nand01gr3b.vhd

nand flash NAND01GR3B (st)的仿真模型 （VHDL） 的

--   
--           _/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/
--         _/                   _/  ____________________________________________ 
--         _/                  _/  /                                           / 
--         _/_/               _/  /                                NAND01GR3B / 
--          _/_/_/           _/  /                                           /  
--             _/_/         _/  /                                     1Gbit / 
--              _/_/       _/  /        8 bit, 2112 Byte Page, 1.8 V, NAND / 
--                _/      _/  /                                           / 
--                _/     _/  /                     VHDL Behavioral Model / 
--                _/    _/  /                               Version 3.0 / 
--             _/_/    _/  /                                           /
--          _/_/_/    _/  /     Copyright (c) 2006 STMicroelectronics / 
--        _/_/_/     _/  /___________________________________________/ 
--  _/_/_/_/_/      _/    
--  
--



--******************************************************************************--
--******************************************************************************--
--******************************************************************************--
--******************************************************************************--
--                          CORE_SC ENTITY                                      --
--******************************************************************************--
--******************************************************************************--
--******************************************************************************--
--******************************************************************************--

LIBRARY IEEE;
   Use IEEE.std_logic_1164.all;
   Use IEEE.std_logic_TextIO.all;
   Use IEEE.std_logic_arith.all;

LIBRARY Work;
    Use work.UserData.all;
    Use work.CUIcommandData.all;
    Use work.data.all;
    Use work.TimingData.all;
    Use work.StringLib.all;
    Use work.BlockLib.all;
    Use work.CoreComponents.all;
    Use work.ResFunctions.all;







ENTITY NANDxxxxxBx IS       
 
  GENERIC (     devId           : natural;  -- used in multiChip devices 
                isDebug         : boolean;
                MemoryFile_Name : String;            
                timingCheck_on  : Boolean  );

  PORT  (
      I_O       : inout IObus_type;
      E_N       : in std_logic;
      R_N       : in std_logic;
      W_N       : in std_logic;
      AL        : in std_logic;
      CL        : in std_logic;
      WP_N      : in std_logic;
      PRL       : in std_logic;
      RB_N      : out std_logic;
      Vss       : in real;
      Vdd       : in real
  );
  
      
END NANDxxxxxBx ;









ARCHITECTURE behavior OF NANDxxxxxBx IS



-- === Internal Signal Declaration ===

-- Data Bus
Signal  DataBusOut    : IObus_type;
Signal  DataBusBUFFER : IObus_type;

-- Address Bus
Signal  hold_Address      : Address_type;
Signal  hold_block        : BlockAddress_type;

-- Address Bus
Signal  hold_Command  : IObus_type;

-- Chip Enable
Signal  CE_N      : Std_Logic;

-- Data Write Enable
Signal  WLE_N      : Std_Logic;

-- Data Read Enable 
Signal  RLE_N      : Std_Logic;

-- Address Latch Enable
Signal  ALE_N      : Std_Logic;

-- Command Latch Enable
Signal  CLE_N      : Std_Logic;

-- Internal RB_N signal (needed because RB_N is an OUT mode signal, and can't be read by Core's components)
Signal  RB_N_int   : std_logic ;

-- Interface signals delayed (for syncronization with RLE_N)
signal E_N_d1, R_N_d1, W_N_d1 : std_logic;

-- is Voltage in Range
Signal  VddOK      : Std_Logic := '1';

-- Reset
Signal  ResetSoftware : Boolean := false;  
signal  PowerUp        : Boolean := false;
Signal  Reset          : Boolean := false; -- is TRUE if ResetSoftware or PowerUp are true 
Signal  isInit         : boolean := true;



