LSI

LS3201

4

4. Buzzer Control/Tone Generator Control

The system can output 4khz/2khz alarm signal by mask option. The alarm signal is enabled to the

output BD[0:1] when the Beep Control Register: Bit[0] is high.

Tone Control Registers (70H – 72H) is used to control the Tone Generator to generate music tone

signal at the buzzer output pad B0, B1.

5. LCD driver

The system has 28 LCD segment pad with 2/3/4 common pads (mask option) providing 28x2, 28x3

LCD segment output.

The LCD segment table is shown below :

COM 1

COM2

COM3

SEG[1:4]

1CH:D[0:3]

18H:D[0:3]

14H:D[0:3]

SEG[5:8]

1DH:D[0:3]

19H:D[0:3]

15H:D[0:3]

SEG[9:12]

1EH:D[0:3]

1AH:D[0:3]

16H:D[0:3]

SEG[13:16]

1FH:D[0:3]

1BH:D[0:3]

17H:D[0:3]

SEG[17:20]

5CH:D[0:3]

58H:D[0:3]

54H:D[0:3]

SEG[21:24]

5DH:D[0:3]

59H:D[0:3]

55H:D[0:3]

SEG[25:28]

5EH:D[0:3]

5AH:D[0:3]

56H:D[0:3]