User Guide

PAMS
Technical Documentation
NME–3
Technical Information
Page 37
Issue 1 10/99
Table 13. Ignition sense
Parameter max typ min Notes
active voltage Ignition ON 16 V 13,5 V 9 V
inactive voltage Ignition OFF 0,3 V 0 V
Current taken from this signal 1 mA 10mA
Maximum voltage in Fault condi-
tion
28 V
80V
for up to 60s
for 500mS
Implementation
The Ignition sense Input is limited to 2.8V via an Resistor/ Z–Diode
combination. The resuting signal is routed to a GENIO of the MAD, it is
also a trigger signal for the wakeup logic.
Car Radio Mute
This signal is an output of CD949. It is an open collector output that is
turned Low when a call is active.
Table 14. Antenna motor control
Parameter max typ min Notes
High voltage 16 V 9 V No call active
Low voltage 0.3 V call active
External pullup resistor 1 kW
maximum drive current 150 mA
The CRM implementation is reused from PHF–4, but is is not forfilling the
Low–voltage requirement of 0.3V at the moment. But it is no real problem
to make a version that forfills this specification.
Antenna Motor Control
This signal is an output of CD949. It is turned high when the phone ON
and turned LOW when the phone is turned off
Table 15. Antenna motor control
Parameter max typ min Notes
Phone On 16 V 9V
Phone Off 0.3V 0V
drive current 100mA
The Implementation of the AMC is completelly reused from DME–1D