DSP56321RMSLASHD datasheet(71/88 Pages) NXP

71 / 88 page

A-1

Appendix A

Power

Consumption

Benchmark

The following benchmark program evaluates DSP56321T 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

#(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

#(XDAT_END-XDAT_START),XLOAD_LOOP

move

p:(r1)+,x0

move

x0,x:(r0)+

XLOAD_LOOP

;

; Load the Y-data

;

move

#INT_YDAT,r0

move

#YDAT_START,r1

#(YDAT_END-YDAT_START),YLOAD_LOOP

move

p:(r1)+,x0

move

x0,y:(r0)+

YLOAD_LOOP

;

jmp

INT_PROG

PROG_START

move

#$0,r0

move

#$0,r4

move

#$3f,m0

move

#$3f,m4

;

clr

Freescale Semiconductor, Inc.

For More Information On This Product,

Go to: www.freescale.com

DSP56321RM/D Datasheet(PDF) 71 Page - NXP Semiconductors

DSP56321RM/D Datasheet(HTML) 71 Page - NXP Semiconductors

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88

Datasheet Download

Link URL