MOTOROLA
Chapter 36. Digital Signal Processing
36-13
Part V. The Communications Processor Module
Figure 36-14. FIR3 Function
36.11.3.1 FIR3 CoefÞcient, Input, and Output Buffers
The coefÞcient vector occupies K pairs of 16-bit entries (real and imaginary components)
in memory and C(0) is stored in the Þrst location. The input sample buffer is a circular
buffer containing (M+1) bytes and each input sample is two 16-bit entries (real and
imaginary components). The next sample is stored in the address that follows the previous
sample. The output buffer is a circular buffer that contains (N+1) bytes and each output is
two 16-bit entries (real and imaginary components). The next output is stored in the address
that follows the previous output. See Table 36-11.
Table 36-11. FIR3 Coefficient, Input, and Output Buffers
CoefÞcients
Input Samples
Complex Output, FD[X]=1
Real Output, FD[X]=0
imaginary{C(0)}
*
*
*
real{C(0)}
*
*
*
imaginary{C(1)}
imaginary {x(n-k+1)}
imaginary{Y(n-k+1)}
Y(n-k+1)
real{C(1)}
real {x(n-k+1)}
real{Y(n-k+1)}
*
*
*
*
*
*
*
*
Y(n-2)
imaginary{C(k-1)}
imaginary {x(n-2)}
imaginary{Y(n-2)}
Y(n-1)
real{C(k-1)}
real{x(n-2)}
real{Y(n-2)}
Y(n)
imaginary{x(n-1)}
imaginary{Y(n-1)}
real{x(n-1)}
real{Y(n-1)}
imaginary{x(n)}
imaginary{Y(n)}
real{x(n)}
real{Y(n)}
å
T
T
T
X(n)
{Complex}
Y(n)
{Real or Complex}
C(0)
{Complex}
C(1)
C(2)
C(kÐ1)
OR
Y n
( )
C p
( )
X n
p
Ð
(
)
p
0
=
k
1
Ð
å
=
Y n
( )
Real
C p
( )
X n
p
Ð
(
)
p
0
=
k
1
Ð
å
î
þ
ï
ï
í
ý
ï
ï
ì
ü
=
Summary of Contents for MPC860 PowerQUICC
Page 3: ...MPC860UM AD 07 98 REV 1 MPC860 PowerQUICC ª UserÕs Manual ...
Page 36: ...xxxvi MPC860 PowerQUICC UserÕs Manual MOTOROLA CONTENTS Paragraph Number Title Page Number ...
Page 78: ...I iv MPC860 PowerQUICC UserÕs Manual MOTOROLA Part I Overview ...
Page 88: ...1 10 MPC860 PowerQUICC UserÕs Manual MOTOROLA Part I Overview ...
Page 114: ...3 16 MPC860 PowerQUICC UserÕs Manual MOTOROLA Part I Overview ...
Page 226: ...8 32 MPC860 PowerQUICC UserÕs Manual MOTOROLA Part II PowerPC Microprocessor Module ...
Page 262: ...9 36 MPC860 PowerQUICC UserÕs Manual MOTOROLA Part II PowerPC Microprocessor Module ...
Page 274: ...III iv MPC860 PowerQUICC UserÕs Manual MOTOROLA Part III Configuration ...
Page 320: ...12 12 MPC860 PowerQUICC UserÕs Manual MOTOROLA Part III Configuration ...
Page 325: ...MOTOROLA Part IV Hardware Interface IV v Part IV Hardware Interface ...
Page 326: ...IV vi MPC860 PowerQUICC UserÕs Manual MOTOROLA Part IV Hardware Interface ...
Page 352: ...13 26 MPC860 PowerQUICC UserÕs Manual MOTOROLA Part IV Hardware Interface ...
Page 394: ...14 42 MPC860 PowerQUICC UserÕs Manual MOTOROLA Part IV Hardware Interface ...
Page 426: ...15 32 MPC860 PowerQUICC UserÕs Manual MOTOROLA Part IV Hardware Interface ...
Page 530: ...17 26 MPC860 PowerQUICC UserÕs Manual MOTOROLA Part IV Hardware Interface ...
Page 632: ...21 44 MPC860 PowerQUICC UserÕs Manual MOTOROLA Part V The Communications Processor Module ...
Page 660: ...22 28 MPC860 PowerQUICC UserÕs Manual MOTOROLA Part V The Communications Processor Module ...
Page 708: ...24 24 MPC860 PowerQUICC UserÕs Manual MOTOROLA Part V The Communications Processor Module ...
Page 748: ...27 20 MPC860 PowerQUICC UserÕs Manual MOTOROLA Part V The Communications Processor Module ...
Page 846: ...31 20 MPC860 PowerQUICC UserÕs Manual MOTOROLA Part V The Communications Processor Module ...
Page 914: ...35 12 MPC860 PowerQUICC UserÕs Manual MOTOROLA Part V The Communications Processor Module ...
Page 948: ...36 34 MPC860 PowerQUICC UserÕs Manual MOTOROLA Part V The Communications Processor Module ...
Page 998: ...37 48 MPC860 PowerQUICC UserÕs Manual MOTOROLA Part VI Debug and Test ...
Page 1016: ...A 10 MPC860 PowerQUICC UserÕs Manual MOTOROLA Appendixes ...
Page 1024: ...B 8 MPC860 PowerQUICC UserÕs Manual MOTOROLA Appendixes ...
Page 1030: ...C 6 MPC860 PowerQUICC UserÕs Manual MOTOROLA Appendixes ...
Page 1086: ...Glossary 12 MPC860 PowerQUICC UserÕs Manual MOTOROLA ...
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