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LC-19D1E/S-BK/WH

5 – 8

LC-19D1E/S-BK/WH

5 – 9

A/V SWITCH (12C BUS)

1

V1-V

Video input terminal

3

V1-Y

(Composite or Y)

7

V2-V

*Sync chip clamp

9

V2-Y

13

V3-V

I

16

STV-V

19

YIN2

32

YIN1

41

MTV-V

2

V1-L

Audio input terminal

4

V1-R

8

V2-L

10

V2-R

14

V3-L

I

15

V3-R

17

STV-L

18

STV-R

40

MTV-R

42

MTV-L

5

V1-C

Video input terminal

11

V2-C

I

(Croma)

21

CIN2

31

CIN1

6

S1

I

Distinction 3-effects input terminal

12

S2

DC Detect

20

ADR

I

Sleve address select

30

MUTE

Audio Mute terminal

27

GND

-

Ground.

22

VOUT2

O

Composite video out

35

VOUT1

23

ROUT2

Audio out terminal

25

LOUT2

O

33

ROUT1

34

LOUT1

24

COUT2

S-Video out terminal

26

YOUT2

O

37

YOUT1

39

COUT1

28

SDA

I/O

Data input from I2C

29

SCL

I

CLK input from I2C

36

BIAS

I

Internal bias terminal

38

VCC

-

Power Supply.

LC-19D1E/S-BK/WH

5 – 10

RS232C-DRIVER/RECEIVER

1

EN

I

Receiver Enable Control . Drive low for normal operation. Drive high to force the receiver outputs (R_OUT) into 
a high-impedance state.

2

C1+

 -

Positive terminal of the voltage doubler Charge-Pump Capacitor

3

V+

 -

 +5.5V generated by the charge pump

4

C1-

 -

Negative terminal of the voltage doubler Charge-Pump Capacitor

5

C2+

 -

Positive terminal of inverting Charge-Pump Capacitor

6

C2-

 -

Negative terminal of inverting Charge-Pump Capacitor

7

V-

 -

 -5.5V generated by the charge pump

8

R_IN

I

RS-232 Receiver Inputs

9

R_OUT

O

TTL/CMOS Receiver Outputs

10

INVALID

I

Output of the Valid Signal Detector. INVALID is enabled high if a valid RS-232 level is present on any receiver 
input.

11

T_IN

I

TTL/CMOS Transmitter Inputs

12

FORCEON

I

Drive high to override automatic circuitry keeping transmitters and charge pump on (FORCEOFF must be high)

13

T_OUT

O

RS-232 Transmitter Outputs

14

GND

 -

Ground

15

VCC

 -

 +3.0V to +5.5V Supply Voltage

16

FORCEOFF

I

Force-Off Input, active low. Drive low to shut down transmitters, receivers (MAX3243E, except R2OUTB), and 
on-board charge pump . This overrides all automatic circuitry and FORCE ON

LC-19D1E/S-BK/WH

5 – 11

 1ch Step Down switching regulato

1

RT

---

Timing Resistor  external terminal.

2

CT

---

Timing Capacitor external terminal.

3

ENB

I

Control terminal.

4

GD

O

Gate drive output terminal.

5

VCC

---

Power supply terminal.

6

GND

---

Ground.

7

COMP

O

Error amplifier output terminal.

8

FB

I

Error amplifier inverting input terminal.