-- ==== Signal Declaration ==== --
-- Kernel Signal
Signal  Kernel_Status           : Status_type;
Signal  Kernel_Report           : KernelReportGuarded KernelReport_type register;
Signal  Kernel_CUIcommand       : Event := False;
Signal  Kernel_CommandDecode    : CommandGuarded Command_type register := None;
Signal  Kernel_IseqCommand      : IndexCommandGuarded IndexCommand_type register := 1;
Signal  Kernel_ReadEvent        : Event := False;
Signal  Kernel_ErrorEvent       : EventGuarded ErrorEvent register := 'X';
Signal  Kernel_VerifyEvent      : EventTimeGuarded TimeEvent register := 0 ns;
Signal  Kernel_LatchAddress     : TimeEvent := 0 ns;
Signal  Kernel_ReadTaskComplete : EventTimeGuarded TimeEvent register := 0 ns;
Signal  kernel_ReadEventComplete : EventTimeGuarded TimeEvent register := 0 ns;
Signal  Kernel_PageComplete     : PageBufferEventGuarded PageBufferEvent register ;
Signal  Kernel_BlockLockComplete: EventTimeGuarded TimeEvent register := 0 ns;
Signal  Kernel_ReadStatusRegComplete : EventTimeGuarded TimeEvent register := 0 ns;
-- Output Buffer 
Signal  Buffer_task             : BufferTaskGuarded BufferTask_type register;
-- Read Array 
Signal  Read_Status             : Status_type;
Signal  Read_mode               : ReadModeGuarded ReadMode_type register;
Signal  Read_task               : ReadTaskGuarded ReadTask_type register;
-- Page Buffer 
Signal  PageBuffer_task         : PageBufferTaskGuarded PageBufferTask_type register;
-- Page Program 
Shared Variable isPageProgramCmdCode   : Boolean := false;
Shared Variable isFirstData            : Boolean := false;
-- Program
Signal  Program_task            : ProgramTaskGuarded ProgramTask_type register;
Signal  Program_Status          : StatusGuarded Status_type register ;
-- Cache operations
signal CacheStatus                : CacheStatusGuarded CacheStatus_type register;  
Shared Variable isFirstCPoperation     : Boolean := true;
-- Copy Back Program
Shared Variable isCopyBackCmdCode      : Boolean := false;
Shared Variable waitFirstCopyBackAddress : boolean := false;
Signal updateCopyBackMode              : EventTimeGuarded TimeEvent register := 0 ns;
Signal isCopyBackMode                  : boolean := false;
Signal notActive_cmd                    : boolean := false;
-- Cache Read
Shared Variable isSR_underCACHEREAD    : Boolean := false;
-- Block Lock 
Signal  BlockLock_task          : BlockLockTaskGuarded BlockLockTask_type register;
Signal  BlockLock_Status        : Status_type;
Signal  BlockMode_on            : boolean := false; 
signal  BlockBoundary           : BlockBoundary_type;
Signal  SetBlocks               : EventTimeGuarded TimeEvent register;
Shared Variable isLatchBlockAddress : boolean := false;
Shared Variable isStartBlockAddress : Boolean := false;
Shared Variable isEndBlockAddress : Boolean := false;
-- Erase
Signal  Erase_task                   : EraseTaskGuarded EraseTask_type register;
Signal  Erase_Status                 : Status_type;
-- Electronic Signature
Signal  Signature_data               : SignatureData_type;
-- Status Register
Signal  StatusRegister_task          : StatusRegisterTaskGuarded StatusRegisterTask_type register;
-- DC Digitalizer Signal
Signal  VDD_check               : Boolean := false; 
-- Support Declaration
Constant ColumnAddress0 : Std_Logic_vector(ColumnAddress_range) := (Others => '0' );

-- output message used in multichip device
Constant chip_indication : string := "";




