SLLU341 July   2022 TMDS1204

 

  1.   Abstract
  2.   Trademarks
  3. 1Overview
    1. 1.1 What is the TMDS1204 EVM?
    2. 1.2 What is Included in the TMDS1204EVM?
    3. 1.3 What Does the EVM Look Like?
  4. 2Hardware Configuration
    1. 2.1 Power
    2. 2.2 Enable or Reset
    3. 2.3 Configuration Jumpers
    4. 2.4 Rx EQ Configuration
    5. 2.5 HPD Snoop Option
    6. 2.6 Local I2C Access
  5. 3Quick Start Guide
  6. 4Schematics
    1.     16
    2.     17
    3.     18
    4.     19
    5.     20
    6.     21
    7.     22
    8.     23
  7. 5References

2.2 Enable or Reset

There are three device enable or reset options to use with the EVM, and are as follows:

  1. Supervisor circuitry option. This is the default configuration on the EVM. The enable (EN) signal is held low until the power good (REG_PG) from the 3.3 V voltage regulator reaches a stable high voltage level then is released high.
  2. RC timing option. C26 external capacitor and internal resistor are used on control the EN pin ramp time after the device is powered on. C26 is a DNI (Do Not Install option) by default. C26 needs to be installed and R77 needs to be uninstalled to enable this option.
  3. External control option. A push button (SW1) is provided to manual control the EN pin.