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TLV5614MPWREP Datasheet(PDF) 18 Page - Texas Instruments |
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TLV5614MPWREP Datasheet(HTML) 18 Page - Texas Instruments |
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18 / 32 page  TLV5614EP 2.7V TO 5.5V 12BIT 3 µs QUADRUPLE DIGITALTOANALOG CONVERTER WITH POWER DOWN SGLS355 − JUNE 2006 18 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 APPLICATION INFORMATION ;−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−− ; Main Program ;−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−− .ps 1000h .entry start ;−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−− ; disable interrupts ;−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−− setc INTM ; disable maskable interrupts splk #0ffffh, IFR; clear all interrupts splk #0004h, IMR; timer interrupts unmasked ;−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−− ; set up the timer ; timer period set by values in PRD and TDDR ; period = (CLKOUT1 period) x (1+PRD) x (1+TDDR) ; examples for TMS320C203 with 40MHz main clock ; Timer rate TDDR PRD ; 80 kHz 9 24 (18h) ; 50 kHz 9 39 (27h) ;−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−− prd_val.equ 0018h tcr_val.equ 0029h splk #0000h, temp; clear timer out temp, TIM splk #prd_val, temp; set PRD out temp, PRD splk #tcr_val, temp; set TDDR, and TRB=1 for auto−reload out temp, TCR ;−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−− ; Configure IO0/1 as outputs to be : ; IO0 CS − and set high ; IO1 LDAC − and set high ;−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−− in temp, ASPCR; configure as output lacl temp or #0003h sacl temp out temp, ASPCR in temp, IOSR; set them high lacl temp or #0003h sacl temp out temp, IOSR ;−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−− ; set up serial port for ; SSPCR.TXM=1 Transmit mode − generate FSX ; SSPCR.MCM=1 Clock mode − internal clock source ; SSPCR.FSM=1 Burst mode ;−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−− splk #0000Eh, temp out temp, SSPCR; reset transmitter splk #0002Eh, temp out temp,SSPCR ;−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−− ; reset the rolling pointer ;−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−− lacl #000h sacl r_ptr ;−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−− ; enable interrupts ;−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−− clrc INTM ; enable maskable interrupts ;−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−− ; loop forever! ;−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−− |
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