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

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HA12229F

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

Hitachi -> Renesas Electronics 

HA12228F/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, Dec. 2000, page 11 of 51

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