BU3266 / BU3270 pinout: Difference between revisions
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Krzysiobal (talk | contribs) m (Krzysiobal moved page BU3270S pinout to BU3266 / BU3270 pinout) |
m (https://forums.nesdev.com/viewtopic.php?p=268199#p268199) |
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| Line 2: | Line 2: | ||
.---v---. | .---v---. | ||
INV 3I -> |01 32| -- +5V | |||
INV 3O <- |02 31| ?? NC | |||
M2 -> |03 30| ?? NC | M2 -> |03 30| ?? NC | ||
A15 -> |04 29| -> /ROMSEL | A15 -> |04 29| -> /ROMSEL | ||
| Line 13: | Line 13: | ||
P0 D1 -> |10 23| -> CPU D1 | P0 D1 -> |10 23| -> CPU D1 | ||
P1 D2 -> |11 22| <- /INP0 ($4016 /RD) | P1 D2 -> |11 22| <- /INP0 ($4016 /RD) | ||
P0 D2 -> |12 21| <- /INP1 ($4017 /RD) | |||
P1 D3 -> |13 20| -> CPU D2 | P1 D3 -> |13 20| -> CPU D2 | ||
P1 D4 -> |14 19| -> CPU D3 | P1 D4 -> |14 19| -> CPU D3 | ||
| Line 21: | Line 21: | ||
Notes: | Notes: | ||
* INV 1I/O (16-17) = Audio Inverter | * INV 1I/O (16-17) = Audio Inverter | ||
* | * INV 2I/O (25-26) = PA13 Inverter | ||
* INV 3I/O (01-02) = unused | |||
Source: | Source: | ||
Revision as of 22:29, 12 March 2021
Custom Nintendo PIO chip found in the New Famicom (HVC-101). This replaces the U3 (139) and the U7/U8 (368).
.---v---.
INV 3I -> |01 32| -- +5V
INV 3O <- |02 31| ?? NC
M2 -> |03 30| ?? NC
A15 -> |04 29| -> /ROMSEL
A14 -> |05 28| -> PPU /CE
A13 -> |06 27| -> CPU RAM /CE
P1 D0 -> |07 26| <- INV 2I
P0 D0 -> |08 25| -> INV 2O
P1 D1 -> |09 24| -> CPU D0
P0 D1 -> |10 23| -> CPU D1
P1 D2 -> |11 22| <- /INP0 ($4016 /RD)
P0 D2 -> |12 21| <- /INP1 ($4017 /RD)
P1 D3 -> |13 20| -> CPU D2
P1 D4 -> |14 19| -> CPU D3
GND -- |15 18| -> CPU D4
INV 1I -> |16 17| -> INV 1O
'-------'
Notes:
- INV 1I/O (16-17) = Audio Inverter
- INV 2I/O (25-26) = PA13 Inverter
- INV 3I/O (01-02) = unused
