DSP56309EVM Freescale Semiconductor, DSP56309EVM Datasheet - Page 229

• Manufacturer Part Number: DSP56309EVM
• Description: KIT EVALUATION FOR XC56309
• Manufacturer: Freescale Semiconductor
• Type: DSPr

Specifications of DSP56309EVM

• Contents: Module Board, Installation Guide, Power Supply, Cable, Software and more
• Description/function: Audio DSPs
• Product: Audio Modules
• For Use With/related Products: DSP56309
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

HI08LL
HI08NW
HI08LOOP
;========================================================================
EPRSCILD
;
;========================================================================
; This is the routine that loads from the SCI.
; MD:MC:MB:MA=1010 - external SCI clock
SCILD
_LOOP6
_LOOP8
_LOOP7
;========================================================================
; This is the routine that loads from external EPROM.
Freescale Semiconductor
movep
move
do
jset
jclr
enddo
bra
movep
nop
bra
jclr #1,omr,EPROMLD
jset #0,omr,SCILD
movep #$0302,X:M_SCR
movep #$C000,X:M_SCCR
movep #7,X:M_PCRE
do #6,_LOOP6
jclr #2,X:M_SSR,*
movep X:M_SRXL,A2
jclr #1,X:M_SSR,*
movep A2,X:M_STXL
asr #8,a,a
move a1,r0
move a1,r1
do a0,_LOOP7
do #3,_LOOP8
jclr #2,X:M_SSR,*
movep X:M_SRXL,A2
jclr #1,X:M_SSR,*
movep a2,X:M_STXL
asr #8,a,a
movem a1,p:(r0)+
nop
bra <FINISH
x:M_HRX,r0
r0,r1
a0,HI08LOOP
#HRDF,x:M_HSR,HI08NW
#HF0,x:M_HSR,HI08LL
<HI08LOOP
x:M_HRX,p:(r0)+
<FINISH
; If MD:MC:MB:MA=1001, go load from EPROM
; If MD:MC:MB:MA=1011, reserved, default to SCI
; Configure SCI Control Reg
; Configure SCI Clock Control Reg
; Configure SCLK, TXD and RXD
; get 3 bytes for number of
; program words and 3 bytes
; for the starting address
; Wait for RDRF to go high
; Put 8 bits in A2
; Wait for TDRE to go high
; echo the received byte
; starting address for load
; save starting address
; Receive program words
; Wait for RDRF to go high
; Put 8 bits in A2
; Wait for TDRE to go high
; echo the received byte
; Store 24-bit result in P mem.
; pipeline delay
; Boot from SCI done
DSP56309 User’s Manual, Rev. 1
; to be written
; set a loop with the downloaded length
; If new word was loaded then jump to
; read that word
; If HF0=0 then continue with the
; downloading
; Must terminate the do loop
; Move the new word into its destination
; location in the program RAM
; pipeline delay
Bootstrap Code
A-7