2

Multimedia ICs

BA7786FP-Y / BA7787FS

1

2

3

4

5

6

7

8

9

10111213

14

15

16

17

18

19

20

21

22

23

24

25

VR

VR

BA7786FP-Y

Pin No.

Pin name

Function

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

EVR CTRL

EVR control pin

25

Voltage

Type

—

B (NPN)

LINE IN L

Line Lch input

2.5

B (PNP)

MUTE CTRL

Headphone mute control pin

5.0

100k

Ω PULL UP

LINE IN R

Line Rch input

2.5

B (PNP)

BIAS

Bias

2.5

23.5k

Ω

SYSTEM BEEP IN

SYSTEM BEEP input

2.5

B (NPN)

BEEP LEVEL

SYSTEM BEEP IN output level setting

4.2

C (PNP) ~ 3k

Ω

LCH OUT

LINE IN L + SYSTEM BEEP IN output

—

C (PNP)

PM BEEP IN

PM beep input

2.5

B (NPN)

SP OUT1 L

BTL speaker Lch output (forward)

2.5

EF (NPN)

SP OUT2 L

BTL speaker Lch output (reverse)

2.5

EF (NPN)

HP SUSPEND

Headphone SUSPEND control

5.0

100k

Ω PULL UP

SP SUSPEND

Speaker SUSPEND control

5.0

100k

Ω PULL UP

SP GND

Speaker ground

0.0

—

MONO / ST

Speaker amplifier Lch ON / OFF control

5.0

100k

Ω PULL UP

SP OUT2 R

BTL speaker Rch output (reverse)

EF (NPN)

SP OUT1 R

BTL speaker Rch output (forward)

2.5

EF (NPN)

LINE MIX ON / OFF

SP IN L / R input ON / OFF control

5.0

100k

Ω PULL UP

Speaker Vcc

5.0

—

SP IN R

Speaker Rch input

2.5

B (NPN)

SP IN L

Speaker Lch input

2.5

B (NPN)

HP GND

Headphone ground

0.0

—

HP OUT R

Headphone Rch output

2.5

EF (NPN)

HP OUT L

Headphone Lch output

2.5

EF (NPN)

Headphone Vcc

5.0

—

2.5

Note) The pin formats are as follows. EF: emitter follower; B: base; C: collector; ~ : series connection.

and do not guarantee standards.

BA7786FP-Y