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| [[Category:Pinouts]] | | #REDIRECT [[Expansion port]] |
| ==Pinout of 15-pin Famicom expansion port==
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| ( Female DA-15 on peripheral )
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| /\
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| | \
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| GND | 01 \
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| | 09 | /OE for joypad 2
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| SOUND | 02 |
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| | 10 | Out 2 ($4016.2)
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| IRQ | 03 |
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| | 11 | Out 1 ($4016.1)
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| Joypad 2 D4 | 04 |
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| | 12 | Out 0 ($4016.0, Strobe)
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| Joypad 2 D3 | 05 |
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| | 13 | Joypad 1 D1
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| Joypad 2 D2 | 06 |
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| | 14 | /OE for Joypad 1
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| Joypad 2 D1 | 07 |
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| | 15 | +5V
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| Joypad 2 D0 | 08 /
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| | /
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| \/
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| ===Signal descriptions===
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| ;Digital inputs to the Famicom:Joypad 1 D1, Joypad 2 D1…D4
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| ;Digital outputs from the Famicom:Out 0, 1, 2; /OE for both joypads
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| ;Open-collector bidirectional: IRQ
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| ;Analog outputs: SOUND (before expansion audio is mixed in)
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| ;Depends on context: Joypad 2 D0 (In the original famicom, permanently connected to player 2 controller, so an output. On the AV famicom, the player 2 controller could be removed, and allow for this to be an input)
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