ZHCSHJ2D February 2018 – April 2024 TUSB1044
PRODUCTION DATA
The TUSB1044 has (I2C_EN, UEQ[1:0], DEQ[1:0], CFG[1:0], and A[1:0]) 4-level inputs pins that are used to control the equalization gain, voltage linearity range, and place TUSB1044 into different modes of operation. These 4-level inputs utilize a resistor divider to help set the 4 valid levels and provide a wider range of control settings. There is an internal pull-up and a pull-down resistors. These resistors, together with the external resistor connection combine to achieve the desired voltage level.
| LEVEL | SETTINGS |
|---|---|
| 0 | Option 1: Tie 1 KΩ 5% to GND. Option 2: Tie directly to GND. |
| R | Tie 20 KΩ 5% to GND. |
| F | Float (leave pin open) |
| 1 | Option 1: Tie 1 KΩ 5%to VCC. Option 2: Tie directly to VCC. |
All four-level inputs are latched on rising edge of internal reset. After Tcfg_hd, the internal pull-up and pull-down resistors will be isolated in order to save power.