Specifications

Product Technical Specification & Customer Design Guidelines
32 Proprietary and Confidential - Contents subject to change 2400089
be characterized by the OEM. Note that throughput will be reduced and may vary
significantly based on packet size, host interface, and firmware revision. Sierra
Wireless does not recommend using this device in USB full speed mode.
User-developed drivers
If you will be developing your own USB drivers, see [5] AirCard / AirPrime USB
Driver Developer’s Guide (Doc# 2130634).
SIM interface
The module supports one SIM (Subscriber Identity Module) (1.8 V or 3 V). The
SIM holds account information, allowing users to use their account on multiple
devices.
The SIM pins (Ta bl e 4-4) provide the connections necessary to interface to a SIM
socket located on the host device as shown in Figure 4-3 on page 33. Voltage
levels over this interface comply with 3GPP standards.
Table 4-4: SIM interface signal
Name Pin Description SIM contact
number
1
Notes
USIM_PWR 8 SIM voltage 1 Power supply for SIM
USIM_DATA 10 Data I/O 7 Bi-directional SIM data line
USIM_CLK 12 Serial clock 3 Serial clock for SIM data
USIM_RST 14 Reset 2 Active low SIM reset
USIM_GND Ground 5 Ground reference
USIM_GND is common to module ground
1. See Figure 4-4 on page 33 for SIM card contacts.