Huawei Technologies Co. Ltd UM01-HW Manuel D’Utilisation
MC703 CDMA EV-DO Wireless Module V100R001
Product Description
Issue 1.00 (2009-9-10)
Huawei Proprietary and Confidential
Page 32 of 40
4.6 USB Bus
Working with the drives of a PC, the USB interface can be mapped to a serial interface of the
PC. The USB interface is mainly used for updating module applications, capturing software
logs, and testing module applications.
PC. The USB interface is mainly used for updating module applications, capturing software
logs, and testing module applications.
Table 4-4 Signals of the USB interface
Pin Number
Signal Name
Description
36
USB_D-
USB data line
38
USB_D+
USB data line
4.7 ADC Interfaces
The UM01-HW UMTS module supports two ADC interfaces for monitoring analog variables,
such as the environmental temperature variable.
such as the environmental temperature variable.
Figure 4-8 Reference circuits of the design of the ADC interfaces