Epson S1C17M20 Technical Manual page 209

Table 16.4.2.1 Buzzer Frequency Settings (when f
SNDDAT. Frequency
SFRQ[7:0] bits [Hz]
0x3f 512.0
0x3e 520.1
0x3d 528.5
0x3c 537.2
0x3b 546.1
0x3a 555.4
0x39 565.0
0x38 574.9
0x37 585.1
0x36 595.8
0x35 606.8
0x34 618.3
0x33 630.2
0x32 642.5
0x31 655.4
0x30 668.7
Table 16.4.2.2 Buzzer Duty Ratio Setting Examples (when f
SNDDAT.
16,384 Hz
SLEN[5:0] bits
0x3f
0x3e
0x3d
0x3c
0x3b
0x3a
0x39
0x38
0x37
0x36
0x35
0x34
0x33
0x32
0x31
0x30
0x2f
0x2e
0x2d
0x2c
0x2b
0x2a
0x29
0x28
0x27
0x26
0x25
0x24
0x23
0x22
0x21
0x20
0x1f
0x1e
0x1d
0x1c
0x1b
0x1a
0x19
0x18
0x17
0x16
0x15
0x14
0x13
0x12
S1C17M20/M21/M22/M23/M24/M25
TECHNICAL MANUAL (Rev. 1.0)
SNDDAT. Frequency
SFRQ[7:0] bits [Hz]
0x2f 682.7
0x2e 697.2
0x2d 712.3
0x2c 728.2
0x2b 744.7
0x2a 762.0
0x29 780.2
0x28 799.2
0x27 819.2
0x26 840.2
0x25 862.3
0x24 885.6
0x23 910.2
0x22 936.2
0x21 963.8
0x20 993.0
Duty ratio by buzzer frequency
8,192 Hz
– –
– –
– –
– –
– –
– –
– –
– –
– –
– –
– –
– –
– –
– –
– –
– –
– –
– –
– –
– –
– –
– –
– –
– –
– –
– –
– –
– –
– –
– –
– –
– –
– –
– –
– –
– –
– –
– –
– –
– –
– –
– –
– –
– –
– –
– –
Seiko Epson Corporation
16 SOUND GENERATOR (SNDA)
= 32,768 Hz)
CLK_SNDA
SNDDAT. Frequency
SFRQ[7:0] bits [Hz]
0x1f 1,024.0
0x1e 1,057.0
0x1d 1,092.3
0x1c 1,129.9
0x1b 1,170.3
0x1a 1,213.6
0x19 1,260.3
0x18 1,310.7
0x17 1,365.3
0x16 1,424.7
0x15 1,489.5
0x14 1,560.4
0x13 1,638.4
0x12 1,724.6
0x11 1,820.4
0x10 1,927.5
CLK_SNDA
4,096 Hz 2,048 Hz
– –
– –
– –
– –
– –
– –
– –
– –
– –
– –
– –
– –
– –
– –
– –
– –
– –
– –
– –
– –
– –
– –
– –
– –
– –
– –
– –
– –
– –
– –
– –
– –
– –
– –
– –
– –
– –
– –
– –
– –
– –
– –
– –
– –
– –
– –
SNDDAT. Frequency
SFRQ[7:0] bits [Hz]
0x0f 2,048.0
0x0e 2,184.5
0x0d 2,340.6
0x0c 2,520.6
0x0b 2,730.7
0x0a 2,978.9
0x09 3,276.8
0x08 3,640.9
0x07 4,096.0
0x06 4,681.1
0x05 5,461.3
0x04 6,553.6
0x03 8,192.0
0x02 10,922.7
0x01 16,384.0
0x00 Cannot be set
= 32,768 Hz)
1,024 Hz 512 Hz
– –
– 98.4
– 96.9
– 95.3
– 93.8
– 92.2
– 90.6
– 89.1
– 87.5
– 85.9
– 84.4
– 82.8
– 81.3
– 79.7
– 78.1
– 76.6
– 75.0
– 73.4
– 71.9
– 70.3
– 68.8
– 67.2
– 65.6
– 64.1
– 62.5
– 60.9
– 59.4
– 57.8
– 56.3
– 54.7
– 53.1
– 51.6
– 50.0
96.9 48.4
93.8 46.9
90.6 45.3
87.5 43.8
84.4 42.2
81.3 40.6
78.1 39.1
75.0 37.5
71.9 35.9
68.8 34.4
65.6 32.8
62.5 31.3
59.4 29.7
16-5