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| GC4116 Datasheet, PDF (46/57 Pages) List of Unclassifed Manufacturers – MULTI-STANDARD QUAD DUC CHIP | |||
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GC4116 MULTI-STANDARD QUAD DUC CHIP
DATA SHEET REV 1.0
5.10 PFIR COEFFICIENT PAGES (PAGES 16 to 31)
The user programmable filter PFIR coefficients are stored using pages16 to 19 for channel A, pages 20 to 23 for channel B,
pages 24 to 27 for channel C, and pages 28 to 31 for channel D.
Table 10: PFIR Coefï¬cient Pages
Address
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
Pages 16, 20, 24 or 28
Description
h0 LSBs (end tap)
h0 MSBs (end tap)
h1 LSBs
h1 MSBs
h2 LSBs
h2 MSBs
h3 LSBs
h3 MSBs
h4 LSBs
h4 MSBs
h5 LSBs
h5 MSBs
h6 LSBs
h6 MSBs
h7 LSBs
h7 MSBs
Pages 17, 21, 25 or 29
Description
h8 LSBs
h8 MSBs
h9 LSBs
h9 MSBs
h10 LSBs
h10 MSBs
h11 LSBs
h11 MSBs
h12 LSBs
h12 MSBs
h13 LSBs
h13 MSBs
h14 LSBs
h14 MSBs
h15 LSBs
h15 MSBs
Pages 18, 22, 26 or 30
Description
h16 LSBs
h16 MSBs
h17 LSBs
h17 MSBs
h18 LSBs
h18 MSBs
h19 LSBs
h19 MSBs
h20 LSBs
h20 MSBs
h21 LSBs
h21 MSBs
h22 LSBs
h22 MSBs
h23 LSBs
h23 MSBs
Pages 19, 23, 27 or 31
Description
h24 LSBs
h24 MSBs
h25 LSBs
h25 MSBs
h26 LSBs
h26 MSBs
h27 LSBs
h27 MSBs
h28 LSBs
h28 MSBs
h29 LSBs
h29 MSBs
h30 LSBs
h30 MSBs
h31 LSBs (center tap)
h31 MSBs (center tap)
Coefficient h0 is the first coefficient and coefficient h31 is the center coefficient of the filterâs impulse response. The 16 bit 2âs
complement coefficients are stored in two bytes, least significant byte first, for example, the LSBs of coefficient 0 are stored in
address 16 and the MSBs in address 17.
TO LOAD A COEFFICIENT THE USER MUST WRITE THE LSBYTE FIRST FOLLOWED BY THE MSBYTE. Unknown
values will be written into the LSBs if the MSB is written first. The coefficient registers are read/write.
© 1999â2001 GRAYCHIP,INC.
- 41 -
APRIL 27, 2001
This document contains preliminary information which may be changed at any time without notice
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