DSP56303UM View Datasheet(PDF) - Freescale Semiconductor
Part Name
Description
Manufacturer
DSP56303UM Datasheet PDF : 108 Pages
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Power Consumption Benchmark
A
The following benchmark program evaluates DSP56303 power use in a test situation. It enables the PLL, disables
the external clock, and uses repeated multiply-accumulate (MAC) instructions with a set of synthetic DSP
application data to emulate intensive sustained DSP operation.
;**************************************************************************
;**************************************************************************
;*
*
;*
CHECKS Typical Power Consumption
*
;*
*
;**************************************************************************
page 200,55,0,0,0
nolist
I_VEC EQU $000000; Interrupt vectors for program debug only
START EQU $8000; MAIN (external) program starting address
INT_PROG EQU $100 ; INTERNAL program memory starting address
INT_XDAT EQU $0; INTERNAL X-data memory starting address
INT_YDAT EQU $0; INTERNAL Y-data memory starting address
INCLUDE "ioequ.asm"
INCLUDE "intequ.asm"
list
org P:START
;
movep #$0243FF,x:M_BCR ;; BCR: Area 3 = 2 w.s (SRAM)
; Default: 2w.s (SRAM)
;
movep #$0d0000,x:M_PCTL
; XTAL disable
; PLL enable
; CLKOUT disable
;
; Load the program
;
move #INT_PROG,r0
move #PROG_START,r1
do
#(PROG_END-PROG_START),PLOAD_LOOP
move p:(r1)+,x0
move x0,p:(r0)+
nop
PLOAD_LOOP
;
; Load the X-data
;
move #INT_XDAT,r0
move #XDAT_START,r1
do
#(XDAT_END-XDAT_START),XLOAD_LOOP
DSP56303 Technical Data, Rev. 11
Freescale Semiconductor
A-1
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