Texas Instruments TLV1562 manual Software Overview, if SENDOUTSERIAL, SLAA040

Software Overview

_MAIN:

START:

INITIALIZATION:

* disable IRQ, sign extension mode, ini Stack

	INTM	= 1	; disable IRQ
	SXM	= 0	; no sign extension mode
;	SP	= #0280h	; initialize Stack pointer
* initialize waitstates:
	DP	= #00000h	; point to page zero
	@SWWSR = #01000h		; one I/O wait states

*copy interrupt routine, which are not critical for the EVM to the IRQ table location:

*this is required for the DSKplus kit but has to be changed on other platforms

DP	= #1	; point to page 1 (IRQ vector table)
AR7	= #00200h
repeat(#3h)
data(0084h) = *AR7+		; copy the NMI vector
AR7	= #00240h
repeat(#35)
data(00C0h) = *AR7+
		; copy INT0, INT1,...

* clear all memory locations of the sampling table (table, where the samples will be stored)

DP	= #AD_DP	;
@TEMP	= #00000h	;
repeat(#num_data_A–1)
data(data_loc_A) = @TEMP		; fill memory table 1
repeat(#num_data_B–1)
data(data_loc_B) = @TEMP		; fill memory table 2
repeat(#num_data_C–1)
data(data_loc_C) = @TEMP		; fill memory table 3
repeat(#num_data_D–1)
data(data_loc_D) = @TEMP		; fill memory table 4

.if SEND_OUT_SERIAL

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

*SERIAL_DAC_INI:

*initialize the serial interface to send out the samples for the serial DAC

*set up the serial interface for a DSP–DAC (5618A) conversation

*initialize the SPI interface and the DAC

*the serial interface will be updated with the last sample if the serial

*buffer is empty (after the last bit has been sent)

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

60SLAA040