3 EVM Jumper and Switch Configuration

The TUSB216IEVM has two 3x3 headers and a 6x2 header in each board partition to facilitate configuration changes. The BOOST and RX_SEN 3x3 headers are arranged to allow for all possible device configurations, including connecting RX_SEN to a LED so that the ENA_HS status output can be viewed easily. The corner pins of the 3x3 headers are not connected.

The 6x2 header adds the ability to connect on-board pullups to the SDA and SCL pins to support I2C operation. If I2C mode is not needed, the SCL/CD pin can be connected to a LED so the CD status can be easily checked. Also, the 6x2 header provides connections for ground and to supply power manually to EVM. In addition, the header adds the ability to enable CDP mode on the TUSB216I.

Changing these switch and jumpers settings without a complete understanding of the result is not recommended. Configuration inputs are only read by the TUSB216I during power on reset or after de-asserting the RSTN pin, changing these switch settings while the EVM is powered on has no effect. Refer to the device data sheet for detailed pin descriptions and functionality along with EVM schematic for additional information.

The switch definitions are as follows:

RSTN Push button Switch (SW1, SW2, SW3):

• Push button to place redriver device in RESET
• Release to de-assert RESET

Table 3-2 includes the BOOST Jumper Settings.

1. Center pin to bottom position sets BOOST Level 0
2. Center pin to left position sets BOOST Level 1
3. Center pin to top position sets BOOST Level 2
4. No connect of the center pin sets BOOST Level 3

   Right Position of BOOST Jumper is short to GND.

Table 3-3 includes the RX_SEN Jumper Settings.

1. Top position sets low RX sensitivity.
2. No connect of the center pin sets mid RX sensitivity
3. Center pin to left position sets high RX sensitivity
4. Center pin to bottom position enables the ENA_HS status LED.

   Right Position of RX_SEN jumper is short to GND.