| primitive U_DF_P_SLEEPB_pg (Q, D, CP , SLEEPB, KAPWR, VGND, VPWR); |
| output Q; |
| input D, CP, SLEEPB, KAPWR, VGND, VPWR; |
| reg Q; |
| |
| // FUNCTION : POSITIVE EDGE TRIGGERED D FLIP-FLOP ( Q OUTPUT UDP ). |
| |
| |
| table |
| |
| // D CP SLEEPB KAPWR VGND VPWR : Qt : Qt+1 |
| |
| ? ? 0 1 0 * : ? : -; // Retain state during sleep |
| ? 0 f 1 0 1 : ? : -; // Retain state during sleep |
| ? 0 r 1 0 1 : ? : -; // Retain state during sleep |
| |
| ? 1 * 1 0 1 : ? : x; // SLEEPB cannot change unless CLK is low |
| ? x * 1 0 1 : ? : x; // SLEEPB cannot change unless CLK is low |
| ? ? * 1 0 x : ? : x; // SLEEPB cannot change unless VPWR is high |
| ? ? * 1 0 0 : ? : x; // SLEEPB cannot change unless VPWR is high |
| |
| 1 r 1 1 0 1 : ? : 1; // clocked data |
| 0 r 1 1 0 1 : ? : 0; |
| |
| 1 (x1) 1 1 0 1 : 1 : 1; // reducing pessimism |
| 0 (x1) 1 1 0 1 : 0 : 0; |
| 1 (0x) 1 1 0 1 : 1 : 1; |
| 0 (0x) 1 1 0 1 : 0 : 0; |
| |
| ? n 1 1 0 1 : ? : -; // no change on falling edge of CLK |
| |
| * ? ? 1 0 1 : ? : -; // ignore edges on data |
| |
| ? ? ? * ? 1 : ? : x; // unknown if kapwr changes |
| ? ? ? ? * 1 : ? : x; // unknown if vgnd changes |
| endtable |
| endprimitive |