www.agelectronica.com www.agelectronica.com
www.agelectronica.com www.agelectronica.com
Enfora Enabler IIIG M2M
Modem Integration Guide
6.6.4. Level Translation Reference Power (Pin 77)
To be used as a voltage reference source ONLY. Do not connect current loads to this pin. This pin
must be decoupled to ground with at least a 0.1
μ
F capacitor at the output. Noise induced on this pin
will affect the performance of the baseband.
Low Power Mode is entered when RTCWAKE is used to power down the modem with just the RTC
running.
V
R
I/O
Parameter/Conditions
Min
Typ
Max
Units
Output voltage V
OUT
ON mode
LOW POWER mode
1.65
1.65
1.8
1.8
1.95
1.95
Vdc
Rated output current I
OUT
ON mode
LOW POWER mode
20
0.5
mA
6.6.5. USB (Pins 1, 3, 5, 7, 9)
This is for Enfora Debug only
Pin Name
Pin
Number
Signal
Direction
Description
USB_VBUS
1, 3
In
5 V tolerant power Supply VBUS line;
Used only as a USB sense, not for powering the
module. (optional connection)
USB_DP
5
Analog
I/O
5 V tolerant data plus pin in USB
USB_DM
7
Analog
I/O
5 V tolerant data minus pin in USB
ID_USB
9
Analog
I/O
5 V tolerant ID line, it defines the type of device
connected to the phone’s USB port;
And also the default state (host / device) at the
cable connection;
The transceiver senses the voltage of this pin to
determine if the pin is either floating
(typical),grounded or resistively connected to
ground (102 k
Ω
, 200 k
Ω
, 440 k
Ω
);
GSM0308IG002
41
Version 1.05 – 11/13/08