NEO-MGA: Difference between revisions

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[[File:cd2_mga.jpg|right|thumb|NEO-MGA-T chip found on a CDM3-2 board.]]
[[File:cd1_neo-mga.jpg|right|thumb|NEO-MGA chip found in a CD1 system.]]


The NEO-MGA is a damn chip apparently noone knows about, which is found in 3 versions in the CD systems:
[[File:cd2_mga.jpg|right|thumb|NEO-MGA-T chip found in a CD2 system.]]
 
The NEO-MGA is a damn custom chip apparently noone knows about, which is found in 3 versions in the CD systems:
*NEO-MGA in the CD1 model (front loading)
*NEO-MGA in the CD1 model (front loading)
*NEO-MGA-T in the CD2 model ('''t'''op loading)
*NEO-MGA-T in the CD2 model (top loading)
*NEO-MGA-T2 in the CDZ probably able to handle the faster CD reading speeds and the new [[copy protection]] system.)
*NEO-MGA-T2 in the CDZ probably able to handle the faster CD reading speeds and the new [[copy protection]] system.)


It's used for communication between the main board and the [[CD modules|CD module]], for data transfers to the [[LC89515]] host and for buffering [[CDDA]] data.
It's used for communication between the main board and the [[CD modules|CD module]], for handling [[DRAM]] access (?) and for buffering [[CDDA]] data.


=Pinout=
=Pinout (NEO-MGA-T)=


1,10,15,16,18,30,41,50,59,70,81,90,110,121,130,139,150: Ground.
1,10,15,16,18,30,41,50,59,70,81,90,110,121,130,139,150: Ground.


[[Category:Chips]]
[[Category:Chips]]

Revision as of 13:30, 20 April 2011

File:Cd1 neo-mga.jpg
NEO-MGA chip found in a CD1 system.
NEO-MGA-T chip found in a CD2 system.

The NEO-MGA is a damn custom chip apparently noone knows about, which is found in 3 versions in the CD systems:

  • NEO-MGA in the CD1 model (front loading)
  • NEO-MGA-T in the CD2 model (top loading)
  • NEO-MGA-T2 in the CDZ probably able to handle the faster CD reading speeds and the new copy protection system.)

It's used for communication between the main board and the CD module, for handling DRAM access (?) and for buffering CDDA data.

Pinout (NEO-MGA-T)

1,10,15,16,18,30,41,50,59,70,81,90,110,121,130,139,150: Ground.