HA12229F データシートの表示（PDF） - Renesas Electronics

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HA12229F

Audio Signal Processor for Car Deck (Decode only Dolby B-type NR* with PB Amp.)

Renesas Electronics 

HA12228F/HA12229F

Operating Mode Control

HA12228F/HA12229F provides fully electronic switching circuits. And each operating mode control are controlled by

parallel data (DC voltage).

When a power supply of this IC is cut off, for a voltage, in addition to a mode control terminal even though as do not

destruct it, in series for resistance.

Table 2 Threshold Voltage (VTH)

Pin No.

17, 18, 19, 20, 21*

Lo

–0.2 to 1.0

Hi

3.5 to VCC

Unit

V

Test Condition

Input Pin Measure

V

Note: * Non connection regarding HA12229F.

Table 3 Switching Truth Table

Pin No.

Pin Name

Lo

Hi

17

Forward/Reverse

Forward

Reverse

18

Search/Repeat

Search (FF or REV)

Repeat (Normal speed)

19

120 µ/70 µ

70 µ (Metal or Chrome)

120 µ (Normal)

20

MUTE ON/OFF

MUTE-OFF

MUTE-ON

21*

NR ON/OFF

NR-OFF

NR-ON

Notes: * Non connection regarding HA12229F.

1. Each pins are on pulled down with 100 kΩ internal resistor.

Therefore, it will be low-level when each pins are open.

2. Over shoot level and under shoot level of input signal must be the standardized.

(High: VCC, Low: –0.2 V)

3. Reducing pop noise is so much better for 10 kΩ to 22 kΩ resisitor and 1 µF to 22 µF capacitor shown figure 2.

Input Pin 10 to 22kΩ

+ 1 to 22µF

MPU

Figure 2 Interface for Reduction of Pop Noise

Rev.2.00 Jun 15, 2005 page 9 of 48

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