GF9101 Просмотр технического описания (PDF) - Gennum -> Semtech
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GF9101 Datasheet PDF : 23 Pages
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TABLE 7: Configuration Word for an Odd-Tap Symmetric Filter
BIT
CONFIGURATION
NO.
WORD
DESCRIPTION
0
1
Data A and B are both
1
1
signed data2
2
0
One register delay
3
0
4
1
23-tap filter, bypass reg.
B_12
5
X
Depending on loading mode.
6
X
(See Table 1)
NOTE:
2: Bits 0 and 1 should have the same value for a 23 or 24 tap
filter.
TABLE 8: Internal RAM Addresses and Contents
COEF_ADDR (6-0)
MEMORY CONTENTS
00H
12 coefficients, for tap 1—> tap 12
C11
C10
C10
C3
C2
C4
C9
C8
C0 C1
C5
C7
C6
C9
C3
C8
C4
C2
(a) Filter Coefficients Cn
C7
C5
C6
C1 C0
A22
A23
A21
A16
A17
A15
A10
A11
A9
A4
A5
A3
(b) Input Data An
A25 A24
A20 A18
A19
A14
A12
A13
A8
A6
A7
Fig. 7 Input Data An and Coefficients Cn
A2
A0
A1
9
520 - 64 - 7
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