Specifications

TC35 / TC37 Hardware Interface Description
TC35_37_HD_02_V03.10 - Released Page 19 of 92 21.12.2001
2.3 Block diagram of TC37
Figure 2 shows a block diagram of the TC37 module and illustrates the major functional
components:
• GSM baseband processor
• GSM radio
• Power supply (ASIC)
• Flash
• ZIF connector
• Antenna interface: Coaxial switching connector
and antenna pad (to be used alternatively)
Figure 2: Block diagram of TC37
GSM Baseband Processor
Power Supply ASIC
SIEMENS GSM Engine TC37
Radio
Ignition
MIC 1
MIC 2 (handsfree)
Earpiece 1
Earpiece 2 (handsfree)
VBATT+
RS-232
SIM
ACCU_TEMP
VDD = 2.9 V
Synchronization
Flash
Power Down
Ground
POWER (charger)
ZIF Connector 40 Pins
2
2
2
2
6
8
1
1
1
2
5
1
5
1
1
RTC backup
Antenna jack
(alternative
to pad)
Antenna
Additional ground pad
Antenna
pad