fsramdelay.eve

DSP中YSS920B开发板工具程序

//           僒儞僾儖僾儘僌儔儉 FSRAMdelay.eve
//
// 奜晅偗儊儌儕乕偵崅懍 SRAM 傪巊梡偟偰僨傿儗僀傪幚尰偡傞僾儘僌儔儉
// 偱偡丅
// 僐儞僩儘乕儖儗僕僗僞偺 ERAMSEL1-0 傪 11 (崅懍 SRAM 儌乕僪) 偲偟偰
// 偔偩偝偄丅
// SDI0 偺 Lch 偵擖椡偝傟偨怣崋偵懳偟偰丄48000 僒儞僾儖僨傿儗僀偝
// 偣偨怣崋傪 SDO0 偺 Rch 偵弌椡偟偰偄傑偡丅
// SDO0 偺 Lch 偵偼 SDI0 Lch 傪偦偺傑傑弌椡偟偰偄傑偡丅
//
// SDO0 偺 L/Rch 埲奜偺僠儍儞僱儖偼偡傋偰 0 弌椡偱偡丅
//
// 僔僌僫儖僼儘乕偼 ERAMdelay.eve 偲摨偠偱偡丅
// ERAMdelay.pdf 傪嶲徠偟偰偔偩偝偄丅
//
// 偙偺僾儘僌儔儉傪傾僙儞僽儔 EveAsm.exe 偱傾僙儞僽儖偡傞偙偲偵傛傝
// FSRAMdelay.datEve 偑嶌惉偝傟傑偡丅
//
// -----------------------------------------------------------------
//
//           Sample program  FSRAMdelay.eve
//
// This is the program realizing the delay by using high speed SRAM as the
// external memory.
// Set ERAMSEL1-0=11 (high speed SRAM mode) in Control Register.
// After delaying SDI0 Lch input signal by 48000 samples, it is output
// from SDO0 Rch.
// SDO0 Lch ouput is SDI0 Lch input with no delay.
//
// The other channels except for SDO0 L/Rch are all zero output.
//
// Signal flow is same as the one for ERAMdelay.eve.
// Refer to ERAMdelay.pdf.
//
// FSRAMdelay.datEve is assemble from this program by executing EveAsm.exe.



// -----------------------------------------------------------------
// -----------------------------------------------------------------
// -----------------------------------------------------------------

#define ERAM_TYPE FAST_SRAM             // 奜晅 崅懍 SRAM 巊梡
#define ERAM_SIZE 128KW                 // 1Mbit (128kW) SRAM 巊梡

//============================================================
//                  EVE Program
//                       FSRAMdelay
//============================================================

// COEF define
	CDat	P0.5		(-1, 0x4000);		//

// Inner DATA define
	DAdr	Dtmp		(0);				// temporary 梡

// delay tap
	TDat	TIN			(-1, 0);			// 奜晅偗 memory 梡 delay tap
	TDat	TOUT		(-1, 48000);		//

//------------------------------------------------------------
//       幚峴僐儅儞僪僽儘僢僋
//  	|   ERAM            |   BUS             |   MAC/JMP   
//------------------------------------------------------------
		;					OUT0 = IN0;			;								// SDI0/L (IN0) 傪 delay 側偟偱 OUT0 傊丅
		;					;					;
//---------------------------
		wr(TIN);			EW = IN0;			;								// SDI0/L (IN0) 傪 TIN 傊彂偒崬傒丅
		;					;					;								// wr 柦椷偐傜 4 step wait丅
		;					;					;
		;					;					;
		rd(TOUT);			;					;								// TOUT 傪撉傒弌偟丄ER0 傊 save丅
		put(ER0);			;					;
		;					;					;								// rd 柦椷偐傜 5 step wait丅
		;					;					;
		;					;					;
		;					;					ACC0 = ER0 * P0.5;				// ER0 傪 MAC 宱桼偱 OUT1 傊丅
		;					;					;
		;					;					;
		;					;					;
		;					OUT1 = ACC0Ls1;		;								// delay 屻偺抣傪 OUT1 傊 save丅
//	----------------------------------------------------------------------
		;					OUT2 = $ZERO;		;								// 懠偺 channel 傪 0 clear丅
		;					OUT3 = $ZERO;		;								// 懠偺 channel 傪 0 clear丅
		;					OUT4 = $ZERO;		;								// 懠偺 channel 傪 0 clear丅
		;					OUT5 = $ZERO;		;								// 懠偺 channel 傪 0 clear丅
		;					OUT6 = $ZERO;		;								// 懠偺 channel 傪 0 clear丅
		;					OUT7 = $ZERO;		;								// 懠偺 channel 傪 0 clear丅
//	----------------------------------------------------------------------
		;					MPEND = $0.5;		;								// program 廔椆丅
		;					;					;
		;					;					;