Xplore Technologies Corp. MC7750 Manual Do Utilizador

Electrical Specifications

Rev 4  Sep.11

Proprietary and Confidential - Contents subject to change

29

The host provides power to the MC7750 through multiple power and ground pins 
as summarized in 

The host must provide safe and continuous power at all times; the module does 
not have an independent power supply, or protection circuits to guard against 
electrical issues.

The USB interface is the path for communication between the host and module.

The interface complies with the [12] Universal Serial Bus Specification, Rev 2.0, 
and the host device must be designed to the same standard. (When designing 
the host device, careful PCB layout practices must be followed.)

USB interface features include:

Data rate: Full-speed (12 Mbps) / High-speed (480 Mbps)

Module enumeration:
· Windows: Modem or COM ports, using host Windows drivers
· Linux:  / dev / ttyUSBn devices for Linux systems with the Sierra Wireless 

driver installed

USB-compliant transceivers

Selective suspend mode

Resumption initiated by host or module

This device has been designed to achieve optimal performance and maximum 
throughput using USB high speed mode. Although the device may operate with a 
full speed host, throughput performance will be on an “as is” basis and needs to 

VCC

2, 24, 39, 41, 52

Voltage range

Ripple voltage

-

-

100

mV

pp

GND

4, 9, 15, 18, 21, 26, 
27, 29, 34, 35, 37, 
40, 43, 50

-

-

0

-

V

USB_D-

36

USB data negative

USB_D+

38

USB data positive