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Special Filter Instructions
4-66
mov
STAT,*filterSTAT_tag
;load STAT with last filter
tag status
rpt
N–2
firk
A0,*R0++
;Do one sample ––> 32 bit result
mov
*filterSTAT_tag,STAT
;save STAT with last filter
tag status
;R0 now points to the last
sample
movs
*ySampleOut,A0
;FIR outputs bits 0–15 in
AC0, 16–32 in AC1
mov
A0,*nextSample
;Replace last sample with
newest sample and update
mov
*R0,A0
; the start of the
mov
*startOfBuff,R0
; circular buffer to here
(R0)
The set up for the FIRK/CORK instruction is the same as the set up for the FIR/
COR instruction with the exception that the filter coefficients do not need to be
loaded into RAM locations. Rather, they can be included just before speech
data or elsewhere in the program code as follows,
FIRK_COEFFS
include “\..\tables\coeffs.dat”
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 ...