STV8247_06 Datasheet, PDF (118/156 Pages) STMicroelectronics – Digital Audio Decoder/Processor for A2 and NICAM Television/Video Recorders

Register List
STV82x7
Bit Name
Bits[7:2]
LS_EQ_BT_SW
LS_EQ_ON
Reset
Function
000000 Reserved.
0
5-Band Equalizer or Bass-Treble selection
0: 5-Band Equalizer is selected for Loudspeakers.
1: Bass-Treble is selected for Loudspeakers.
1
5-Band Equalizer/Bass-Treble for loudspeakers Enable
0: 5-Band Equalizer/Bass-Teble is disabled
1: 5-Band Equalizer/Bass-Teble is enabled (Default)
EQ_BANDX_GAIN
Address: CAh to CEh
Type: R/W
Bit 7
Bit 6
Bit 5
Loudspeakers Equalizer Gain Register for BandX
Bit 4
Bit 3
EQ_BANDX
Bit 2
Bit 1
Bit 0
Bit Name
EQ_BANDX[7:0]
Reset
Function
0000 BandX gain adjustment within a range from -12 dB to +12 dB in steps of 0.25 dB.
0000 _{Band1: 100 Hz, Band2: 330 Hz, Band3: 1 kHz, Band4: 3.3 kHz, Band5: 10 kHz, see Table 31.}
Note:
With positive equalizer settings, internal clipping may occur even with an overall volume of less than
0 dB. This will lead to a clipped output signal. Therefore, it is not recommended to set equalizer
bands to a value that, in conjunction with volume, would result in an overall positive gain.
Table 31: Loudspeakers Equalizer/Bass-Treble Gain Values (and Headphone Bass-Treble Gain Values)
Value
00110000
00101111
00101110
................
00000000 (Default)
................
11010010
11010001
11010000
Gain G (dB)
+12
+11.75
+11.50
.....
0
.....
-11.50
-11.75
-12
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