LV7109E

No.A1992-11/24

* indicates initial.

ADDRESS

8 7 6 5 4 3 2 1 Symbol

Input

Output

Remarks

Group 8

0000 1000

N/A

N/A

0 0 0 0 0 0

-

-

N/A

0 0 1 1 0 0

-

-

N/A

1 1 1 1 1 1

-

-

N/A

*

Other than above

-

-

PROHIBIT

N/A

0

-

-

N/A

*

1

-

-

N/A

N/A

0

-

-

N/A

*

1

-

-

N/A

Cautions for Use

1. Drive capacity of video driver

Line outputs can drive two systems through capacitive coupling.

Component outputs can drive one systems through capacitive coupling.

Scart output can drive one system only through DC coupling.

2. Audio Mute

This IC incorporates a mute transistor to reduce the POP noise of audio output when power is turned ON/OFF.

Mute control can be made by serial control.

3. Resistor to limit the Audio input

When the large signal is input in the input pin with power OFF, cross-talke between input and output occurs through the

protective diode and parasitic elements. Because of the structure of LSI, such cross-talke is difficult to avoid.

If cross-talk at a time of power OFF presents a problem, the cross-talk amount can be reduced by inserting the limiting

resistor in the input.

In this case, the input signal level changes depending on the resistance value. Determine the constant while taking both

the cross-talk amount and input level into account.

4. Pin treatment when external control is not to be used

When external control pins (Pins 26) are not used, pull-down to GND is recommended.

5. Audio 9V_REG pin external capacitance

Use the Audio 9V_REG pins (pins 52 and 57) external capacitance of 10

μF or more and with the equivalent series

resistance component of 7

Ω or less.

6. Power application and disconnection sequences

The recommended power application sequence to this IC is VCC_ALL5V (Pin28) → VCC5V (Pins 5, 9, 13, 24, 30 and

43), VCC12V (Pin29).

(No particular order is established between VCC5V and VCC12V.) It is recommended to reverse the above sequence

when power supply is turned OFF.