LSI

LS3102

3

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 B0, B1 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 16 LCD segment pad with 2/3/4 common pads (mask option) providing 28x2, 28x3

or 16x4 + 12 x3 LCD segment output.

The LCD segment table is shown below :

COM 1

COM2

COM3

COM4

SEG[1:4]

1CH:D[0:3]

18H:D[0:3]

14H:D[0:3]

10H:D[0:3]

SEG[5:8]

1DH:D[0:3]

19H:D[0:3]

15H:D[0:3]

11H:D[0:3]

SEG[9:12]

1EH:D[0:3]

1AH:D[0:3]

16H:D[0:3]

12H:D[0:3]

SEG[13:16]

1FH:D[0:3]

1BH:D[0:3]

17H:D[0:3]

13H:D[0:3]

SEG[17:20]

5CH:D[0:3]

58H:D[0:3]

54H:D[0:3]

Not implemented

SEG[21:24]

5DH:D[0:3]

59H:D[0:3]

55H:D[0:3]

Not implemented

SEG[25:28]

5EH:D[0:3]

5AH:D[0:3]

56H:D[0:3]

Not implemented

6. EL Driver

R0, R1 can be configured as general output or E.L. output. When it is configured as E.L. output,

the EL output frequency can also be mask selected as follow :

PUMP FREQUENCY, R0

A.C. FREQUENCY, R1

E.L. DUTY CYCLE

32KHZ

F512HZ

1/4

16KHZ

F256HZ

2/4

8KHZ

TONE GENERATOR CONTROL

3/4

7. Mask option

Name

description

BZ2K/4K

buzzer frequency

BZ[0], BZ[1]

buzzer control

FSYSPRB

Power Up Control