Samsung i700 interface port

19 pin Samsung PDA special connector at the device, looking at the i700 connector plug pins with the retainer hooks pointing up

Pin	Signal	Description
3	GND	shorted by R=44.5KOhm to pin 18 when keyboard attached
4	Rx	also Tx for keyboard
5	Tx
8	Ri
9	CTS
10	DTR
11	DSR
16	Vcc	power +5V, VDD for keyboard, +4.2V charging by i700 12V charger
17	GND
15		+1.5V charging by i700 12V charger
18		+0.66V charging by i700 12V charger
19		+6V charging by i700 12V charger

i700 Audio Jack Pinouts
tip = mike
ring = left audio
base = ground
outer ring = right audio