EB632 datasheet(99/112 Pages) FREESCALE

99 / 112 page

Bootloader Program

Functional Differences Between MSC8101 (Mask 2K42A) and MSC8103 (Mask 2K87M), Rev. 2

Freescale Semiconductor

nop

;due to restriction 6.4.4.a.2

move.l r1,(r7+RFCR) ;$04

move.l #$00000000,r1 ;RSTATE

nop

;due to restriction 6.4.4.a.2

move.l r1,(r7+RSTATE);$08

move.l r1,(r7+RPTR) ;$0c

move.l r1,(r7+RBPTR);$10

move.l r1,(r7+RTEMP);$14

move.l r1,(r7+TSTATE);$18

move.l r1,(r7+TPTR) ;$1c

move.l r1,(r7+TBPTR);$20

move.l r1,(r7+TTEMP);$24

move.l #$10000,d1

nop

;due to restriction 6.4.4.a.2

add

d1,d9,d4

;d4 receive

IMMR +1_0000

nop

;due to restriction 6.4.4.a.2

move.l d4,r6

;R6 <-IMMR +1_0000

;Initiate I2C command - Page = 01010,code=01011

move.l #$29610000,r1

nop

move.l r1,(r6+CPCR);Write the cmd to CPCR

;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

;Save registers in the backup area of DP ram

;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

move.l (r6+SCCR),r1

nop

move.l r1,(r7+SCCRB)

move.l (r6+PODRB),r1

nop

move.l r1,(r7+PODRBB)

move.l (r6+PSORB),r1

nop

move.l r1,(r7+PSORBB)

move.l (r6+PPARB),r1

nop

move.l r1,(r7+PPARBB)

move.l (r6+PDIRB),r1

nop

move.l r1,(r7+PDIRBB)

;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

; Initiate SCCR to 01 -> divide by 16

move.l

#1,r1

move.l

r1,(r6+SCCR)

;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

;;Initiate IO Port

;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

; Configure port B SCL=PB18,SDA=PB19

move.l #$00003000,r1

nop

;due to restriction 6.4.4.a.2

EB632 Datasheet(PDF) 99 Page - Freescale Semiconductor, Inc

EB632 Datasheet(HTML) 99 Page - Freescale Semiconductor, Inc

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