Mitsubishi M62465FP Datasheet

ELECTRIC

MITSUBISHI

PRELIMINARY

Control

Sequencer

Adaptive

control

Trim

LPF-IN

LPF-OUT

NR-IN

L-R2L+R

2

Notice ; This is not a final specification. some parametric limits are subject to change.

MITSUBISHI SOUND PROCESSORS

M62465FP

Dolby Pro Logic Surround

DESCRIPTION

Outline

The M62465FP is a single chip LSI supporting the Dolby Prolgic surround.This LSI contains all functions necessary for Dolby Pro Logic surround. In addition,it has Digtal Space Surround functions (Disco,Hall,Live mode etc.) and echo function for karaoke. Note:Use of this LSI requires the license of Dolby Laboratories Licensing Corporation

Dolby and the double-D symbol are trademarks of Dolby Laboratories Licensing Corporation.San Francisco,CA94103-4813,USA. This device available only to licensees of Dolby Lab. Licensing and application information may be obtained from Dolby Lab.

Features

(Mode)

Outline 80P6N

0.8mm pich QFP (20.0mm×14.0mm×2.8mm)

Upper compatible for M62460FP and less external parts than M62460FP. Includes all functions requires for Dolby Pro Logic Surround.

•Adaptive Matrix.

•Noise Sequencer by digital noise source and switched capacitor filter.

•Center Mode Control(Wide/Normal/PHANTOM/OFF).

•Modified Dolby B Type Noise Reduction.

•4ch/3ch Stereo Selectable.

•Digital Delay: 15.4, 20, 28.6ms for Dolby Pro Logic Surround. C/Sch Trimmer: 0 to -31dB/1dB Step. Digital Space Surround Mode: Disco/Hall/Live mode and 5 delay time positions. Digital Echo function for KARAOKE: (Short echo) Delay time=147.5ms, (Long echo) Delay time=196.6ms. BY-PASS Mode: Input signal through output.

System Configuration

Lch IN

Rch IN

MIC IN

Input AutoBalance

S

Digital Noise

Digital Delay

Matrix

7kHz LPF

Modified Dolby B-NR

( / )

1

L R

C

Center/ operating mode

S

MCU Interface

SCK

DATA

24

Center

Surround

REQ

L

R

C

S

Master Volume Control

Lch

Rch

CENTER

SURROUND

ELECTRIC

MITSUBISHI

PRELIMINARY

Notice ; This is not a final specification. some parametric limits are subject to change.

PIN CONFIGURATION

MITSUBISHI SOUND PROCESSORS

M62465FP

Dolby Pro Logic Surround

FILTER

LOUT

ROUT

CT

COUT

ST

SOUT

CMC

SMRO

SMRI

AGND

MIC IN

DVdd

TEST CNT

DATA

SCK

REQ

RLC8 RLC3 RLC7 RLC4 RLC1

RLC2 RLC5 PSC4 PSC1 PSC5 PSC2 PSC6 PSC3 DBC3 DBC2 DBC1

LPIN LO1 LO2 LO3

XIN

XOUT

DVss

AVss

(Note) The function of pin No. 1,79,80 is different from that of M62460FP.

2

( / )

24

DBIN

S' OUT

FBIN SU

FBIN EC

DELAY SIG OUT

DELAY SIG IN

VOL OUT

ELECTRIC

MITSUBISHI

PRELIMINARY

Digital NOISE

SEQUENCER

L+R L-R

COMBINNING

NETWORKS

IREF

VREF

SELECTOR1

MOS

SFB

MIX

MIC

L+R2L-R2SU

EC

1/2 Vcc

Notice ; This is not a final specification. some parametric limits are subject to change.

BLOCK DIAGRAM

MITSUBISHI SOUND PROCESSORS

M62465FP

Dolby Pro Logic Surround

FILTER

LOUT

ROUT

CT

COUT

ST

SOUT

CMC

SMRO

SMRI

AGND

MIC IN

DVdd

TEST CNT

DATA

SCK

REQ

LO1 LO2

16kSRAM

RLC8 RLC3 RLC7 RLC4 RLC1 RLC2

VCA

RLC5 PSC4 PSC1 PSC5 PSC2 PSC6 PSC3 DBC3 DBC2 DBC1 LPIN DBIN

S' OUT

LO3

XIN

XOUT

DVss AVss

FBIN SU

LPF

LOGIC

A/D

D/A

LPF

FBIN EC DELAY SIG OUT DELAY SIG IN VOL OUT

(Note) The function of pin No. 1,79,80 is different from that of M62460FP.

( / )

3

24

ELECTRIC

MITSUBISHI

PRELIMINARY

with external resistance.

when the operation

Discription of pin

Notice ; This is not a final specification. some parametric limits are subject to change.

Discription of pin

MITSUBISHI SOUND PROCESSORS

M62465FP

Dolby Pro Logic Surround

No. Symbol

2

3

4

5

6

LOUT

ROUT

CT

COUT

ST Sch output

Funtion Equivalent circuit

Lch output

Rch output

Cch output

Voltage

Direct output R-/ Lchannel when the operation mode is BY-PASS.

