Sierra Wireless AirPrime SL808 Series, Product Technical Specification & Customer Design Manuallines, Page: 44 / 122

Product Technical Specification & Customer Design Guidelines
44 Proprietary and Confidential - Specifications subject to change 2400058
4.7 USB 2.0 interface
The AirPrime SL808X Embedded Module features a 3-wire USB slave interface
that complies with USB 2.0 protocol signaling.
Table 4-12 describes the purpose
and features of this interface.
3
CLK EXT_USIM_CLK
4
- -
5
GND GROUND
6
- -
7
I/O EXT_USIM_DATA
8
- -
Table 4-12: USB interface features
Feature Details
Purpose Host–module communication via AT commands, CnS objects,
etc.
Standard
•
USB 2.0 compliant
•
CDC 1.1 - ACM compliant
Data rates supported
•
Optimized for high speed (480 Mbps)
•
Full speed (12 Mbps)—Throughput performance is on an
“as-is” basis and must be characterized by the OEM.
Note: Throughput rates may vary significantly based on packet
size, host interface, and firmware revision.
Enumeration
•
Windows (using host Windows drivers)—COM ports
•
Linux (with Sierra Wireless driver)—/dev/ttyUSB
n
devices
Power supply
•
VCC supply
•
3.3 V type compatible
Additional features
•
Firmware download over USB
Table 4-11: SIM socket pin descriptions (Continued)
Pin Signal Description