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Special Filter Instructions
4-68
Figure 4–7. Filter Instruction and Circular Buffering for N+1 Tap Filter
16 Bits
TAG
AC n+1
AC n+2
AC n
y
if TAG = 1
Rx
even
coeff_array
DP
coeff_array
Rx
even
+1
CORK/FIRK only
COR/FIR only
h[0]
h[1]
h[2]
0
0
0
h[3]
h[4]
0
0
0
h[N–1]
0
0
0
h[N]
0
0
16 Bits
17
th
Bit
coeff_array
coeff_array is stored in
program or data memory
based on filter instruction.
x[k]
x[k–1]
x[k–2]
0
0
0
x[k–3]
x[k–4]
0
0
0
x[k–N]
0
0
1
x[k+1]
0
16 Bits
17
th
Bit
sample_buf
x
x
x
x
x
x
x
+
STAT
x[k–N–1] is replaced
by x[k+1]
y =
Σ
k =0..N
h[
m]
×
x[k–m]
+
R5 = –2(N+1)
program memory (FIRK/CORK)
data memory (FIR/COR)
48-bit accumulation for COR/CORK
32-bit accumulation
for FIR/FIRK
17th Bit
Rx
even
Summary of Contents for MSP50C614
Page 1: ...MSP50C614 Mixed Signal Processor User s Guide SPSU014 January 2000 Printed on Recycled Paper ...
Page 6: ...vi ...
Page 92: ...3 22 ...
Page 300: ...Instruction Set Summay 4 208 Assembly Language Instructions ...
Page 314: ...Software Emulator 5 14 Figure 5 13 Project Menu Figure 5 14 Project Open Dialog ...
Page 325: ...Software Emulator 5 25 Code Development Tools Figure 5 25 EPROM Programming Dialog ...
Page 331: ...Software Emulator 5 31 Code Development Tools Figure 5 31 Context Sensitive Help System ...
Page 368: ...5 68 ...
Page 394: ...7 12 ...
Page 402: ...A 8 ...
Page 412: ...Packaging B 10 ...