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Diffstat (limited to 'firmware/fx2/include/syncdelay.h')
| -rw-r--r-- | firmware/fx2/include/syncdelay.h | 65 |
1 files changed, 0 insertions, 65 deletions
diff --git a/firmware/fx2/include/syncdelay.h b/firmware/fx2/include/syncdelay.h deleted file mode 100644 index 0af7d099f..000000000 --- a/firmware/fx2/include/syncdelay.h +++ /dev/null @@ -1,65 +0,0 @@ -/* -*- c++ -*- */ -/* - * Copyright 2003 Free Software Foundation, Inc. - * - * This file is part of GNU Radio - * - * GNU Radio is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 3, or (at your option) - * any later version. - * - * GNU Radio is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with GNU Radio; see the file COPYING. If not, write to - * the Free Software Foundation, Inc., 51 Franklin Street, - * Boston, MA 02110-1301, USA. - */ -#ifndef _SYNCDELAY_H_ -#define _SYNCDELAY_H_ - -/* - * Magic delay required between access to certain xdata registers (TRM page 15-106). - * For our configuration, 48 MHz FX2 / 48 MHz IFCLK, we need three cycles. Each - * NOP is a single cycle.... - * - * From TRM page 15-105: - * - * Under certain conditions, some read and write access to the FX2 registers must - * be separated by a "synchronization delay". The delay is necessary only under the - * following conditions: - * - * - between a write to any register in the 0xE600 - 0xE6FF range and a write to one - * of the registers listed below. - * - * - between a write to one of the registers listed below and a read from any register - * in the 0xE600 - 0xE6FF range. - * - * Registers which require a synchronization delay: - * - * FIFORESET FIFOPINPOLAR - * INPKTEND EPxBCH:L - * EPxFIFOPFH:L EPxAUTOINLENH:L - * EPxFIFOCFG EPxGPIFFLGSEL - * PINFLAGSAB PINFLAGSCD - * EPxFIFOIE EPxFIFOIRQ - * GPIFIE GPIFIRQ - * UDMACRCH:L GPIFADRH:L - * GPIFTRIG EPxGPIFTRIG - * OUTPKTEND REVCTL - * GPIFTCB3 GPIFTCB2 - * GPIFTCB1 GPIFTCB0 - */ - -/* - * FIXME ensure that the peep hole optimizer isn't screwing us - */ -#define SYNCDELAY _asm nop; nop; nop; _endasm -#define NOP _asm nop; _endasm - - -#endif /* _SYNCDELAY_H_ */ |