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MB86435PFV

3 V Single Power Supply Audio Interface Unit (AIU)

Fujitsu 

MB86435

• Tone Generator Control Output Level

External pins

Address

1110

data bits

Address

0111

data bits

Tone generator

circuit

operating

mode

PSC2 PSC1 PSC0 TONC D2 D1 D0 D3 (SW2)

Tone

(1)

Tone

(2)

0

0

0

— ——— —

1

0

0

— ——— —

—

1 or 1

0 ——— 0

SGC SGC

—

1 or 1

0 ——— 1

SGC SGC

—

1 or 1

1 1 —— —

—

—

—

1 or 1

1 0 —— —

—

—

—

1 or 1

1 —1 1

0

SGC SGC

—

1 or 1

1 —1 0

0

SGC

—

1 or 1

1 —0 1

0

SGC

—

1 or 1

1 —0 0

0

(Condition: EV3 = 0 dB)

Output pin

mode

Remarks

LED TONEO

L

H-Z

L

H-Z

L

SGC

L

H-Z

L

—

—

—

SGC

— –14 dBv Single tone output

— –14 dBv Single tone output

— –14 dBv Dual tone output

: Operational, : Power down, H-Z : High-impedance, L: L-level fixed, SGC: SGC fixed

Note: When the TONC pin signal is L-level, the tone generator circuit counters will be reset. When a dual tone is

generated at the time of reset, the initial phase settings for tone (1) and tone (2) will be in phase.

• Example: When Tone (1), Tone (2) are at the same frequency:

TONE

H

L

Tone (1)

SGC

Tone (2)

SGC

TONEO

SGC

14

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