Changes between Initial Version and Version 1 of Xor2Vbe

Timestamp:

Apr 8, 2007, 12:40:20 PM (18 years ago)

Author:

alain

Comment:

--

Xor2Vbe

@@ +1 @@
+{{{
+ENTITY xr2_x1 IS
+GENERIC (
+  CONSTANT area          : NATURAL := 2250;
+  CONSTANT cin_i0        : NATURAL := 21;
+  CONSTANT cin_i1        : NATURAL := 22;
+  CONSTANT rdown_i0_q    : NATURAL := 2850;
+  CONSTANT rdown_i1_q    : NATURAL := 2850;
+  CONSTANT rup_i0_q      : NATURAL := 3210;
+  CONSTANT rup_i1_q      : NATURAL := 3210;
+  CONSTANT tplh_i1_q     : NATURAL := 261;
+  CONSTANT tphl_i0_q     : NATURAL := 292;
+  CONSTANT tplh_i0_q     : NATURAL := 293;
+  CONSTANT tphh_i0_q     : NATURAL := 366;
+  CONSTANT tphl_i1_q     : NATURAL := 377;
+  CONSTANT tpll_i1_q     : NATURAL := 388;
+  CONSTANT tpll_i0_q     : NATURAL := 389;
+  CONSTANT tphh_i1_q     : NATURAL := 405;
+  CONSTANT transistors   : NATURAL := 12
+);
+PORT (
+  i0     : IN  BIT;
+  i1     : IN  BIT;
+  q      : OUT BIT;
+  vdd    : IN  BIT;
+  vss    : IN  BIT
+);
+END xr2_x1;
+
+ARCHITECTURE vbe OF xr2_x1 IS
+
+BEGIN
+  ASSERT ((vdd AND NOT (vss)) = '1')
+  REPORT "power supply is missing on xr2_x1"
+  SEVERITY WARNING;
+  q <= (i0 XOR i1) AFTER 1000 ps;
+END;
+}}}