www.ti.com

TLV5633C

TLV5633I

SLAS190C – MARCH 1999 – REVISED SEPTEMBER 2006

CLR

T1

; set LDACB = 0 (update DAC)

SETB T1

; set LDACB = 1

POP

ACC

POP

PSW

RETI

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

; Set up stack

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

RSEG STACK

DS 10h

; 16 Byte Stack!

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

; Main Program

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

RSEG

MAIN

start:

MOV

SP,#STACK-1

; first set Stack Pointer

CLR

A

MOV

rolling_ptr,A ; set rolling pointer to 0

MOV

TMOD,#002H

; set timer 0 to mode 2 - auto-reload

MOV

TH0,#0CEH

; set timer 2 re-load value for 20 kHz interrupts

MOV

P2, #080H

; set A15 of address bus high to 'memory map'

; device up beyond used address space

SETB T1

; set LDACB = 1 (on P3.5)

; TLV5633 setup

MOV

R0, #003H

; R0 selects control register

MOV

A, #011H

; LOAD ACC with control register value:

; REF1=1, REF0=0 -> 2.048V internal reference

; RLDAC=0 -> use LDACB pin to control DAC

; PD=0 -> DAC enabled

; SPD=1 -> FAST mode

; write control word:

MOVX @R0, A

; write DAC control word

SETB ET0

; enable timer 0 interrupts

SETB EA

; enable all interrupts

SETB TR0

; start timer 0

always:

SJMP always

RET

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

; Table of 32 wave samples used as DAC data

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

RSEG

WAVTBL

wavetable:

;...insert 32 samples here...

.END

16

Submit Documentation Feedback