NEO-YSA2: Difference between revisions
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|pkg=QFP144 | |pkg=QFP144 | ||
|manu=yamaha | |manu=yamaha | ||
|date= | |date=1999 ? | ||
|gates=A lot ! | |gates=A lot ! | ||
|used_on={{PCB|MV1C|}}, [[CDZ]], [[ROM-Only boards]]... | |used_on={{PCB|MV1C|}}, [[CDZ]], [[ROM-Only boards]]... | ||
| Line 15: | Line 15: | ||
{{Pinout|NEO-YSA2|640}} | {{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
Pin 23: Input, read REG_STATUS_B.
Test points
Waveforms on test points during crosshatch screen:
-
TP4
-
TP5
-
TP6
-
TP7
-
TP8
TP9, TP10 (under the board) and TP11 are all high.