DPGEN_RF1D(3)						  Alliance - genlib User's Manual					     DPGEN_RF1D(3)

NAME

       DPGEN_RF1D, DPGEN_RF1DR0 - Register File with Decoder Macro-Generator

SYNOPSIS

       #include  <genlib.h>

       void GENLIB_MACRO (DPGEN_RF1D, char *modelname, long flags, long N);

       void GENLIB_MACRO (DPGEN_RF1DR0, char *modelname, long flags, long N);

DESCRIPTION

       Generate a register file of regNumber words of N bits with decoder named modelname. The DPGEN_RF1DR0 variant differs from the DPGEN_RF1D in
       that the register of address zero is stuck to zero. You can write into it, it will not change the value. When read, it will  always  return
       zero.

       How it works :

       o datain0 and datain1 : the two write busses. Only one is used to actually write the register word, it is selected by the sel signal.

       o sel : when set to '0' the datain0 is used to write the register word, otherwise it will be datain1.

       o adr, adw : the width (Y) of those signals is computed from regNumber : Y = log2(regNumber).

       o wen and ren : write enable and read enable, allows reading and writing when sets to '1'.

   TERMINAL NAMES
       1. ck : clock signal (input, 1 bit).

       2. sel : select the write bus (input, 1 bit).

       3. wen : write enable (input, 1 bit).

       4. ren : read enable (input, 1 bit).

       5. adr : the read address (input, Y bits).

       6. adw : the write address (input, Y bits).

       7. datain0 :  first write bus (input, N bits).

       8. datain1 :  second write bus (input, N bits).

       9. dataout : read bus (output, N bits).

       10.
	  vdd : power.

       11.
	  vss : ground.

EXAMPLE

       GENLIB_MACRO(DPGEN_RF1D, "model_rf1dx8_32"
			      , F_BEHAV|F_PLACE
			      , 32  /* Words size.	*/
			      , 8   /* Number of words. */
			      );

       GENLIB_LOINS( "model_rf1dx8_32"
		   , "instance1_rf1d_32"
		   , "ck"
		   , "sel"
		   , "wen"
		   , "ren"
		   , "adr[2:0]"
		   , "adw[2:0]"
		   , "datain0[31:0]"
		   , "datain1[31:0]"
		   , "dataout[31:0]"
		   , "vdd", "vss", NULL
		   );

SEE ALSO

       GENLIB_MACRO(3), genlib(1)

ASIM
/LIP6							   30 July 2004 						     DPGEN_RF1D(3)