Schematic circuit and PCB of datacable for SIEMENS x55, x65 cellular phones
 

Schematic circuit and PCB of datacable for SIEMENS x55, x65 cellular phones
boundrate 120kbps

The datacable is assembled on MAX3232 and SMD elements. Two-sided PCB with perforation metallization is mounted inside the box of socket DB9 on its lamellas. A phone determine the datacable as DCA-500/510 – depends on an operating mode of COM-port because of a supply from its signals. Siemens EEPROM tool, WinSwup32, V_Klay, Mobile Phone Manager, SiMoCo, etc. works with it normally, i.e. access to contents EEPROM, upgrade software and data exchange pass without problems fast enough.

See also: Datacable.pdf