TDA9875AH Philips Semiconductors, TDA9875AH Datasheet - Page 75

• Manufacturer Part Number: TDA9875AH
• Description: Digital TV Sound Processor DTVSP
• Manufacturer: Philips Semiconductors

Philips Semiconductors
10.3.38 B
This register is used to select from sample beeper oscillator frequencies. The beeper output signal is added to the Main
and Auxiliary channel output DAC.
Due to the frequency response of the audio DACs upsampling filters, the 25 kHz beep is approximately 5 dB louder than
the 390 Hz beep.
Table 81 Subaddress 43 (note 1)
Note
1. The default setting at power-up is 0000 0000.
10.3.39 B
This register is used to set the beeper volume. The gain setting is relative to digital full-scale at the input to the Main and
Auxiliary channel output DACs. The beeper volume is independent of any other volume setting.
The beeper signal is added to the Main and Auxiliary channel output signals in the 2
should be set with great care, when the audio signals in the Main and Auxiliary channels are close to digital full-scale, to
avoid output signal distortion due to overload.
1999 Dec 20
MSB
Digital TV Sound Processor (DTVSP)
B7
0
0
0
0
0
0
0
0
EEPER FREQUENCY CONTROL REGISTER
EEPER VOLUME CONTROL REGISTER
B6
0
0
0
0
0
0
0
0
B5
0
0
0
0
0
0
0
0
B4
0
0
0
0
0
0
0
0
B3
0
0
0
0
0
0
0
0
B2
1
1
1
1
0
0
0
0
75
B1
1
1
0
0
1
1
0
0
LSB
B0
1
0
1
0
1
0
1
0
GENERATED FREQUENCY (Hz)
f
s
domain. The beeper volume
25000
7040
3580
1770
1270
900
640
390
Product specification
TDA9875A