH

BUS

DRIVR.

DATA

LATCH

BUS

DRIVR.

DATA

LATCH

BUS

DRIVR.

DATA LATCH

BUS

DRIVR.

BUS

DRIVR.

MPX

DATA

LATCH

BUS DRIVR.

IOS

IOS

IOS

IOS

IOS

620		1M
			100∝F
	FC18G	15p	15p

	FM-IF-IN2		50
0.022∝F	100	220			AMDET
						MUTE
			51	AM	AMLC
				IF2
	AM-IF-IN		52	AM	AMIF	ANT D
						AM
		AM-IF-OUT			AGC
				IF1		AGC
		FM-IF-OUT 53		AM MIX	AM	drive
	AM-MIX-OUT
			54		Vsm	AM
		FM-WB-AGC				W-AGC

	MUTE				3
	drive
IF-AMP				1	2
IF-AMP
IF-AMP		FM AFC
IF-AMP			H det
IF-AMP
			s mute

IF-AMP

				DET-OUT
				31∝F		+	8200p
Q.DET	REG	SW			0.22		68k
	2.7V			30 NC-IN			+0.22∝F
MUTE	REG	IF	MRC	29 HCC			30k
	NC.MPX	count AMP
AMP.	REG		out2	28	SNC
		IF					3.3∝F
Mute	FM IF			MRC-OUT
		count SW	time
ATT				27			+
			const
control				GAD

CONTROL	BUS CONTROL	INSTRU- CTION DECODER	SKIP		JUDGE	read/sritc status register	read only status register
			JMP CAL RETURN INTERRUPT RESET	CF				ADC (6 bits)

∝

AM-SD-ADJ AM

100 F	100k 100∝F	+
30M
0.022∝F	0.022∝F	470
		0.022∝F

100k			55		X OSC	AM
	100k	RF-AGC				N-AGC
			56
		AM-IF-IN1
200		FM-IF-IN1	57	1ST		KEYED
	6p AM-NB-AGC			IF		AGC
				AMP
	IN	MUTE-ATT	58
					LEVEL	W-AGC
		MIX-OUT			DET
			59

Zap

FM Vsm

0.022∝F	22∝F	+	30
		1000p
		100k
	1000p

		MIX-OUT
3p	33	FE	60	AM/FM MIX		N-AGC
		VCC	61
	AM-MIX-IN		62		AM OSC	AM OSC
	MIX-IN10p			FM RF
					BUFF
			63	AGC
					FM OSC	FM OSC
		10p
			64	ANT-D	BUFF

MIX-IN

NC		NC
HPF	LPF
ECL
ECL	-	+

ECL

ECL

NC TRIG AGTE

ECL AGC

SVC208

100k 100k

1

2

GNDFE

4

5

33k

SEN

8

9

1000p

100k

180

F0.1∝

0.001∝F

FMANT D

RF1FM -AGC

SVC208 18p

8p FMOSC

33p 22p

1000p

NOISEAGC 150k 0.47∝F

AGCADJ AM/FM OSCBUFF

300p

OSC

15p

1000p

+

+

220k

AGC

1000p

100

100k

30k

AM

REG		REG		FM/AM			26	+	MRCADJ
						MRC
BUFF			AM	SD-ST IND				3.3∝F 51k
						noise
		REG		AM/FM		amp	25 GND
								AM/FM VSM		∝
			FE
				SW			24	+	0.022 F
								IF COUNT
							23 BUFFER
							PHASE-COM
			VCO	phase		tri	22	PHASE-		+
	HCC			comp		ger
			stop				21 COM		+
						pilot
	SNC		FF 38k	FF			20 VCO
						det
				19k					CSB
						pilot	SEP-ADJ912kHz
			FF	VCO		can	19	20k 0.047∝F
						Sud De	18
									100k
			Main			coder
					MATRIX		PI-CAN
			HC				17 OUT
10	11	12	13	14	15	16	PI-CAN 0.01∝F
								IN
6800p		PLL IN	10.25M IN	NC,MPX GND	MPX OUT L 0.015∝F	MPX OUT R 0.015∝F
HOLD	LPFOUT 0.01∝F

0.022∝F

47k IF Buffer

5/2.5/0V

REFERENCE DIVIDER

PROGRAMABLE DIVIDER

PLL Data Latch PLL

ADDRESS DECODER

(LC72366) BANK

PROGRAM COUNTER

STACK BANK

DO

JDC CCD

DATA BUS

Time PHASE CONTROL UNIVERSAL COUNTER (20 bits)

RAM 512k 4bits

(LC72358/362)

1024k 4bits

8k 16bits

(LC72358)

12k 16bits (LC72362)

16k 16bits (LC72366)

ADDRESS DECODER

LATCE A ALU

B INTERRUPT

CSUST

1/114,1/124

ROM

14

14

LATCE

TIMER 0

TIMER 1

DIVIDER

SYSTEM CLOCK GEMERATOR

1/16,1/17

SNS

SNS F/F

VDET RESET

RESET

1/2

BUS

DRIVR.

DATA

LATCH

BUS DRIVR.

DATA

LATCH

BUS

DRIVR.

DATA

LATCH

BUS DRIVR.

DATA LATCH IOS

BUS DRIVR.

DATA

LATCH IOS

BUS

DRIVR.

ISO

3

DATA LATCH IOS

BUS DRIVR.

XIN

SNS

VDD VSS

PA0

PA1

PA2 PA3

PB0

PB1

PB2

PB3

PC0

PC1

PC2

PC3

PD0

PD1

PD2

PD3

PE0

PF0

PG0

AM VCC 8V AM ANT AM/FM ANT IN FE GND AM/FM VT FE VCC AM/FM SW AM/FM 10.25kHz IN L-ch R-ch GND VCC FM/AM VSM

OSC BUFF

XOUT FMIN AMIN HCTR LCTR MOLD TEST1 TEST2 PCK2/PE1 SO2/PE2 SI2/PE3 PCK1/PF1 SO1/PF2 SI1/PF3 PCK0/PG1 SO0/PG2 SI0/PG3

51 Car Audio 52 Car Audio