NEO-BUF: Difference between revisions

Revision as of 10:17, 8 February 2011

Dual 74HC245 octal transceivers. This chip is extensively used in the NeoGeo CD to switch between DRAMs.

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 [[File:cd2_buf.jpg|right|thumb|NEO-BUF chip used to split DRAM access on a CDM3-2 board.]]
-Dual 8 bit bus switch.
+Dual 74HC245 octal transceivers.
+This chip is extensively used in the NeoGeo CD to switch between [[DRAM]]s.
-[[File:Neo-bufpinout1.png]]
+== Pinout ==
-Putting the CTRL lines high make the corresponding bus pass through the chip.
+[[File:Neo-buf_pinout.png]]
-Setting it low makes the output hi-Z. This chip is extensively used in the NeoGeo CD to switch in between [[DRAM]]s (both output buses are tied together to a common one, and go to the [[NEO-GRC]] or [[NEO-GRZ]] chips).
 [[Category:Chips]]