GMS81C5108
Buzzer Output Frequency
When main-frequency is 4MHz, buzzer frequency is
shown as below and if sub-frequency is selected as clock
source, buzzer frequency is used after dividing by 128.
Frequency Output (kHz)
BDR
Frequency Output (kHz)
BDR
[5:0]
[5:0]
00
01
10
11
00
01
10
11
00
01
02
03
04
05
06
07
250.000
125.000
83.333
62.500
50.000
41.667
35.714
31.250
125.000
62.500
41.667
31.250
25.000
20.833
17.857
15.625
62.500
31.250
20.833
15.625
12.500
10.417
8.929
31.250
15.625
10.417
7.813
6.250
5.208
4.464
3.906
20
21
22
23
24
25
26
27
7.576
7.353
7.143
6.944
6.757
6.579
6.410
6.250
3.788
3.676
3.571
3.472
3.378
3.289
3.205
3.125
1.894
1.838
1.786
1.736
1.689
1.645
1.603
1.563
0.947
0.919
0.893
0.868
0.845
0.822
0.801
0.781
7.813
08
09
0A
0B
0C
0D
0E
0F
27.778
25.000
22.727
20.833
19.231
17.857
16.667
15.625
13.889
12.500
11.364
10.417
9.615
8.929
8.333
7.813
6.944
6.250
5.682
5.208
4.808
4.464
4.167
3.906
3.472
3.125
2.841
2.604
2.404
2.232
2.083
1.953
28
29
2A
2B
2C
2D
2E
2F
6.098
5.952
5.814
5.682
5.556
5.435
5.319
5.208
3.049
2.976
2.907
2.841
2.778
2.717
2.660
2.604
1.524
1.488
1.453
1.420
1.389
1.359
1.330
1.302
0.762
0.744
0.727
0.710
0.694
0.679
0.665
0.651
10
11
12
13
14
15
16
17
14.706
13.889
13.158
12.500
11.905
11.364
10.870
10.417
7.353
6.944
6.579
6.250
5.952
5.682
5.435
5.208
3.676
3.472
3.289
3.125
2.976
2.841
2.717
2.604
1.838
1.736
1.645
1.563
1.488
1.420
1.359
1.302
30
31
32
33
34
35
36
37
5.102
5.000
4.902
4.808
4.717
4.630
4.545
4.464
2.551
2.500
2.451
2.404
2.358
2.315
2.273
2.232
1.276
1.250
1.225
1.202
1.179
1.157
1.136
1.116
0.638
0.625
0.613
0.601
0.590
0.579
0.568
0.558
18
19
1A
1B
1C
1D
1E
1F
10.000
9.615
9.259
8.929
8.621
8.333
8.065
7.813
5.000
4.808
4.630
4.464
4.310
4.167
4.032
3.906
2.500
2.404
2.315
2.232
2.155
2.083
2.016
1.953
1.250
1.202
1.157
1.116
1.078
1.042
1.008
0.977
38
39
3A
3B
3C
3D
3E
3F
4.386
4.310
4.237
4.167
4.098
4.032
3.968
3.906
2.193
2.155
2.119
2.083
2.049
2.016
1.984
1.953
1.096
1.078
1.059
1.042
1.025
1.008
0.992
0.977
0.548
0.539
0.530
0.521
0.512
0.504
0.496
0.488
Table 15-1 Buzzer Output Frequency
JUNE 2001 Ver 1.0
61
HYNIX [ HYNIX SEMICONDUCTOR ]
