STA015 View Datasheet(PDF) - STMicroelectronics
Part Name
Description
View to exact match
STA015 Datasheet PDF : 44 Pages
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STA015-STA015B-STA015T
BASS_FREQUENCY_LOW
Address: 0x79 (121)
Software Reset: 0x00
Hardware Reset: 0x00
MSB
LSB
b7 b6 b5 b4 b3 b2 b1 b0
BF7 BF6 BF5 BF4 BF3 BF2 BF1 BF0
BASS_FREQUENCY_HIGH
Address: 0x7A (122)
Software Reset: 0x00
Hardware Reset: 0x00
MSB
LSB
b7 b6 b5 b4 b3 b2 b1 b0
BF15 BF14 BF13 BF12 BF11 BF10 BF9 BF8
The registers BASS_FREQUENCY_HIGH and
BASS_FREQUENCY_LOW, logically concate-
nated as a 16 bit wide register, are used to select
the frequency, in Hz, where the selected fre-
quency is -12dB respect to the pass-band. By
setting the BASS_FREQUENCY registers, the
following rules must be kept:
Bass_Freq <= Treble_Freq
Bass_Freq > 0
(suggested range: 20 Hz < Bass_Freq < 750 Hz)
Example:
Bass = 200Hz
Treble = 3kHz
TFS
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
0000101110111000
BFS
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
0000000011001000
TREBLE_ENHANCE
Address: 0x7B (123)
Software Reset: 0x00
Hardware Reset: 0x00
MSB
LSB
b7 b6 b5 b4 b3 b2 b1 b0
TE7 TE6 TE5 TE4 TE3 TE2 TE1 TE0
Signed number (2 complement)
This register is used to select the enhancement
or attenuation STA015 has to perform on Treble
Frequency range at the digital signal.
A decrement (increment) of a decimal unit corre-
sponds to a step of attenuation (enhancement) of
1.5dB.
The allowed Attenuation/Enhancement range is
[-18dB, +18dB].
MSB
LSB
b7 b6 b5 b4 b3 b2 b1 b0
0
0
0
0
1
1
0
0
0
0
0
0
1
0
1
1
0
0
0
0
1
0
1
0
0
0
0
0
1
0
0
1
.
.
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
.
.
1
1
1
1
0
1
1
1
1
1
1
1
0
1
1
0
1
1
1
1
0
1
0
0
1
1
1
1
0
1
0
0
ENHANCE/ATTENUATION
1.5dB step
+18
+16.5
+15
+13.5
+1
0
-1
-13.5
-15
-16.5
-18
28/44
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