NEO-YSA2: Difference between revisions

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[[File:brd_ysa2.jpg|thumb|NEO-YSA2 chip on a MVS [[cartridges|cartridge]]. Picture courtesy of [[http://www.mvs-scans.com MVS-Scans]].]]
{{ChipInfo
|picture=brd_ysa2.jpg
|pkg=QFP144
|manu=yamaha
|date=1999 ?
|gates=A lot !
|used_on={{PCB|MV1C|}}, [[CDZ]], [[ROM-Only boards]]...
}}


Later version of the [[NEO-YSA]] chip. Contains a [[Z80]] CPU, a [[YM2610]] audio synth and a [[YM3016]] DAC.
Later version of the {{Chipname|NEO-YSA}} chip. Contains a {{Chipname|YM2610}}, the {{Chipname|Z80}} CPU and its [[Z80 RAM|RAM]]. It is also used to handle player input.


Can also be found in the [[CDZ]].
Can be used with a [[http://www.datasheetcatalog.org/datasheet/rohm/bu9480f.pdf BU9480F]] 16bit stereo DAC.
 
=Pinout=
 
{{Pinout|NEO-YSA2|640}}
 
Pin 23: Input, read REG_STATUS_B.
 
=Test points=
 
Waveforms on test points during crosshatch screen:
 
<gallery>
Neo-ysa2_tp4.png|TP4
Neo-ysa2_tp5.png|TP5
Neo-ysa2_tp6.png|TP6
Neo-ysa2_tp7.png|TP7
Neo-ysa2_tp8.png|TP8
</gallery>
 
TP9, TP10 (under the board) and TP11 are all high.


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

Latest revision as of 18:07, 22 February 2023

Package QFP144
Manufacturer
First use 1999 ?
Used on MV1C, CDZ, ROM-Only boards...

Later version of the NEO-YSA chip. Contains a YM2610, the Z80 CPU and its RAM. It is also used to handle player input.

Can be used with a [BU9480F] 16bit stereo DAC.

Pinout


Edit this pinout

Pin 23: Input, read REG_STATUS_B.

Test points

Waveforms on test points during crosshatch screen:

TP9, TP10 (under the board) and TP11 are all high.