mpc823rg Freescale Semiconductor, Inc, mpc823rg Datasheet - Page 520

• Manufacturer Part Number: mpc823rg
• Description: Mpc823 Powerquicc Integrated Communications Processor For Portable Systems
• Manufacturer: Freescale Semiconductor, Inc

Communication Processor Module
16.3.4.10.1 Coefficients and Sample Data Buffers. The coefficients vector occupies k
pairs of 16-bit half-words (real and imaginary components) in memory and C(0) is stored in
the first location. The sample input buffer is a cyclic buffer containing M+1 bytes. Each
sample is a pair of 16-bit half-words (real and imaginary components) and the new sample
is stored in the address that follows the previous sample.
16.3.4.10.2 LMS2 Function Descriptor. The LMS2 function descriptor bit table is
described below.
OFFSET + A
OFFSET + C
OFFSET + E
OFFSET + 0
OFFSET + 2
OFFSET + 4
OFFSET + 6
OFFSET + 8
0
S
Figure 16-31. LMS2 Coefficients and Sample Data Buffers
RES
1
W
2
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I
COEFFICIENTS
imag{C(k-1)}
real{C(k-1)}
imag{C(0)}
imag{C(1)}
real{C(0)}
real{C(1)}
2K bytes
MPC823 REFERENCE MANUAL
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RES
5
6
INDEX
RESERVED
RESERVED
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CBASE
XPTR
EPTR
M
K
INPUT SAMPLES
imag{X(n-k+1)}
real{X(n-k+1)}
imag{X(n-2)}
imag{X(n-1)}
8
real{X(n-2)}
real{X(n-1)}
M + 1 bytes
imag{X(n)}
real{X(n)}
RES
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OPCODE
13
MOTOROLA
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