SRC/rr_graph_area.h File Reference

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Functions
void	count_routing_transistors (enum e_directionality directionality, int num_switch, t_segment_inf *segment_inf, float R_minW_nmos, float R_minW_pmos)

Function Documentation

void count_routing_transistors	(	enum e_directionality	directionality,
		int	num_switch,
		t_segment_inf *	segment_inf,
		float	R_minW_nmos,
		float	R_minW_pmos
	)

Definition at line 50 of file rr_graph_area.c.

00055 {
00056 
00057 /* Counts how many transistors are needed to implement the FPGA routing      *
00058  * resources.  Call this only when an rr_graph exists.  It does not count    *
00059  * the transistors used in logic blocks, but it counts the transistors in    *
00060  * the input connection block multiplexers and in the output pin drivers and *
00061  * pass transistors.  NB:  this routine assumes pass transistors always      *
00062  * generate two edges (one forward, one backward) between two nodes.         *
00063  * Physically, this is what happens -- make sure your rr_graph does it.      *
00064  *                                                                           *
00065  * I assume a minimum width transistor takes 1 unit of area.  A double-width *
00066  * transistor takes the twice the diffusion width, but the same spacing, so  *
00067  * I assume it takes 1.5x the area of a minimum-width transitor.             */
00068     if(directionality == BI_DIRECTIONAL)
00069         {
00070             count_bidir_routing_transistors(num_switch, R_minW_nmos,
00071                                             R_minW_pmos);
00072         }
00073     else
00074         {
00075             assert(directionality == UNI_DIRECTIONAL);
00076             count_unidir_routing_transistors(segment_inf, R_minW_nmos,
00077                                              R_minW_pmos);
00078         }
00079 }

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SRC/rr_graph_area.h File Reference

Functions

Function Documentation