SEW290 WCDMA Module
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Figure 4-6 Module PCM working time sequence diagram
4.6
USB 2.0
The module provides a USB2.0 high speed (480Mbps)interface, which is composed of VBUS, D+ and D-. The
module’s external circuit could connect directly with USB signal connector, but during the design process, try to
add ESD protection component to avoid damage. D12 in Figure 4-7 shows USB2.0 ESD protection component
with the junction capacitance is smaller than 3pF. VBUS could connect directly with VBUS at external host end.
The USB recommended voltage is: 3.0-5.6V, typical 5V.
Figure 4-7 USB2.0 external circuit reference design diagram
