Texas Instruments TMS320C64x DSP manual Dmode

Example 2: Noncontinuous Frame Display for 525/60 Format

/******************************************************************/

/* Description : 8–bit BT.656 non–continuous frame display		*/
/*		*/
/* Some important field descriptions:		*/
/*		*/
/* DMODE	= 000, 8–bit BT.656 mode	*/
/* CON	= 0	*/
/* FRAME	= 1, display frame	*/
/* DF2	= 0	*/
/* DF1	= 0, (8–bit non–continuous frame display)	*/
/* SCALE	= 0, no scaling	*/
/* RESMPL	= 0, no resampling	*/
/* DPK	= X, not used in 8–bit display	*/
/* RSYNC	= X, used in Raw mode(Enable second synchronized raw	*/
/*	data channel)	*/
/* RGBX	= X, used in Raw mode(RGB extract enable. Perform	*/
/*	3/4 FIFO unpacking)	*/
/* VCTL1S	= 00, output HSYNC	*/
/* VCTL2S	= 00, output VSYNC	*/
/* VCTL3S	= 0, output CBLNK	*/
/* HXS	= 0, VCTL1 is an output	*/
/* VXS	= 0, VCTL2 is an output	*/
/* FXS	= 0, VCTL3 is an output	*/
/* PVPSYN	= 0, no previous port synchronization	*/

/******************************************************************/ #include ”csl_vp.h”

#include ”csl_edma.h” #include ”csl_irq.h”

/*–––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––– */

/* global variable declarations*/ /* ––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––– */ VP_Handle vpDisplayHandle; /* handle of vp that to be configured */

Uint8 dispYSpace[]; /* Display Y–data buffer */

Uint8 dispCbSpace[]; /* Display Cb–data buffer */

Uint8 dispCrSpace[]; /* Display Cb–data buffer */

EDMA_Handle hEdmaVPDispY;

EDMA_Handle hEdmaVPDispCb;

EDMA_Handle hEdmaVPDispCr;

Int32 edmaDispYTccNum = 0; /* EDMA tcc for Y channel */

Int32 edmaDispCbTccNum = 0; /* EDMA tcc for Cb channel */

Int32 edmaDispCrTccNum = 0; /* EDMA tcc for Cb channel */

volatile Uint32 displayFrameCount = 0;	/* no of frames that are	*/
	/* displayed	*/
volatile Uint32 dispUnderrun = 0;	/* underrun error flag	*/

SPRU629 Video Port Configuration Examples A-13