| ??? 04/13/06 16:26 Read: times |
#114233 - Divide-by-12 = Divide-by-(2*6) Responding to: ???'s previous message |
Erik said:
Have a look at fig.15 on page 12 of ch1 and come back with "there is a divide by 2 of the clock" Kai Klaas said:
... Of course, this above mentioned flip-flop must be part of the internal divide-by-12 circuitry. Quite so: on page 11 of the Philips document, it says: Machine Cycles
A machine cycle consists of a sequence of 6 states, numbered S1 through S6. Each state time lasts for two oscillator periods. Thus a machine cycle takes 12 oscillator periods or 1ms if the oscillator frequency is 12MHz. Thus the "state time" must involve a divide-by-two from the oscillator frequency...? |
| Topic | Author | Date |
| Capacitor significance | 01/01/70 00:00 | |
| Search | 01/01/70 00:00 | |
| Why burden caps must not be omitted | 01/01/70 00:00 | |
| Thanks: But still some more | 01/01/70 00:00 | |
| because that is when the address need be | 01/01/70 00:00 | |
| Divide dy 2 | 01/01/70 00:00 | |
| Where is this divide by 2? | 01/01/70 00:00 | |
| Thank you SIR | 01/01/70 00:00 | |
| Beware of applying specifics in general! | 01/01/70 00:00 | |
| Re: clock division... | 01/01/70 00:00 | |
| I suggest you do not | 01/01/70 00:00 | |
| Misleading information | 01/01/70 00:00 | |
| Divide-by-12 = Divide-by-(2*6) | 01/01/70 00:00 | |
| Oops - 1us, not 1ms!! | 01/01/70 00:00 | |
| not exactly ... | 01/01/70 00:00 | |
| it would not be so simple | 01/01/70 00:00 | |
| Clock division - in summary | 01/01/70 00:00 | |
| Re: Clk division summary | 01/01/70 00:00 | |
| Language? | 01/01/70 00:00 | |
| ok ok one more help | 01/01/70 00:00 | |
Links | 01/01/70 00:00 |