--  ===================== Architecture ============================== 


Begin                              

-------------------------------------------------------------------------
--- Component Istantation -----------------------------------------------
-------------------------------------------------------------------------

  ist_Kernel_entity : Kernel_entity
      generic map ( devId )
      Port map ( VDD, Read_status, CacheStatus, Program_Status, Erase_Status, Kernel_Status, Kernel_Report, 
                 Kernel_LatchAddress, Kernel_VerifyEvent, Kernel_ErrorEvent, Read_mode, Reset );

  ist_Read_entity : Read_entity 
      Generic map ( isDebug, devId )
      Port map ( Read_Status, DataBusBUFFER, hold_block, Signature_data, Read_mode, Kernel_ReadEvent, Read_task,
                 Kernel_ReadTaskComplete, kernel_ReadEventComplete, BlockLock_task, StatusRegister_task, 
                 PageBuffer_task, Kernel_PageComplete, Kernel_BlockLockComplete, Kernel_ReadStatusRegComplete, 
                 Kernel_Status, Kernel_Report, Reset );

  ist_Program_entity : Program_entity
      Port Map ( Program_Status, Program_Task, BlockLock_task, Kernel_BlockLockComplete, PageBuffer_task, Kernel_PageComplete,
                 VDD_check, Kernel_CUIcommand, Reset );

  ist_BlockLock_entity : BlockLock_entity
      generic map ( devId )
      Port map ( BlockLock_task, BlockBoundary, Kernel_BlockLockComplete, BlockLock_status, WP_N, SetBlocks, BlockMode_on, 
                 Reset );
                                
  ist_TimingCheck_entity : TimingCheck_entity 
      Port map ( I_O, E_N, R_N, W_N, AL, CL, WP_N, RB_N_int, timingCheck_on );


  ist_OutputBuffer_entity : OutputBuffer_entity 
      Port map ( DataBusBUFFER, DataBusOut, RLE_N, Buffer_Task, Reset );

  ist_Erase_entity : Erase_Entity
      port map ( Erase_Status, Erase_Task, PageBuffer_task, Kernel_PageComplete, BlockLock_task, BlockBoundary, 
                 Kernel_BlockLockComplete, Kernel_CUIcommand, Reset );

  ist_StatusRegister_entity : StatusRegister_entity
      generic map ( devId )
      port map ( Kernel_status, CacheStatus, Read_Status, Kernel_ReadStatusRegComplete, StatusRegister_task,
                 Kernel_CUIcommand, WP_N, Reset ); 

  ist_ElectronicSignature_entity : ElectronicSignature_entity
      port map ( Signature_data, Reset );

  ist_PageBuffer_entity : PageBuffer_entity 
      Generic map ( MemoryFile_Name, 0 )
      Port map ( PageBuffer_task, Kernel_PageComplete, CacheStatus, Program_task, Reset, Program_Status );



----------------------------------------------------------
----  Command Recognition (CUI decoders istantation)  ----
----------------------------------------------------------

CUIdec_ReadArraySetup: CUIdecoder_entity
       generic map (ReadCmdCode_cmd, ReadCmdCode_seqAddr, ReadCmdCode_CmdLen, false)
       port map (hold_Command, Kernel_CUIcommand, Kernel_VerifyEvent, Kernel_CommandDecode, Kernel_IseqCommand, notActive_cmd);

CUIdec_ReadArrayCfm: CUIdecoder_entity
       generic map (ReadCfmCode_cmd, ReadCfmCode_seqAddr, ReadCfmCode_CmdLen, false)
       port map (hold_Command, Kernel_CUIcommand, Kernel_VerifyEvent, Kernel_CommandDecode, Kernel_IseqCommand, notActive_cmd);

CUIdec_RandomDataOutputSetup: CUIdecoder_entity
       generic map (RandomDataOutputCmdCode_cmd, RandomDataOutputCmdCode_seqAddr, RandomDataOutputCmdCode_CmdLen, false)
       port map (hold_Command, Kernel_CUIcommand, Kernel_VerifyEvent, Kernel_CommandDecode, Kernel_IseqCommand, notActive_cmd);

