SIMPLE clock expression

Below the top level (inside the process), most of the synthesized circuits are different. The process in SIMPLE constructs the circuit shown in Figure 5.14. This is the most basic demonstration of how a signal assignment inside a process with a clock expression template will infer flip flops. The synthesizer has used the most basic storage elements available - edge-triggered D-t)rpes. 

Hastings Our simple interpretation is that they don t have a clock to shift. As we move the LD schedule they just go completely with it on first cycle. There isn t evidence for any transient re-setting which would indicate that there is inertia in the behaviour that is reflective of a clock mechanism (Reddy et al 2002). I didn t show the LD cycle data, but if you look at Per expression on an LD cycle it is extremely low. The retinal mechanism in these mice is also impaired and Per induction can t be driven with light. 

If the clock reaction has been calibrated, i.e. if kp is known under the precise reaction conditions employed, then the absolute values of kAH (rate constant for hydrogen abstraction from the substrate AH) can be obtained using Equation 10.12. The relative rates of hydrogen abstraction for two different substrates AH and BH in separate reactions can also be determined using this simple reaction as long as the temperature, solvent system and concentrations remain the same for both reactions. It is then possible to compare kAH and ksH since kp remains constant throughout and can be eliminated from the expression. 

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