STV82X6 STMICROELECTRONICS [STMicroelectronics], STV82X6 Datasheet - Page 19
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STV82X6
Manufacturer Part Number
STV82X6
Description
Multistandard TV Audio Processor and Digital Sound Demodulator
Manufacturer
STMICROELECTRONICS [STMicroelectronics]
Datasheet
1.STV82X6.pdf
(95 pages)
- Current page: 19 of 95
- Download datasheet (2Mb)
STV82x6
3.6.2
3.6.3
Independent Mode
This is enabled by setting the BAL_MODE bits in both the
registers to Independent mode. In this case, the register values are used to control the volume/
balance functions as described in
Mute Control
An Independent Mute Control can be used to smooth audio envelope variations in order to prevent
any audible plops can be applied to all audio outputs. This feature is controlled by register
ANA_LS_HP.
A Headphone Detection Mode that will automatically mute the Loudspeaker and Subwoofer outputs
when a headphone is detected can be enabled by the HDP_ON bit in the
this case, only the Headphone output will remain active. See also
and
When a demodulated source is selected on the audio output, the mute is also controlled by
Automatic Standard Recognition system (AUTOSTD). In case of no mono detected or bad detection
of language without backup, the corresponding audio output is automatically muted. In case of
multi-language, the output will be de-muted by selecting an other language with backup.
LS_VOL_CTRL (Loudspeaker Volume Control)
BAL_MODE = 0
(Independent Mode)
BAL_MODE = 1
(Differential Mode)
HP_VOL_CTRL (Headphone Volume Control)
BAL_MODE = 0
(Independent Mode)
BAL_MODE = 1
(Differential Mode)
Section 5.4: Headphone
Mode
Mute
100%
80h
LS_VOL_L
Left Volume value
LS_CVOL
Common Right/Left Volume value
HP_VOL_L
Left Volume value
HP_CVOL
Common Right/Left Volume value
Table 6: Volume/Balance Control Registers
HP_CVOL/HP_VOL_L
Detection.
LS_CVOL/LS_VOL_L
Figure 11: Differential Balance
Register 68h/76h
I²C Control
Table
00h
6.
7Fh
LS_VOL_R
Right Volume value
LS_BAL
Differential Balance value
HP_VOL_R
Right Volume value
HP_BAL
Differential Balance value
LS_VOL_CTRL
HP_BAL/HP_VOL_R
LS_BAL/LS_VOL_R
Register 69h/77h
Section 3.8: Subwoofer Control
Audio Processor Block
ANA_LS_HP
and
HP_VOL_CTRL
register. In
19/95
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