SDAA279 March   2026 TPLD1202 , TPLD1202-Q1 , TPLD2001 , TPLD2001-Q1

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction
  5. 2Programming Flow Chart
  6. 3Hardware Requirements and Selectable I2C/SPI Interface
  7. 4Temporary Configuration Procedure
  8. 5Permanent Programming Procedure
  9. 6Summary
  10. 7References

4 Temporary Configuration Procedure

This section will outline the configuration procedure. The following examples uses TI USB2ANY and the TPLD2001. This procedure can be replicated using any I2C or SPI host/controller and any TPLD that supports in-line programming.

Step 1: Start or re-start the device with the desired serial communications protocol, then read the DEVICE_ID from registers 0x000 and 0x001 to confirm that the communication with the device has been established.

Step 1: I2CFigure 4-1 Step 1: I2C
Step 1: SPIFigure 4-2 Step 1: SPI

Step 2: Enter configuration mode.

  • For SPI, send the following four frames with at least 200μs between frames: 0x9000B9, 0x90003E, 0x9000AF, 0x900058.
  • For I2C, use four write transactions to send the following with at least 500μs between transactions:
    • Transaction 1: BYTE0 = ADDR, BYTE1 = 0x01, BYTE2 = 0xB9
    • Transaction 2: BYTE0 = ADDR, BYTE1 = 0x01, BYTE2 = 0x3E
    • Transaction 3: BYTE0 = ADDR, BYTE1 = 0x01, BYTE2 = 0xAF
    • Transaction 4: BYTE0 = ADDR, BYTE1 = 0x01, BYTE2 = 0x58
Step 2: I2CFigure 4-3 Step 2: I2C
Step 2: SPIFigure 4-4 Step 2: SPI

Step 3: After the final frame is sent, wait 1ms.

Step 4: Make sure the configuration mode has been entered correctly by reading 0x10 from register 0x400.

Step 4: I2CFigure 4-5 Step 4: I2C
Step 4: SPIFigure 4-6 Step 4: SPI

Step 5: Put the device is reset mode by writing 0x02 to register 0x400.

Step 5: I2CFigure 4-7 Step 5: I2C
Step 5: SPIFigure 4-8 Step 5: SPI

Step 6: Send configuration bits to 0x200 - 0x3FF.

Step 7: If desired, use read commands to verify the correct data was written to the device.

Step 8: Then close the configuration by sending the following:

  • For SPI, send the following frame: 0x90004B.
  • For I2C, send the following write transaction: BYTE0 = ADDR, BYTE1 = 0x01, BYTE2 = 0x4B.

Step 8: I2CFigure 4-9 Step 8: I2C
Step 8: SPIFigure 4-10 Step 8: SPI

Step 9: Write 0x00 to register 0x400 for the configuration to take effect and exit reset mode.

Step 9: I2CFigure 4-11 Step 9: I2C
Step 9: SPIFigure 4-12 Step 9: SPI

Step 10: The device is now temporarily configured. This configuration can be cleared by power cycling the device.