NES:Connector Pinouts

A/V Connector Pinout

Note: This connector is only available on the AV Famicom and a small handful of NES top loaders. It only carries composite video with dual mono audio, but does have the necessary pins present for S-video and RGBS outputs.

Main article:Nintendo Multi Out

Famicom Cartridge Pinout

Note: Pins 1 through 30 are towards the front and numbered from left to right. Pins 31 through 60 are towards the back and also numbered from left to right. This table is oriented so the front of the port is facing left.

Pin #	Name	Description	Pin #	Name	Description
1	GND		31	5V
2	CPU A11		32	M2	CPU clock output
3	CPU A10		33	CPU A12
4	CPU A9		34	CPU A13
5	CPU A8		35	CPU A14
6	CPU A7		36	CPU D7
7	CPU A6		37	CPU D6
8	CPU A5		38	CPU D5
9	CPU A4		39	CPU D4
10	CPU A3		40	CPU D3
11	CPU A2		41	CPU D2
12	CPU A1		42	CPU D1
13	CPU A0		43	CPU D0
14	CPU R/W		44	ROMSEL	Outputs the logical NAND gate of M2 and CPU A15
15	IRQ		45	2A03 Audio Input	Inputs audio from the Famicom into the cartridge
16	GND		46	Audio Output	Outputs mixed audio from the cartridge back into the Famicom
17	PPU Read		47	PPU Write
18	PPU RAM A10		48	CE	Connected to the PPU RAM
19	PPU A6		49	PPU A13
20	PPU A5		50	PPU A7
21	PPU A4		51	PPU A8
22	PPU A3		52	PPU A9
23	PPU A2		53	PPU A10
24	PPU A1		54	PPU A11
25	PPU A0		55	PPU A12
26	PPU D0		56	PPU A13
27	PPU D1		57	PPU D7
28	PPU D2		58	PPU D6
29	PPU D3		59	PPU D5
30	5V		60	PPU D4

Famicom Expansion Pinout

Note: Male is connector at the console. Female is connector at the controller. Diagram pictured is of the connector at the controller end.

Pin #	Description
1	GND
2	2A03 Audio Out (note that this does not carry cartridge audio)
3	IRQ
4	D4 Controller 2
5	D3 Controller 2
6	D2 Controller 2
7	D1 Controller 2
8	D0 Controller 2
9	Controller 2 OE
10	Digital Output 2
11	Digital Output 1
12	Digital Output 0
13	D1 Controller 1
14	Controller 1 OE
15	5V

NES Expansion Port

Note: This connector is only found on the original front loading NES.