📄 fx2sdly.h
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//-----------------------------------------------------------------------------
// File: fx2sdly.h
// Contents: EZ-USB FX2 Synchronization Delay (SYNCDELAY) Macro
//
// Enter with _IFREQ = IFCLK in kHz
// Enter with _CFREQ = CLKOUT in kHz
//
// Copyright (c) 2001 Cypress Semiconductor, All rights reserved
//-----------------------------------------------------------------------------
#include "intrins.h"
// Registers which require a synchronization delay, see section 15.14
// FIFORESET FIFOPINPOLAR
// INPKTEND OUTPKTEND
// EPxBCH:L REVCTL
// GPIFTCB3 GPIFTCB2
// GPIFTCB1 GPIFTCB0
// EPxFIFOPFH:L EPxAUTOINLENH:L
// EPxFIFOCFG EPxGPIFFLGSEL
// PINFLAGSxx EPxFIFOIRQ
// EPxFIFOIE GPIFIRQ
// GPIFIE GPIFADRH:L
// UDMACRCH:L EPxGPIFTRIG
// GPIFTRIG
// Note: The pre-REVE EPxGPIFTCH/L register are affected, as well...
// ...these have been replaced by GPIFTC[B3:B0] registers
// _IFREQ can be in the range of: 5000 to 48000
#ifndef _IFREQ
#define _IFREQ 48000 // IFCLK frequency in kHz
#endif
// CFREQ can be any one of: 48000, 24000, or 12000
#ifndef _CFREQ
#define _CFREQ 48000 // CLKOUT frequency in kHz
#endif
#if( _IFREQ < 5000 )
#error "_IFREQ too small! Valid Range: 5000 to 48000..."
#endif
#if( _IFREQ > 48000 )
#error "_IFREQ too large! Valid Range: 5000 to 48000..."
#endif
#if( _CFREQ != 48000 )
#if( _CFREQ != 24000 )
#if( _CFREQ != 12000 )
#error "_CFREQ invalid! Valid values: 48000, 24000, 12000..."
#endif
#endif
#endif
// Synchronization Delay formula: see TRM section 15-14
#define _SCYCL ( 3*(_CFREQ) + 5*(_IFREQ) - 1 ) / ( 2*(_IFREQ) )
#if( _SCYCL == 1 )
#define SYNCDELAY _nop_( )
#endif
#if( _SCYCL == 2 )
#define SYNCDELAY _nop_( ); \
_nop_( )
#endif
#if( _SCYCL == 3 )
#define SYNCDELAY _nop_( ); \
_nop_( ); \
_nop_( )
#endif
#if( _SCYCL == 4 )
#define SYNCDELAY _nop_( ); \
_nop_( ); \
_nop_( ); \
_nop_( )
#endif
#if( _SCYCL == 5 )
#define SYNCDELAY _nop_( ); \
_nop_( ); \
_nop_( ); \
_nop_( ); \
_nop_( )
#endif
#if( _SCYCL == 6 )
#define SYNCDELAY _nop_( ); \
_nop_( ); \
_nop_( ); \
_nop_( ); \
_nop_( ); \
_nop_( )
#endif
#if( _SCYCL == 7 )
#define SYNCDELAY _nop_( ); \
_nop_( ); \
_nop_( ); \
_nop_( ); \
_nop_( ); \
_nop_( ); \
_nop_( )
#endif
#if( _SCYCL == 8 )
#define SYNCDELAY _nop_( ); \
_nop_( ); \
_nop_( ); \
_nop_( ); \
_nop_( ); \
_nop_( ); \
_nop_( ); \
_nop_( )
#endif
#if( _SCYCL == 9 )
#define SYNCDELAY _nop_( ); \
_nop_( ); \
_nop_( ); \
_nop_( ); \
_nop_( ); \
_nop_( ); \
_nop_( ); \
_nop_( ); \
_nop_( )
#endif
#if( _SCYCL == 10 )
#define SYNCDELAY _nop_( ); \
_nop_( ); \
_nop_( ); \
_nop_( ); \
_nop_( ); \
_nop_( ); \
_nop_( ); \
_nop_( ); \
_nop_( ); \
_nop_( )
#endif
#if( _SCYCL == 11 )
#define SYNCDELAY _nop_( ); \
_nop_( ); \
_nop_( ); \
_nop_( ); \
_nop_( ); \
_nop_( ); \
_nop_( ); \
_nop_( ); \
_nop_( ); \
_nop_( ); \
_nop_( )
#endif
#if( _SCYCL == 12 )
#define SYNCDELAY _nop_( ); \
_nop_( ); \
_nop_( ); \
_nop_( ); \
_nop_( ); \
_nop_( ); \
_nop_( ); \
_nop_( ); \
_nop_( ); \
_nop_( ); \
_nop_( ); \
_nop_( )
#endif
#if( _SCYCL == 13 )
#define SYNCDELAY _nop_( ); \
_nop_( ); \
_nop_( ); \
_nop_( ); \
_nop_( ); \
_nop_( ); \
_nop_( ); \
_nop_( ); \
_nop_( ); \
_nop_( ); \
_nop_( ); \
_nop_( ); \
_nop_( )
#endif
#if( _SCYCL == 14 )
#define SYNCDELAY _nop_( ); \
_nop_( ); \
_nop_( ); \
_nop_( ); \
_nop_( ); \
_nop_( ); \
_nop_( ); \
_nop_( ); \
_nop_( ); \
_nop_( ); \
_nop_( ); \
_nop_( ); \
_nop_( ); \
_nop_( )
#endif
#if( _SCYCL == 15 )
#define SYNCDELAY _nop_( ); \
_nop_( ); \
_nop_( ); \
_nop_( ); \
_nop_( ); \
_nop_( ); \
_nop_( ); \
_nop_( ); \
_nop_( ); \
_nop_( ); \
_nop_( ); \
_nop_( ); \
_nop_( ); \
_nop_( ); \
_nop_( )
#endif
#if( _SCYCL == 16 )
#define SYNCDELAY _nop_( ); \
_nop_( ); \
_nop_( ); \
_nop_( ); \
_nop_( ); \
_nop_( ); \
_nop_( ); \
_nop_( ); \
_nop_( ); \
_nop_( ); \
_nop_( ); \
_nop_( ); \
_nop_( ); \
_nop_( ); \
_nop_( ); \
_nop_( )
#endif
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