CUIdec_RandomDataOutputCfm: CUIdecoder_entity
       generic map (RandomDataOutputCfmCode_cmd, RandomDataOutputCfmCode_seqAddr, RandomDataOutputCfmCode_CmdLen, false)
       port map (hold_Command, Kernel_CUIcommand, Kernel_VerifyEvent, Kernel_CommandDecode, Kernel_IseqCommand, notActive_cmd);

CUIdec_CacheRead: CUIdecoder_entity
       generic map (CacheRead_cmd, CacheRead_seqAddr, CacheRead_CmdLen, false)
       port map (hold_Command, Kernel_CUIcommand, Kernel_VerifyEvent, Kernel_CommandDecode, Kernel_IseqCommand, notActive_cmd);

CUIdec_ExitCacheRead: CUIdecoder_entity
       generic map (ExitCacheRead_cmd, ExitCacheRead_seqAddr, ExitCacheRead_CmdLen, false)
       port map (hold_Command, Kernel_CUIcommand, Kernel_VerifyEvent, Kernel_CommandDecode, Kernel_IseqCommand, notActive_cmd);

CUIdec_PageProgramSetup: CUIdecoder_entity
       generic map (PageProgramCmdCode_cmd, PageProgramCmdCode_seqAddr, PageProgramCmdCode_CmdLen, false)
       port map (hold_Command, Kernel_CUIcommand, Kernel_VerifyEvent, Kernel_CommandDecode, Kernel_IseqCommand, notActive_cmd);

CUIdec_PageProgramCfm: CUIdecoder_entity
       generic map (PageProgramCfmCode_cmd, PageProgramCfmCode_seqAddr, PageProgramCfmCode_CmdLen, false)
       port map (hold_Command, Kernel_CUIcommand, Kernel_VerifyEvent, Kernel_CommandDecode, Kernel_IseqCommand, notActive_cmd);

CUIdec_RandomDataInput: CUIdecoder_entity
       generic map (RandomDataInput_cmd, RandomDataInput_seqAddr, RandomDataInput_CmdLen, false)
       port map (hold_Command, Kernel_CUIcommand, Kernel_VerifyEvent, Kernel_CommandDecode, Kernel_IseqCommand, notActive_cmd);

CUIdec_CopyBackProgramSetup: CUIdecoder_entity
       generic map (CopyBackProgramCmdCode_cmd, CopyBackProgramCmdCode_seqAddr, CopyBackProgramCmdCode_CmdLen, false)
       port map (hold_Command, Kernel_CUIcommand, Kernel_VerifyEvent, Kernel_CommandDecode, Kernel_IseqCommand, notActive_cmd);

CUIdec_CopyBackProgramCfm: CUIdecoder_entity
       generic map (CopyBackProgramCfmCode_cmd, CopyBackProgramCfmCode_seqAddr, CopyBackProgramCfmCode_CmdLen, true)
       port map (hold_Command, Kernel_CUIcommand, Kernel_VerifyEvent, Kernel_CommandDecode, Kernel_IseqCommand, isCopyBackMode);

CUIdec_CacheProgramCfm: CUIdecoder_entity
       generic map (CacheProgramCfmCode_cmd, CacheProgramCfmCode_seqAddr, CacheProgramCfmCode_CmdLen, false)
       port map (hold_Command, Kernel_CUIcommand, Kernel_VerifyEvent, Kernel_CommandDecode, Kernel_IseqCommand, notActive_cmd);

CUIdec_BlockErase: CUIdecoder_entity
       generic map (BlockErase_cmd, BlockErase_seqAddr, BlockErase_CmdLen, false)
       port map (hold_Command, Kernel_CUIcommand, Kernel_VerifyEvent, Kernel_CommandDecode, Kernel_IseqCommand, notActive_cmd);

CUIdec_ReadStatusRegister: CUIdecoder_entity
       generic map (ReadStatusRegister_cmd, ReadStatusRegister_seqAddr, ReadStatusRegister_CmdLen, false)