Siemens TC35i - Manual (Page 14)

TC35i Terminal Hardware Interface Description
Confidential / Released
TC35i_T_HD_v01.05 Page 14/37 10.07.2003
3.2 Block diagram of a GSM application
Figure 1 shows a block diagram of a sample configuration that incorporates a TC35i Terminal
and typical accessories.
Host
controller
Power
supply
RF interface
RS-232
interface
Power supply
on/off
Audio interface
Handset
Antenna
Terminal-
circuit
FFC
Modul
e i
nt
e
rf
ac
e
G
S
M E
ngi
ne
TC
35i
GSM Terminal TC35i T
LED
Customer
application
Air reference point
(ARP)
Data
sink/
source
Fuse
IGT_IN
PD_IN
Figure 1: Block diagram of a TC35i Terminal application (example)