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-- $Id: rlink_sp1c.vhd 476 2013-01-26 22:23:53Z mueller $

--

-- Copyright 2011- 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.

-- 

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

-- Module Name:    rlink_sp1c - syn

-- Description:    rlink_core8 + serport_1clock combo

--

-- Dependencies:   rlink_core8

--                 serport/serport_1clock

--

-- Test bench:     -

--

-- Target Devices: generic

-- Tool versions:  xst 13.1; ghdl 0.29

--

-- Synthesized (xst):

-- Date         Rev  ise         Target      flop lutl lutm slic t peri ifa ofa

-- 2011-12-09   437 13.1    O40d xc3s1000-4   337  733   64  469 s  9.8   -   -

--

-- Revision History: 

-- Date         Rev Version  Comment

-- 2011-12-09   437   1.0    Initial version 

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

library ieee;

use ieee.std_logic_1164.all;

use ieee.numeric_std.all;

use work.slvtypes.all;

use work.rblib.all;

use work.rlinklib.all;

use work.serportlib.all;

entity rlink_sp1c is                    -- rlink_core8+serport_1clock combo

  generic (

    ATOWIDTH : positive :=  5;          -- access timeout counter width

    ITOWIDTH : positive :=  6;          -- idle timeout counter width

    CPREF : slv4 := c_rlink_cpref;      -- comma prefix

    IFAWIDTH : natural :=  5;           -- input fifo address width  (0=none)

    OFAWIDTH : natural :=  5;           -- output fifo address width (0=none)

    ENAPIN_RLMON : integer := sbcntl_sbf_rlmon;  -- SB_CNTL for rlmon (-1=none)

    ENAPIN_RBMON : integer := sbcntl_sbf_rbmon;  -- SB_CNTL for rbmon (-1=none)

    CDWIDTH : positive := 13;           -- clk divider width

    CDINIT : natural   := 15);          -- clk divider initial/reset setting

  port (

    CLK  : in slbit;                    -- clock

    CE_USEC : in slbit;                 -- 1 usec clock enable

    CE_MSEC : in slbit;                 -- 1 msec clock enable

    CE_INT : in slbit := '0';           -- rri ito time unit clock enable

    RESET  : in slbit;                  -- reset

    ENAXON : in slbit;                  -- enable xon/xoff handling

    ENAESC : in slbit;                  -- enable xon/xoff escaping

    RXSD : in slbit;                    -- receive serial data      (board view)

    TXSD : out slbit;                   -- transmit serial data     (board view)

    CTS_N : in slbit := '0';            -- clear to send   (act.low, board view)

    RTS_N : out slbit;                  -- request to send (act.low, board view)

    RB_MREQ : out rb_mreq_type;         -- rbus: request

    RB_SRES : in rb_sres_type;          -- rbus: response

    RB_LAM : in slv16;                  -- rbus: look at me

    RB_STAT : in slv3;                  -- rbus: status flags

    RL_MONI : out rl_moni_type;         -- rlink_core: monitor port

    SER_MONI : out serport_moni_type    -- serport: monitor port

  );

end entity rlink_sp1c;

architecture syn of rlink_sp1c is

  signal RLB_DI : slv8 := (others=>'0');

  signal RLB_ENA : slbit := '0';

  signal RLB_BUSY : slbit := '0';

  signal RLB_DO : slv8 := (others=>'0');

  signal RLB_VAL : slbit := '0';

  signal RLB_HOLD : slbit := '0';

begin

  CORE : rlink_core8

    generic map (

      ATOWIDTH     => ATOWIDTH,

      ITOWIDTH     => ITOWIDTH,

      CPREF        => CPREF,

      ENAPIN_RLMON => ENAPIN_RLMON,

      ENAPIN_RBMON => ENAPIN_RBMON)

    port map (

      CLK        => CLK,

      CE_INT     => CE_INT,

      RESET      => RESET,

      RLB_DI     => RLB_DI,

      RLB_ENA    => RLB_ENA,

      RLB_BUSY   => RLB_BUSY,

      RLB_DO     => RLB_DO,

      RLB_VAL    => RLB_VAL,

      RLB_HOLD   => RLB_HOLD,

      RL_MONI    => RL_MONI,

      RB_MREQ    => RB_MREQ,

      RB_SRES    => RB_SRES,

      RB_LAM     => RB_LAM,

      RB_STAT    => RB_STAT

    );

  SERPORT : serport_1clock

    generic map (

      CDWIDTH   => CDWIDTH,

      CDINIT    => CDINIT,

      RXFAWIDTH => IFAWIDTH,

      TXFAWIDTH => OFAWIDTH)

    port map (

      CLK      => CLK,

      CE_MSEC  => CE_MSEC,

      RESET    => RESET,

      ENAXON   => ENAXON,

      ENAESC   => ENAESC,

      RXDATA   => RLB_DI,

      RXVAL    => RLB_ENA,

      RXHOLD   => RLB_BUSY,

      TXDATA   => RLB_DO,

      TXENA    => RLB_VAL,

      TXBUSY   => RLB_HOLD,

      MONI     => SER_MONI,

      RXSD     => RXSD,

      TXSD     => TXSD,

      RXRTS_N  => RTS_N,

      TXCTS_N  => CTS_N

    );

end syn;