Texas Instruments TLV1562 manual Software Overview, elseif R4BITRESOLUT, SLAA040

Software Overview

.elseif (R4BIT_RESOLUT)
@CR1_SEND ^= #RES_10_BIT	; clear bit for 10–Bit Resolution
@CR1_SEND = #RES_4_BIT	; set 8–Bit conversion mode
.endif
.if (EXTERNAL_CLOCK)
@CR0_SEND ^= #CLK_INTERNAL	; clear CLK_INTERNAL bit if one
@CR0_SEND = #CLK_EXTERNAL	; set CLK_EXTERNAL mode
.endif
.if (AUTO_PWDN_ENABLE)
@CR1_SEND ^= #NO_AUTO_PWDN	; clear NO_AUTO_PWDN bit if one
@CR1_SEND = #AUTO_PWDN	; set AUTO_PWDN mode
.endif

.if (DIFF_INPUT_MODE)

@CR0_SEND ^= #SINGLE_END ; clear single ended input bit if one @CR0_SEND = #DIFFERENTIAL ; set differential input mode

.endif

.if (IME_CALIBRATION)

call CALIBRAT_INTERNAL_MID_SCALE

.endif

.if (SME_CALIBRATION)

call CALIBRAT_SYSTEM_MID_SCALE

.endif

****************************

*ADC_INI:

*set ADC register CR0/CR1

****************************

ADC_INI:

*write CR1 (to reset old CSTART mode initialization, because otherwise, the ADC never sets

*back its int– pin to show a sample is available:

@CR_PROBLEM = #(SW_PWDNNO_AUTO_PWDNNO_2COMPLEMENTNO_DEBUGRES_10_BITRD_CONV_START);

port(ADC) = @CR_PROBLEM	; Address	decoder sets CS low,
	; WR– low	and send CR_PROBLEM value to the ADC
NOP	; wait for tW(CSH)=50ns
* write CR1:
port(ADC) = @CR1_SEND	; Address decoder sets CS low,
	; WR– low and send CR1 value to the ADC
port(DEACTIVE) = @ZERO	; deselect ADC (CS high)
NOP	; wait for tW(CSH)=50ns

62SLAA040