sys_conf1.vhd

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-- $Id: sys_conf1.vhd 1181 2019-07-08 17:00:50Z mueller $
-- SPDX-License-Identifier: GPL-3.0-or-later
-- Copyright 2017- by Walter F.J. Mueller <W.F.J.Mueller@gsi.de>
--
------------------------------------------------------------------------------
-- Package Name:   sys_conf
-- Description:    Definitions for sys_tst_serloop1_n4d (for synthesis)
--
-- Dependencies:   -
-- Tool versions:  viv 2016.2; ghdl 0.33
-- Revision History: 
-- Date         Rev Version  Comment
-- 2017-01-04   838   1.0    Initial version
------------------------------------------------------------------------------
 
library ieee;
use ieee.std_logic_1164.all;
 
use work.slvtypes.all;
 
package sys_conf is
 
  -- configure clocks --------------------------------------------------------
  constant sys_conf_clksys_vcodivide   : positive :=   1;
  constant sys_conf_clksys_vcomultiply : positive :=  12;   -- vco 1200 MHz
  constant sys_conf_clksys_outdivide   : positive :=  10;   -- sys  120 MHz
  constant sys_conf_clksys_gentype     : string   := "MMCM";
  
  constant sys_conf_clkdiv_usecdiv : integer  :=  100; -- default usec 
  constant sys_conf_clkdiv_msecdiv  : integer := 1000; -- default msec
 
  -- configure hio interfaces -----------------------------------------------
  constant sys_conf_hio_debounce : boolean := true;   -- instantiate debouncers
 
  -- configure serport ------------------------------------------------------  
  constant sys_conf_uart_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_uart_cdinit : integer :=
    (sys_conf_clksys/sys_conf_uart_defbaud)-1;
  
end package sys_conf;