MB86434 Ver la hoja de datos (PDF) - Fujitsu

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MB86434

5V Single Power Supply Audio Interface Unit (AIU)

Fujitsu 

MB86434

(2) Accessory Output

The accessory output (RAUD pin) can carry either digital or analog output signals, and is controlled by address

0101 data bit D4 (SW 8), and address 0111 data bit D1 (SW 12).

When both SW 8 and SW 12 are in off position, the accessory outputline is in H-Z (high impedance) state. Caution:

never place both SW 8 and SW 12 in on position at the same time. This may cause the MB86434 to function

improperly.

• SW12 in On Position

DSDT

SW 12

RAUD

(inside IC)

Digital signal input

Digital signal output

(digital signal not buffered)

Address

A4 A3 A2 A1

01 11

Data bit

D4 D3 D2 D1 D0

——— 1 —

• SW8 in On Position

Analog input

BBI

SW 8

RAUD

–

Analog output

+

5 kΩ

(inside IC)

SGC

Can be driven with load resistance

of 5 kΩ or greater

Address

A4 A3 A2 A1

01 00

01 01

Data bit

D4 D3 D2 D1 D0

0 * * *—

0 * — ——

21

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