STA308 STMicroelectronics, STA308 Datasheet - Page 25

• Manufacturer Part Number: STA308
• Description: IC AUDIO PROCESSOR DGTL 64-TQFP
• Manufacturer: STMicroelectronics
• Series: DDX™r
• Type: Audio Processorr

Specifications of STA308

• Mounting Type: Surface Mount
• Package / Case: 64-TQFP, 64-VQFP
• Case: QFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Applications: -

Table 11. Limiter Release Threshold as a function of LxRT bits
3.27 Bass and Treble Tone Control(address 1Bh)
The STA308 contains bass and treble tone control adjustments. These are selectable from +12dB to -12dB of
boost or cut. These are 1st order shelving filters with a corner frequency of 150Hz for bass and 3kHz for treble.
Any gain introduced in the tone controls will carry through to the volume and limiting block without saturation.
Table 12. Tone Control Boost/Cut as a function of BTC and TTC bits
NAME
LxRT(3..0)
RST
BIT
0000
0001
0010
0011
0100
0101
0110
0111
1000
1001
1010
1011
1100
1101
1110
1111
TTC3
D7
0
BTC(3..0)/TTC(3..0)
AC(dB relative to FS)
TTC2
D6
0000
0001
0111
0110
0111
1000
1001
1101
1110
1111
1
…
…
-16.9dB
-13.4dB
-10.9dB
-0.65dB
+0.6dB
-9.0dB
-7.4dB
-6.0dB
-4.9dB
-3.8dB
-2.9dB
-2.1dB
-1.3dB
-23dB
0dB
•
TTC1
D5
1
TTC0
D4
1
DRC(db relative to Volume + LxAT)
BTC3
D3
0
BTC2
-9.4dBdB
-10.65dB
-26.9dB
-23.4dB
-20.9dB
-19.0dB
-17.4dB
-16.0dB
-14.9dB
-13.8dB
-12.9dB
-12.1dB
-11.3dB
D2
-33dB
-10dB
1
•
Boost/Cut
+12dB
+12dB
+12dB
-12dB
-12dB
+2dB
+4dB
-4dB
-2dB
0dB
…
…
BTC1
D1
1
STA308
BTC0
D0
1
25/33