STA304 STMicroelectronics, STA304 Datasheet - Page 18

• Manufacturer Part Number: STA304
• Description: Audio DSPs Digital Audio Proc
• Manufacturer: STMicroelectronics

Specifications of STA304

• Mounting Style: SMD/SMT
• Package / Case: TQFP-44
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

STA304
11.3 Coefficient map
Filter coefficients:
CHx0 = b2
CHx1 = (b0)-1
CHx2 = a2
CHx3 = (a1)/2
CHx4 = (b1)/2
18/31
(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
…
…
…
…