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-- $Id: tbd_rlink_direct.vhd 427 2011-11-19 21:04:11Z mueller $

--

-- Copyright 2007-2010 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:    tbd_rlink_direct - syn

-- Description:    Wrapper for rlink_core to avoid records. It has a port

--                 interface which will not be modified by xst synthesis

--                 (no records, no generic port).

--

-- Dependencies:   rlink_core

--

-- To test:        rlink_core

--

-- Target Devices: generic

--

-- Synthesized (xst):

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

-- 2007-11-24    92  8.1.03 I27  xc3s1000-4   143  309    0  166 s 7.64

-- 2007-10-27    92  9.2.02 J39  xc3s1000-4   148  320    0    - t 8.34

-- 2007-10-27    92  9.1    J30  xc3s1000-4   148  315    0    - t 8.34

-- 2007-10-27    92  8.2.03 I34  xc3s1000-4   153  302    0  162 s 7.65

-- 2007-10-27    92  8.1.03 I27  xc3s1000-4   138  306    0    - s 7.64

--

-- Tool versions:  xst 8.1, 8.2, 9.1, 9.2, 11.4, 12.1; ghdl 0.18-0.29

--

-- Revision History: 

-- Date         Rev Version  Comment

-- 2010-12-25   348   3.0.2  drop RL_FLUSH, add RL_MONI for rlink_core

-- 2010-12-24   347   3.0.1  rename: CP_*->RL->*

-- 2010-12-05   343   3.0    rri->rlink renames; port to rbus V3 protocol;

-- 2010-05-02   287   2.2.1  ren CE_XSEC->CE_INT,RP_STAT->RB_STAT,AP_LAM->RB_LAM

--                           drop RP_IINT signal from interfaces

-- 2010-04-03   274   2.2    add CP_FLUSH for rri_core, add CE_USEC

-- 2009-03-14   197   2.1    remove records in interface to allow _ssim usage

-- 2008-08-24   162   2.0    with new rb_mreq/rb_sres interface

-- 2007-11-25    98   1.1    added RP_IINT support; use entity rather arch

--                           name to switch core/serport

-- 2007-07-02    63   1.0    Initial version 

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

library ieee;

use ieee.std_logic_1164.all;

use work.slvtypes.all;

use work.rblib.all;

use work.rlinklib.all;

entity tbd_rlink_direct is              -- rlink_core only tb design

                                        -- generic: ATOWIDTH=5; ITOWIDTH=6

                                        -- implements tbd_rlink_gen

  port (

    CLK  : in slbit;                    -- clock

    CE_INT : in slbit;                  -- rlink ito time unit clock enable

    CE_USEC : in slbit;                 -- 1 usec clock enable

    RESET  : in slbit;                  -- reset

    RL_DI : in slv9;                    -- rlink: data in

    RL_ENA : in slbit;                  -- rlink: data enable

    RL_BUSY : out slbit;                -- rlink: data busy

    RL_DO : out slv9;                   -- rlink: data out

    RL_VAL : out slbit;                 -- rlink: data valid

    RL_HOLD : in slbit;                 -- rlink: data hold

    RB_MREQ_aval : out slbit;           -- rbus: request - aval

    RB_MREQ_re : out slbit;             -- rbus: request - re

    RB_MREQ_we : out slbit;             -- rbus: request - we

    RB_MREQ_initt : out slbit;          -- rbus: request - init; avoid name coll

    RB_MREQ_addr : out slv8;            -- rbus: request - addr

    RB_MREQ_din : out slv16;            -- rbus: request - din

    RB_SRES_ack : in slbit;             -- rbus: response - ack

    RB_SRES_busy : in slbit;            -- rbus: response - busy

    RB_SRES_err : in slbit;             -- rbus: response - err

    RB_SRES_dout : in slv16;            -- rbus: response - dout

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

    RB_STAT : in slv3;                  -- rbus: status flags

    TXRXACT : out slbit                 -- txrx active flag

  );

end entity tbd_rlink_direct;

architecture syn of tbd_rlink_direct is

  signal RL_MONI : rl_moni_type := rl_moni_init;

  signal RB_MREQ : rb_mreq_type := rb_mreq_init;

  signal RB_SRES : rb_sres_type := rb_sres_init;

begin

  RB_MREQ_aval <= RB_MREQ.aval;

  RB_MREQ_re   <= RB_MREQ.re;

  RB_MREQ_we   <= RB_MREQ.we;

  RB_MREQ_initt<= RB_MREQ.init;

  RB_MREQ_addr <= RB_MREQ.addr;

  RB_MREQ_din  <= RB_MREQ.din;

  RB_SRES.ack  <= RB_SRES_ack;

  RB_SRES.busy <= RB_SRES_busy;

  RB_SRES.err  <= RB_SRES_err;

  RB_SRES.dout <= RB_SRES_dout;

  UUT : rlink_core

    generic map (

      ATOWIDTH => 5,

      ITOWIDTH => 6)

    port map (

      CLK      => CLK,

      CE_INT   => CE_INT,

      RESET    => RESET,

      RL_DI    => RL_DI,

      RL_ENA   => RL_ENA,

      RL_BUSY  => RL_BUSY,

      RL_DO    => RL_DO,

      RL_VAL   => RL_VAL,

      RL_HOLD  => RL_HOLD,

      RL_MONI  => RL_MONI,

      RB_MREQ  => RB_MREQ,

      RB_SRES  => RB_SRES,

      RB_LAM   => RB_LAM,

      RB_STAT  => RB_STAT

    );

  TXRXACT <= '0';

end syn;