Piedinature - Pinouts
Bosh 508 509 607 608 718 738

Bosch connector

Pin	Name	Signal Description	Direction
1	VIN	Input voltage - supply pin	IN
2	C-BUS	Bi-directional serial control bus	IN/OUT
3	I-BUS	Data input (internal 100k pullup)	IN
4	PA_BIAS_ON	Trigger signal synchronous withr TX burst
5	V-BATT	Connected directly to the MS battery
6	HF_ENABLE	HF enable output
7	IGNITION	Sensing ignition (in car kit)
8	D-BUS	Data output	OUT
9	CHG-ID	Charger ID - detects type of charger
10	GND	Ground-this pin is checked by HF
11	A-UL	Analog input to phone
12	AGND	Analog ground
13	A-DL	Analog output from phone
14	AGND	Analog ground
15	EQUIP-ID	Pulled low by HF, internal pullup 100k
16	GND	Ground

Piedinature - PinoutsBosh 508 509 607 608 718 738