Cirrus-logic CS42L55 Manual do Utilizador descarregar pdf (Página 54)

54 DS773F1

CS42L55

6.16.2 Beep On Time

Sets the on duration of the beep signal.

Notes:

1. This setting must not change when BEEP is enabled.

2. Beep on time will scale inversely with sample rate, Fs, but is fixed at the nominal Fs within each speed

mode.

6.17 Beep Volume & Off Time (Address 15h)

6.17.1 Beep Off Time

Sets the off duration of the beep signal.

Notes:

1. This setting must not change when BEEP and/or REPEAT is enabled.

2. Beep off time will scale inversely with sample rate, Fs, but is fixed at the nominal Fs within each speed

mode.

ONTIME[3:0] On Time (Fs = 12, 24 or 48 kHz)

0000 ~86 ms

0001 ~430 ms

0010 ~780 ms

0011 ~1.20 s

0100 ~1.50 s

0101 ~1.80 s

0110 ~2.20 s

0111 ~2.50 s

1000 ~2.80 s

1001 ~3.20 s

1010 ~3.50 s

1011 ~3.80 s

1100 ~4.20 s

1101 ~4.50 s

1110 ~4.80 s

1111 ~5.20 s

Application: “Beep Generator” on page 31

76543210

OFFTIME2 OFFTIME1 OFFTIME0 BPVOL4 BPVOL3 BPVOL2 BPVOL1 BPVOL0

OFFTIME[2:0] Off Time (Fs = 12, 24 or 48 kHz)

000 ~1.23 s

001 ~2.58 s

010 ~3.90 s

011 ~5.20 s

100 ~6.60 s

101 ~8.05 s

110 ~9.35 s

111 ~10.80 s

Application: “Beep Generator” on page 31

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