Xircom An Intel Company GEM3501 User Manual
Core Engine GSM/GPRS Modem Developer Guide Preliminary Draft: 7/6/2001
13
Part Number: 07100026, Revision: 002
Confidential
© 2001 Xircom, Inc., an Intel company All rights reserved.
All trademarks and copyrights are the property of Xircom, Inc., an Intel company
All trademarks and copyrights are the property of Xircom, Inc., an Intel company
4
4
C
C
A
A
R
R
R
R
I
I
E
E
R
R
B
B
O
O
A
A
R
R
D
D
Figure 1: Core Engine Carrier Board (Rev B)
NOTE: The carrier board is intended for development only, and is not suitable for
performing RF qualification.
performing RF qualification.
4.1 Core Engine Modem I/O Interface [P4]
The Core Engine modem connects to the carrier board using a 60-pin connector
(connector P4 on the carrier board). The I/O interface signals are described in Table 2.
(connector P4 on the carrier board). The I/O interface signals are described in Table 2.
Pin
Signal
Name
I/O
Functionality
Parameters
1
VCC
*
•
0.5A per contact maximum
current per contact.
current per contact.
•
Vin= 3.7 +/- 0.3 Volt
2
VCC
*
•
0.5A per contact maximum
current per contact.
current per contact.
•
Vin= 3.7 +/- 0.3 Volt
[P4] Core Engine
I/O connector.
I/O connector.
[J3] SIM holder.
[JP2] Audio port select jumper.
[P2] DB-9 for
secondary
serial port.
secondary
serial port.
[P3] DB-9
for primary
serial port.
for primary
serial port.
[J7, J8, J10]
Power
3.7V (+/-0.3V).
3.7V (+/-0.3V).
[DS1] Status LED.
[J5] Connector
for cable to
Core Engine
RF antenna
connector.
for cable to
Core Engine
RF antenna
connector.
[P1] RJ-9 for
primary audio port
(differential).
primary audio port
(differential).
[J4] Header access to
Core Engine I/O pins.
Core Engine I/O pins.
[J6] SMA RF
antenna
connector.
antenna
connector.
[J1] Secondary
audio port (single-
ended).
audio port (single-
ended).
[J2, J9] GND ref points.