8

U4256BM-R

4562C–AUDR–08/04

DAC3 (Pin 5)

following:

Figure 8. Internal Components at DAC3

EN, DATA, CLK

(Pin 16-18)

All functions can be controlled via a 3-wire bus consisting of ENABLE, DATA and

CLOCK. The bus is designed for microcontrollers which operate with 3 V supply voltage.

Details of the data transfer protocol are shown in the table ‘3-wire Bus Description’.

Figure 9. Internal Components at EN, DATA, CLK

DAC3 Offset Approximately

B68

B67

B66

0.55 V

0

0

0

1.25 V

0

0

1

1.90 V

0

1

0

2.60 V

0

1

1

3.30 V

1

0

0

4.10 V

1

0

1

4.80 V

1

1

0

5.45 V

1

1

1

VS

DAC3

V

5

EN

DATA

CLK