STA304A STMicroelectronics, STA304A Datasheet - Page 17

• Manufacturer Part Number: STA304A
• Description: IC PROCESSOR AUD DGTL DDX 44TQFP
• Manufacturer: STMicroelectronics
• Series: DDX™r
• Type: Audio Processorr

Specifications of STA304A

• Mounting Type: Surface Mount
• Package / Case: 44-TQFP, 44-VQFP
• Case: QFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Applications: -
• Other names: 497-3944

10.3 Coefficient map
Filter coefficients:
CHx0 = b2
CHx1 = (b0)-1
CHx2 = a2
CHx3 = (a1)/2
CHx4 = (b1)/2
(decimal)
Index
19
20
39
40
41
42
43
44
45
59
60
61
62
63
64
65
66
67
68
…
…
…
…
0
1
4
5
index (hex)
2Ah
2Ch
3Ch
3Eh
13h
14h
27h
28h
29h
2bh
2dh
3bh
3dh
3Fh
40h
41h
42h
43h
44h
0h
1h
4h
5h
…
…
…
…
20 LR filter coef.
20 Surrounds
filter coef.
20 SBW filter
coef.
3 scale in factors
6 SBW
redirection
factors
-scale_LFE→SBW
-scale_RS→SBW
-scale_LS→SBW
-scale_R→SBW
-scale_C→SBW
-scale_L→SBW
-scale_in SBW
SBW01 (b0-1)
-scale_in SUR
SBW03 (a1/2)
SBW04 (b1/2)
SBW00 (b2)
SBW02 (a2)
-scale_in LR
LR01 (b0-1)
LR04 (b1/2)
LR34 (b1/2)
coefficient
LR00 (b2)
LR10 (b2)
SBW10
SBW34
SUR00
SUR34
…
…
…
…
default value
7C7EAh
81C6Fh
C0000h
C0000h
C0000h
C0000h
C0000h
00000h
00000h
00000h
00000h
00000h
00000h
00000h
00032h
80032h
00032h
00000h
00000h
80000h
80000h
80000h
80000h
STA304A
…
…
…
…
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