Nokia Phones FAN-Site

The connector pinout for Nokia phones

(Looking from outside on the connector, keypad is on top. This description is valid for 51xx, 61xx and 71xx phones)

Pin	Name	Funktion	sonstiges	in / out
1	CHARGE	Charging voltage	0..8.5V, 0..850mA	in
2	CCONTROL	Charging control	PWM, 32..37 Hz, 1..99%	out
3	MIC / XMIC	Analog audio in	1Vpp / 100 Ohm	in
		Analog audio in (Headset)	200mVpp / 2.5 KOhm / BIAS 100..600uA	in
		Accessory mute	> 2.5V not muted < 1.5V muted	out
		Headset detection	> 1.5V no Headset / Data mode < 1.3V Headset connected	in
4	AGND	Analog ground
		Power Source for DLR3-cable	6210 : 2.8 V, 7110 : 3.3 V	out
5	EAR / XEAR	Analog audio out	U = 80mV - 1.0V	out
		Accessory detection	< 0.2V : Headset connected 0.5V : Accessory connected 2.8V : no accessory connected	in
		PTT-Button	connected to AGND when pressed	in
6	MBUS	Bidir. serial bus	9600 bps	in / out
7	FBUS RX	Serial data in	9600 - 230.400 bps < 0.8V : '0' > 2.0V : '1'	in
8	FBUS TX	Serial data out	9600 - 230.400 bps < 0.8V : '0' @ max. 4mA > 1.7V : '1' @ max. 4mA	out
9	SGND	Signal ground / Charging ground

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