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-- $Id: sys_conf.vhd 788 2016-07-16 22:23:23Z mueller $

--

-- Copyright 2011-2016 by Walter F.J. Mueller <W.F.J.Mueller@gsi.de>

--

-- This program is free software; you may redistribute and/or modify it under

-- the terms of the GNU General Public License as published by the Free

-- Software Foundation, either version 2, or at your option any later version.

--

-- This program 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 complete details.

--

------------------------------------------------------------------------------

-- Package Name:   sys_conf

-- Description:    Definitions for sys_tst_sram_n3 (for synthesis)

--

-- Dependencies:   -

-- Tool versions:  xst 13.1-14.7; ghdl 0.29-0.33

-- Revision History: 

-- Date         Rev Version  Comment

-- 2016-07-10   786   1.2    memctl with page mode, new read1delay

-- 2013-10-06   538   1.1    pll support, use clksys_vcodivide ect

-- 2011-11-27   433   1.0    Initial version 

------------------------------------------------------------------------------

library ieee;

use ieee.std_logic_1164.all;

use work.slvtypes.all;

use work.nxcramlib.all;

package sys_conf is

  constant sys_conf_clksys_vcodivide   : positive :=   1;

  constant sys_conf_clksys_vcomultiply : positive :=   1;   -- dcm  100 MHz

  constant sys_conf_clksys_outdivide   : positive :=   1;   -- sys  100 MHz

  constant sys_conf_clksys_gentype     : string   := "DCM";

  constant sys_conf_ser2rri_defbaud : integer := 115200;   -- default 115k baud

  -- derived constants

  constant sys_conf_clksys : integer :=

    ((100000000/sys_conf_clksys_vcodivide)*sys_conf_clksys_vcomultiply) /

    sys_conf_clksys_outdivide;

  constant sys_conf_clksys_mhz : integer := sys_conf_clksys/1000000;

  constant sys_conf_ser2rri_cdinit : integer :=

    (sys_conf_clksys/sys_conf_ser2rri_defbaud)-1;

  constant sys_conf_memctl_read0delay : positive :=

              cram_read0delay(sys_conf_clksys_mhz);

  constant sys_conf_memctl_read1delay : positive :=

              cram_read1delay(sys_conf_clksys_mhz);

  constant sys_conf_memctl_writedelay : positive :=

              cram_writedelay(sys_conf_clksys_mhz);

end package sys_conf;