SLLA578 June   2022 TLIN1431-Q1

 

  1.   Abstract
  2.   Trademarks
  3. 1Startup
    1. 1.1 Operational Voltages
    2. 1.2 Power-Up and INIT Mode
  4. 2Pin Control
    1. 2.1 Typical Application
    2. 2.2 Power-Up into Normal Mode in Pin Control
      1. 2.2.1 Restart Mode from INIT Mode in Pin Control
      2. 2.2.2 Standby Mode from Restart Mode in Pin Control
      3. 2.2.3 Normal Mode in Pin Control
    3. 2.3 Power-Up into Fast Mode in Pin Control
    4. 2.4 Sleep Mode to Normal Mode in Pin Control
    5. 2.5 Fail-Safe Mode to Normal Mode in Pin Control
  5. 3SPI Control
    1. 3.1 Typical Application
    2. 3.2 Power-Up into Normal Mode in SPI Control
      1. 3.2.1 Restart Mode from INIT Mode in SPI Control
      2. 3.2.2 Standby Mode from Restart Mode in SPI Control
      3. 3.2.3 Normal Mode in SPI Control
    3. 3.3 Power-Up into Fast Mode in SPI Control
    4. 3.4 Sleep Mode to Normal Mode in SPI Control
    5. 3.5 Fail-Safe Mode to Normal Mode in SPI Control
    6. 3.6 Configuring Watchdog through SPI
  6. 4Pin Assignments in Pin Control vs. SPI Control
  7. 5References

2.3 Power-Up into Fast Mode in Pin Control

Figure 2-6 Fast Mode in Pin Control

Fast mode is a mode designed for end-of-line programming, allowing for data rates up to 200 kbps. To enter fast mode, the same power-up procedure applies as outlined for in Section 2.2 up until the transition out of standby mode. To transition to fast mode from standby mode, implement the same setting as above, but input a low pulse of width tFMTXD on the TXD pin as shown in Figure 2-7. Thus, implement this setting:

  • TXD = low pulse for tFMTXD (see Figure 2-7)
  • nRST = high
  • EN = high for greater than tFM_CHANGE
Figure 2-7 Fast Mode from Standby Mode Sequence Timing in Pin Control