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16 pin Bosch 509 cell phone proprietary connector layout
16 pin Bosch 509 cell phone proprietary connector
at the mobile phone (keypad up)
full pinout
Pin Name Signal Description Direction
8 VIN Input voltage - supply pin IN
16 C-BUS Bi-directional serial control bus IN/OUT
7 I-BUS Data input (internal 100k pullup) IN
15 PA_BIAS_ON Trigger signal synchronous withr TX burst  
6 V-BATT Connected directly to the MS battery  
14 HF_ENABLE HF enable output  
5 IGNITION Sensing ignition (in car kit)  
13 D-BUS Data output OUT
4 CHG-ID Charger ID - detects type of charger  
12 GND Ground-this pin is checked by HF  
3 A-UL Analog input to phone  
11 AGND Analog ground  
2 A-DL Analog output from phone  
10 AGND Analog ground  
1 EQUIP-ID Pulled low by HF, internal pullup 100k  
9 GND Ground  
Pinout status: +1 -0
According to 1 reports in our database (1 positive and 0 negative) the Bosch 509, 5xx-7xx cell phones cable connector pinout should be correct.

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