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Unformatted text preview: r . SCOAP measures of a D flip-flop with a synchronous, as opposed to asynchronous, reset are shown in [Bushnell 2000]. First, we calculate the combinational and sequential controllability measures of all signals. In order to control signal d to 0, either input a or b must be set to 0. In order to control d to 1, both inputs a and b must be set to 1. Hence, the combinational and sequential controllability measures of signal d are: CC0 ±d² = min ³ CC0 ±a²´ CC0 ±b²µ + 1 SC0 ±d² = min ³ SC0 ±a²´ SC0 ±b²µ CC1 ±d² = CC1 ±a² + CC1 ±b² + 1 SC1 ±d² = SC1 ±a² + SC1 ±b² Reset CK d Q q r a b D ± FIGURE 2.2 SCOAP sequential circuit example....
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- Spring '08