View source for NEO-MGA

{{ChipInfo
|picture=cd1_neo-mga.jpg
|pkg=QFP160
|manu=fujitsu
|date=1994 ?
|gates=?
|used_on={{PCB|CDROM-2 board|CDROM-2}}, {{PCB|MV1A}}...
}}

Multi-purpose chip found in CD systems and some late MVS boards:
* NEO-MGA in the CD1 model (front loading).
* {{Chipname|NEO-MGA-T}} in the CD2 model (top loading) and {{PCB|MV1A}} MVS boards, can be swapped with NEO-MGA.
* {{Chipname|NEO-MGA2-SA}} in the [[CDZ]], replaces the {{Chipname|LC8953}} ?

It is used for address decoding, communication with the [[CD drive]], for refreshing {{Chipname|68k}} [[DRAM]], and for buffering serial [[CDDA]] data.

=CD pinout=

Pin 93: GND !

[[File:Neo-mga_CD_pinout.png|700px]]

[[File:Neo-mga_cd.odg]]

=MV1A pinout=

[[File:Neo-mga_MV1A_pinout.png|700px]]

[[File:Neo-mga_mv1a.odg]]

=Signals=

* DRM*, RAS, CAS, WRITE: See TC514400 DRAM datasheet.
* X*: See [[LC8953]] datasheet.

[[Category:Chips]]