Clock: Difference between revisions

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[[File:Clkdistribution.png|frame]]
[[File:Clkdistribution.png|frame]]
[[File:Cd2_quartz.jpg|thumb|System clock and color burst generation circuit on a CDM3-2 board.]]
[[File:Cd2_quartz.jpg|thumb|System clock and color burst generation circuit on a CDM3-2 board.]]
The main system clock is 24MHz. It is then divided by [[NEO-D0]] to 12MHz for the [[68k]], 6MHz for the [[GPU]] and 1MHz (?).
[[LSPC2-A2]] divides the 24MHz clock to 8MHz for the [[YM2610]] and 4MHz for the [[Z80]].
[[NEO-GRC]] does this on the NeoGeo CD ?
A second quartz is used on NeoGeo systems for generating the color burst frequency for the [[video encoder]]s.


[[Category:Base system]]
[[Category:Base system]]

Revision as of 17:04, 3 September 2011

File:Clkdistribution.png
File:Cd2 quartz.jpg
System clock and color burst generation circuit on a CDM3-2 board.

The main system clock is 24MHz. It is then divided by NEO-D0 to 12MHz for the 68k, 6MHz for the GPU and 1MHz (?).

LSPC2-A2 divides the 24MHz clock to 8MHz for the YM2610 and 4MHz for the Z80.

NEO-GRC does this on the NeoGeo CD ?

A second quartz is used on NeoGeo systems for generating the color burst frequency for the video encoders.