TDA7590 datasheet(35/40 Pages) STMICROELECTRONICS

35 / 40 page

TDA7590

Appendix 1

35/40

bset

#12,x:SCR_ADR

; start SCI transmit

mac

x0,y0,a

x:(r3)+,x0

y:(r4)+,y0

; generates variations on mean value of DAC

move

#$AAAAAA,x0

move

x0,x:$CAAAAA

; send data to expansion port

move

x0,x:GPIODAT

; move PORTB pins

bset

#12,x:SCR_ADR

; start SCI transmit

mac

x0,y0,a

x:(r3)+,x0

y:(r4)+,y0

; generates variations on mean value of DAC

move

#$555555,x0

move

x0,x:$C55555

; send data to expansion port

move

x0,x:GPIODAT

; move PORTB pins

jmp LOOP

ENDIF

;------------------------------------------------------------------------

;

Interrupt Service Routines

;------------------------------------------------------------------------

;SAI

;------------------------------------------------------------------------

INT_TDE

; The transmitter data empty flag is cleared as soon

; as the last move is performed

Movep a,y:<<SAI_TX0

; Load LEFT transmit data register for channel 0

nop

movep b,y:<<SAI_TX0

; Load RIGHT transmit data register for channel 0

rti

INT_RDR

; The receiver data ready flag is cleared as soon

; as the last move is performed

movep

y:<<SAI_RX0,a

; Move Channel 0 received LEFT data to x-memory.

move

a,x:(r0)

nop

movep

y:<<SAI_RX0,b

; Move channel 0 received RIGHT data to y-memory.

move

b,y:(r0)+

rti

INT_ROF

bset

#16,y:SAI_RCS

bclr

#16,y:SAI_RCS

rti

INT_TUF

bset

#16,y:SAI_TCS

bclr

#16,y:SAI_RCS

rti

;TIMER

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