TL7231MD Datasheet, PDF (13/37 Pages) Samsung semiconductor – FULL LAYER-III ISO/IEC 11172-3 AUDIO DECODER

TL7231MD
20h
1byte Bass Boost
Control Bass boost. The upper nibble of the parameter
Control
controls the cutoff frequency of bass boost, and the lower
(MP3 Only)
nibble controls the level of bass boost. The value of
upper nibble should be in the range of 0 to 6. The cutoff
frequency is
25 × upper nibble + 50 (Hz).
If the values of the lower nibble is in the range of 0 to 12,
the low frequency band below the cutoff frequency is
boosted by 0dB ~ 18dB (1.5dB step). The other values
mean no boost. For example, if the parameter value is
42h, then the cutoff frequency will be 25×4+50=150Hz,
and the frequency band below 150Hz will be boosted by
3dB compared to the upper frequency band. In case of
using bass boost, volume is reduced by 1.5 × n dB where
n means the parameter value. The reset value is
FFh(disabled).
21h
1byte Volume Control Control volume. The parameter should have the value of
range from 0 to 255. If the value is n, the volume is
attenuated by n/2 dB compared to maximum volume. The
reset value is 0.
22h
1byte Prescale Control Control the prescaling. The parameter is a signed value
and can be -128 to 127. The prescaling is done by 0.5 ×
n dB according to parameter value n. That is, 0h ~ 7Fh
means 0dB ~ 63.5dB scaling, 80h ~ FFh means –64dB ~
-0.5dB scaling. The reset value is 0dB.
23h
1byte Tone Control –
Control the Bass Gain. The parameter is a signed value
Bass Gain
and can be -128 to 127. The gain can be 0.5 × n dB
(MP3 Only)
according to parameter value n. The reset value is 0.
24h
1byte Tone Control –
Control the Treble Gain. The parameter is a signed value
Treble Gain
and can be -128 to 127. The gain can be 0.5 × n dB
(MP3 Only)
according to parameter value n. The reset value is 0.
25h
1byte Tone Control –
Control the Bass Cutoff Frequency. The parameter can
Bass Cutoff
have the value of 0 to 255. The cutoff frequency can be
(MP3 Only)
20 + 5 × n Hz according to parameter value n. The reset
value is 0.
26h
1byte Tone Control –
Control the Treble Cutoff Frequency. The parameter can
Treble Cutoff
have the value of 0 to 255. The cutoff frequency can be
(MP3 Only)
5000 + 20 × n Hz according to parameter value n. The
reset value is 0.
27h
none Tone Control –
Enable the Tone Control Function. Tone Control Function
Enable
is disabled when reset.
(MP3 Only)
28h
none Tone Control –
Disable the Tone Control Function. Tone Control Function
Disable
is disabled when reset.
(MP3 Only)
30h
none MP3 CRC Bypass During MP3 decoding, even if the input bit stream
(MP3 Only)
contains the CRC field, TL7231MD doesn’t check the
CRC error. After reset, TL7231MD is set to check CRC
error.
SAMSUNG Electronics CO.
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