4V

When the mode is 4channel, they output Dolby prologic R-/ L-channel signals.

No output any signals

mode is center mode is OFF or set to PHANTOM.

4V

COUT is output from C.Trimmer.

This pin output surrund signals.Output is selected from BNRout,Dout No output signal when the operation mode is

4V

3STEREO/MUTE.

Vcc

2 3

4 5

6

7

9

10

SOUT Sch output

SMRO

SMRI

amplifier output

amplifier input

SOUT is output from S.Trimmer.

This is a amplifier to control mixed level

4V

of surround output

( / )

4

24

Vcc

9

Vcc

10

ELECTRIC

MITSUBISHI

PRELIMINARY

VREFD

with ECHO MODE

No.

Voltage

Discription of pin

Notice ; This is not a final specification. some parametric limits are subject to change.

Symbol Funtion Equivalent circuit

MITSUBISHI SOUND PROCESSORS

M62465FP

Dolby Pro Logic Surround

Vcc

12 MIC IN MIC input 4V

14 TEST CNT

15

16

17

18

DATA

SCK

REQ

LO1

TEST control

serial data "DATA" input

serial data "SCK" input

serial data "REQ" input

0

Microphone input

Fixed to GND

input via serial data from MCU.

0

15

16 17

14

12

18

19

buffer

20

19

20

21

22

26

LO2

LO3

XIN

XOUT

port output

Osillator input

Osillator output

reference output

Open collector output pin (NPN Tr)

connect 4 - MHz ceramic resonator

1/2 Vcc output.

2.5V

Connect a filter capacitor.

( / )

5

24

21

22

26

ELECTRIC

MITSUBISHI

PRELIMINARY

VOL OUT

input from mixing

with ECHO MODE

S',L+R,L-R and

from a mixing amplifier

with SURROUND MODE

Discription of pin

Voltage

Notice ; This is not a final specification. some parametric limits are subject to change.

MITSUBISHI SOUND PROCESSORS

M62465FP

Dolby Pro Logic Surround

No.

27

28

40

41

Symbol

MIX OUT

DELAY IN delay input

LPF2 OUT

Funtion

MIC output

delay signal output

output of a delay volum

Signal output precedent to delay generator.

4V

that is S',L+R,L-R and MIC output.

This is s delay input. Please input by AC

2.5V cuppring.

delay signal output

2.5V

This is output of a delay volum that possible to control +3dB to -∞.

Equivalent circuit

Vcc

27

28

40

41

42

43

44

45

DELAYSIG IN

DELAYSIG OUT

FBIN EC

FBIN SU

amplifier

Feedback signal input

Delay signal input to

4V

a mixing amplifier

Delay signal output

4V

Feedback signal input

4V

Feedback signal input

Vcc

42

Vcc

43

Vcc

44 45

( / )

6

24

ELECTRIC

MITSUBISHI

PRELIMINARY

Please pul-up to VREF

Autobalance

Negative input

with external resistances

Always outputs

No.

Voltage

Discription of pin

Autobalance output.

Autobalance

Notice ; This is not a final specification. some parametric limits are subject to change.

Symbol Funtion Equivalent circuit

MITSUBISHI SOUND PROCESSORS

M62465FP

Dolby Pro Logic Surround

46

47

48 LPIN

S'OUT Sch output 4V

DBIN

LPF output

of LPF

Sorround channel output precedent to delay generator.

signals,irrespectiv of the operation mode (2-/3-/4-channel)

This amplifier compornent 7KHz-LPF

4V

and capaciters. LPF output is conected to input of Modifide BNR.

Vcc

46

Vcc

47

Vcc

48

72

73

70

71

LIN

RIN

LT

RT

Lch input

Rch input

Lch output

Rch output

Input of Lch and Rch that is non-inverted input type.

4V

by external resistances for DC bias.

4V

( / )

7

24

Vcc

72 73

Vcc

70 71

ELECTRIC

MITSUBISHI

PRELIMINARY

Vcc

VREFA

VREFG

Voltage is the fixed at 4V.

No.

Voltage

Discription of pin

reference voltage except

Auxiliary 1/2Vcc

Notice ; This is not a final specification. some parametric limits are subject to change.

MITSUBISHI SOUND PROCESSORS

M62465FP

Dolby Pro Logic Surround

76

77

1

Symbol Funtion

reference voltage input

reference voltage output

FILTER

New future of M62465FP

1/2Vcc

It is a reference voltage input terminal to each circuit inside the IC.

Reference voltage output.

4V

The terminal which make a 1/2Vcc voltage

1/2

by the resistance. When it is used,a filter capacitor is connected.

Equivalent circuit

76

Vcc

77

Vcc

1

79

80

REF OUT

New future of M62465FP

NSQ

New future of M62465FP

reference generator.

1/2Vcc output

Noise sequencer monitor

1/2Vcc voltage output. It is used to change

1/2

4V.

Noise sequencer

4V

monitor output. It is only for test.

Vcc

79

Vcc

80

( / )

8

24