//////////////////////////////////////////////////////////////////////////                                                              ////////  spi_define.v                                                ////////                                                              ////////  This file is part of the SPI IP core project                ////////  http://www.opencores.org/projects/spi/                      ////////                                                              ////////  Author(s):                                                  ////////      - Simon Srot (simons@opencores.org)                     ////////                                                              ////////  All additional information is avaliable in the Readme.txt   ////////  file.                                                       ////////                                                              //////////////////////////////////////////////////////////////////////////////                                                              //////// Copyright (C) 2002 Authors                                   ////////                                                              //////// This source file may be used and distributed without         //////// restriction provided that this copyright statement is not    //////// removed from the file and that any derivative work contains  //////// the original copyright notice and the associated disclaimer. ////////                                                              //////// This source file is free software; you can redistribute it   //////// and/or modify it under the terms of the GNU Lesser General   //////// Public License as published by the Free Software Foundation; //////// either version 2.1 of the License, or (at your option) any   //////// later version.                                               ////////                                                              //////// This source 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 Lesser General Public License for more //////// details.                                                     ////////                                                              //////// You should have received a copy of the GNU Lesser General    //////// Public License along with this source; if not, download it   //////// from http://www.opencores.org/lgpl.shtml                     ////////                                                              ////////////////////////////////////////////////////////////////////////////// Number of bits used for devider register. If used in system with// low frequency of system clock this can be reduced.// Use SPI_DIVIDER_LEN for fine tuning theexact number.////`define SPI_DIVIDER_LEN_8`define SPI_DIVIDER_LEN_16//`define SPI_DIVIDER_LEN_24//`define SPI_DIVIDER_LEN_32`ifdef SPI_DIVIDER_LEN_8  `define SPI_DIVIDER_LEN       8    // Can be set from 1 to 8`endif                                                          `ifdef SPI_DIVIDER_LEN_16                                         `define SPI_DIVIDER_LEN       16   // Can be set from 9 to 16`endif                                                          `ifdef SPI_DIVIDER_LEN_24                                         `define SPI_DIVIDER_LEN       24   // Can be set from 17 to 24`endif                                                          `ifdef SPI_DIVIDER_LEN_32                                         `define SPI_DIVIDER_LEN       32   // Can be set from 25 to 32 `endif//// Maximum nuber of bits that can be send/received at once. // Use SPI_MAX_CHAR for fine tuning the exact number, when using// SPI_MAX_CHAR_32, SPI_MAX_CHAR_24, SPI_MAX_CHAR_16, SPI_MAX_CHAR_8.//`define SPI_MAX_CHAR_128//`define SPI_MAX_CHAR_64//`define SPI_MAX_CHAR_32//`define SPI_MAX_CHAR_24//`define SPI_MAX_CHAR_16//`define SPI_MAX_CHAR_8`ifdef SPI_MAX_CHAR_128  `define SPI_MAX_CHAR          128  // Can only be set to 128   `define SPI_CHAR_LEN_BITS     7`endif`ifdef SPI_MAX_CHAR_64  `define SPI_MAX_CHAR          64   // Can only be set to 64   `define SPI_CHAR_LEN_BITS     6`endif`ifdef SPI_MAX_CHAR_32  `define SPI_MAX_CHAR          32   // Can be set from 25 to 32   `define SPI_CHAR_LEN_BITS     5`endif`ifdef SPI_MAX_CHAR_24  `define SPI_MAX_CHAR          24   // Can be set from 17 to 24   `define SPI_CHAR_LEN_BITS     5`endif`ifdef SPI_MAX_CHAR_16  `define SPI_MAX_CHAR          16   // Can be set from 9 to 16   `define SPI_CHAR_LEN_BITS     4`endif`ifdef SPI_MAX_CHAR_8  `define SPI_MAX_CHAR          8    // Can be set from 1 to 8   `define SPI_CHAR_LEN_BITS     3`endif//// Number of device select signals. Use SPI_SS_NB for fine tuning the // exact number.//`define SPI_SS_NB_8//`define SPI_SS_NB_16//`define SPI_SS_NB_24//`define SPI_SS_NB_32`ifdef SPI_SS_NB_8  `define SPI_SS_NB             8    // Can be set from 1 to 8`endif`ifdef SPI_SS_NB_16  `define SPI_SS_NB             16   // Can be set from 9 to 16`endif`ifdef SPI_SS_NB_24  `define SPI_SS_NB             24   // Can be set from 17 to 24`endif`ifdef SPI_SS_NB_32  `define SPI_SS_NB             32   // Can be set from 25 to 32`endif//// Bits of WISHBONE address used for partial decoding of SPI registers.//`define SPI_OFS_BITS	          4:2//// Register offset//`define SPI_RX_0                0`define SPI_RX_1                1`define SPI_RX_2                2`define SPI_RX_3                3`define SPI_TX_0                0`define SPI_TX_1                1`define SPI_TX_2                2`define SPI_TX_3                3`define SPI_CTRL                4`define SPI_DEVIDE              5`define SPI_SS                  6//// Number of bits in ctrl register//`define SPI_CTRL_BIT_NB         14//// Control register bit position//`define SPI_CTRL_ASS            13`define SPI_CTRL_IE             12`define SPI_CTRL_LSB            11`define SPI_CTRL_TX_NEGEDGE     10`define SPI_CTRL_RX_NEGEDGE     9`define SPI_CTRL_GO             8`define SPI_CTRL_RES_1          7`define SPI_CTRL_CHAR_LEN       6:0