BU9253AS-E2 查看數據表（PDF） - ROHM Semiconductor

零件编号

产品描述 (功能)

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BU9253AS-E2

Karaoke/Surround Digital Echo

ROHM Semiconductor 

●Pin description, Block diagram, Application circuit

＜BU9262AFS＞

・Description of terminal

・Block diagram

No. Symbol

Function

1

NC

Not connected

2

TESTB Test negative logic input pin (normally “H” input)

3

SCK

Serial clock input

4

SLT

Serial latch input

5

SI

Serial data input

6

CLKO Oscillation output pin

7

CLKI

Oscillation input pin

8

NC

Not connected

9

DSOUT Delay source output

10 TESTOUT Test output pin (normally “L” output)

11

LPF1I1

12

LPF1I2 LPF capacitor external pin

13

LPF1O

14

ADI

ADC capacitor connection pin

15

ADO

16

GND

GND pin

17

DAI

DAC capacitor connection pin

18

DAO

19

LPF2I1

20

LPF2I2 LPF capacitor external pin

21

LPF2O

22

VOIN Delay signal / volume input pin

23

DSIG Delay signal output

24

VREF Analog reference voltage

25 RCOUT Rch output

26

LCOUT Lch output

27

FBOUT Feedback signal output

28

RCIN Rch input

29

LCIN

Lch input

30

VCC

Power source pin

31

MICIN Microphone input (microphone amplifier output connected)

32

MIXIN Mix signal input

・Application circuit

1

DLYVOL

32

2

Tテesスt mトoモdeーnドeg　a負tiv論e 理log入ic力input

31

Cコoンntrトolロール

3

Seシriaリl アル

4

cコonンtトroロl ール

Input mixer

se入le力cミtoキr サ

30

セレクタ

29

circu回it路

5

28

6

Cクloロcッk ク

7

8

Out出p力ut

mミiキxiシngング

27

＋

26

＋ 25

9

10

Tテesスt トmoモdーe oドu出tp力ut

11

12

LPF

13

＋

FBVOL

RAM

Rv基oeltf準aegr電een圧ce

24

23

Rリeセseッt ト

22

21

LPF

20

14

ADC

15

16

Pro処ces理sing

19

18

DAC

17

Fig.28 Block diagram

・Pin assignment

NC 1

TESTB 2

SCK 3

SLT 4

SI 5

CLKO 6

CLKI 7

NC 8

DSOUT 9

TTEESSTTOOUUT 10

LPF1I1 11

LPF1I2 12

LPF1O 13

AD I 14

AD O 15

GND 16

32 M IXIN

31 M ICIN

30 VC C

29 LCIN

28 RCIN

27 FBO UT

26 LCO UT

25 RCOUT

24 VR EF

23 DSIG

22 VO IN

21 LPF2O

20 LPF2I2

19 LPF2I1

18 D AO

17 D AI

Fig.29 Pin assignment

＋

47u

SERIAL CLOCK

SERIAL LATCH

SERIAL DATA

R

R

2MHz

1u NP

0.01u

2200p

0.01u

1

2

Tテesスt mトodモeーneドga　tiv負e l論og理ic 入inp力ut

3

Seシriリalアル

4

コcoンnトtroロl ール

circu回it路

5

6

Cクloロcッkク

7

8

9

10

Tテeスsトt 出o力utput

11

12

LPF

13

＋

FBVOL

RAM

14

ADC

15

Pr処oce理ssing

16

DLYVOL

Input mixer

s入el力ecミtoキr サ

セレクタ

Output

＋

mミiキx出iシn力gング

＋

Rv基oeltf準aegr電een圧ce

LPF

32

＋

31

30

＋

29

＋

28

27

＋

26

＋

25

24

＋

23

22

21

20

0.1u

1u

1u

1u

0.33u R 1M

2.2u

2.2u

＋

2.2u

47u

0.1u

2200p

MIC IN

Lch IN

Rch IN

Lch OUT

Rch OUT

DSIG

19

DAC

18

17

0.01u

0.01u

Fig.30 Application circuit

8/16

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