Enabler II-G Assiste GPS Integration Guide - Farnell

Enfora Enabler III-G
Modem Integration Guide
6.6.18. 13 MHz output (Pin 52)
A 13 MHz signal is available as an output from the module. This signal should only be used as an input
to a high impedance device. Additional loads or capacitance on the line may cause performance issues
with the module. If the line is not used, leave floating.
13 MHz Clock-Out Parameter/Conditions Min Typ Max Units
VIH TBD Vdc
VIL 0.3 Vdc
Maximum capacitor load TBD pF
Maximum resistive load TBD Ω
Frequency ±0.1 ppm when registered on
GSM network;
±12 ppm typical when not
registered;
13.000 MHz
6.6.19. Analog-To-Digital Input (Pin 74)
The monitoring ADC (MADC) consists of a successive approximation 10–bit analog–to–digital converter
(ADC).
Analog-To-Digital Input Parameter/Conditions Min Typ Max Units
ADCBRES ADC Binary Resolution 10 Bits
ADCREF ADC Reference Voltage 1.75 Vdc
VADC ADC Range 0 1.75 Vdc
Integral/Differential Non-
-2 2 LSB
Linearity
Input Leakage tbd μA
Retuning Frequency 1 MHz
6.6.20. Handset Microphone Input (Pins 65, 67)
The handset differential inputs MICIP and MICIN can be amplified by the differential handset microphone
amplifier. This amplifier has a gain of 25.6 dB and a bias generator MICBIAS provides an external voltage
of 2 V or 2.5 V to bias the microphone.
Handset Mic Input Parameter/Conditions Min Typ Max Units
Maximum Input Range –
Mic(+) to Mic(-)
Nominal Ref. Level –
Mic(+) to Mic(-)
Differential Input
Resistance –
Mic(+) to Mic(-)
Microphone Pre-
Amplifier Gain
Inputs 3 dBm0 (Max. digital
sample amplitude when PGA
gain set to 0 dB)
Differential MIC
Differential MIC, MICAMP gain
= 25.6 dB
(INMODE = 0001)
Differential MIC
32.5 mVRMS
-10 dBm0
36 kΩ
25.6 dB
GSM0308PB001 55 Version 1.03– 7/17/2007