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USB communication can be performed in one of the following two ways:

through a USB connector
through USB lines at one B2B connector.

Only one connection type at one time is allowed.

USB Connector

TE0320 is provided with a USB mini-B receptacle (device) connector J1 on the top side.

Figure 20: USB mini-B receptacle (device) connector.
Figure 21 shows a sample USB connection between computer and TE0320 for both configuration and operation. The USB cable provides for

Power supply.
Configuration by means of the Firmware Upgrade Tool (FUT), recommended for field upgrades. Please use a dedicated JTAG Adapter during development.
Data communication channel during operation.

Figure 21: sample USB connection (TE0320 side).
In order to minimize the stub on USB lines and improve communication quality, the connection to both USB pins of B2B connector JM4 can be interrupted by removing resistors R3 and R4.

Figure 22: resistors R3 and R4 removed for lower stub on USB lines.
Should you require a module version without connector J1, please contact Trenz Electronic.

USB Pins

USB communication can be performed over 2 pins of B2B connector JM4 as detailed in Table 3. Ensure resistors R3 and R4 are populated to connect USB B2B pins B2B_D_P and B2B_D_P to USB lines D_P and D_P respectively.

pin number	pin name	signal name	description
4	B2B_D_P	D_P	USB data + (D+)
6	B2B_D_N	D_N	USB data - (D-)

Table 3: USB pins at B2B connector JM4.

Figure 23: Resistors R3 and R4 required for USB communication over B2B connector JM4.