Nokia Pop-port pinout

This external connector for Nokia 2112, 2115(i), 2116i, 2125i, 2126i, 2128i, 2270, 2272, 2280, 2285, 3100, 3105, 3108, 3120, 3125, 3200, 3205, 3220, 3300, 3570, 3580, 3585(i), 3586(i), 3587(i), 3588i, 3589i, 3220, 5100, 5140, 6011i, 6012, 6015(i), 6016i, 6019i, 6020, 6100, 6101, 6102, 6108, 6200, 6220, 6225, 6560, 6585(i), 6610, 6610i, 6800, 6810, 6820, 6822, 6200, 7200, 7210, 7250, 7250i, 7260, 7360, 7610, 9300, E50, E60, E61, E61i, E65, E70, N70, N71, N72, N73, N80, N90, N92, N93, N93i.....

The port contains signals for handsfree microphone, stereo speakers, FBus Rx/Tx or USB signals for the phones supporting them, power output for feeding the accessories that don"t have their own batteries, and the Accessory Control Interface (ACI), a bidirectional serial control bus for connection of phone accessories, with a proprietary protocol.

Pin Number	Pin Name	Description
1	Vin	Charger input
2	GND	Charger ground
3	ACI	Accessory Control Interface (short with pin 2 for handsfree recognition)
4	V Out	Connected to pin 3 in DKU-2 usb data cable
5	USB Vbus	Also act as USB power detection? Should be connected to USB pin 1 in usb data cable.
6	FBus Rx/USB D+	USB exists only in some models*. Should be connected to USB pin 3 in usb data cable.
7	FBus Tx/USB D-	USB exists only in some models*. Should be connected to USB pin 2 in usb data cable.
8	GND	Data GND
9	X Mic-	Audio in - Ext. Mic input negativ
10	X Mic+	Audio in - Ext. Mic input positiv
11	HS Ear L-	Audio out - Ext. Audio out - left, negativ
12	HS Ear L+	Audio out - Ext. Audio out - left, positiv
13	HS Ear R-	Audio out - Ext. audio out - right, negativ
14	HS Ear R+	Audio out - Ext. audio out - right, positiv. Pins 10-14 may be used for antenna connection.
	GND	shield GND in cavities

* Nokia N70, N90, N91, 3230, 3300, 6155, 6170, 6230, 6230i, 6235, 6255, 6260, 6630, 6650, 6670, 6680, 6681, 7270, 7600, 7610, 7700, 7710, 9300, 9500 and some others. You may connect these phones to computer USB port by simple straight-wired USB cable (see DKU-2 schematic above).