OpenOCD - JTAG

tags: JTAG, OpenOCD, FT2232, FT232

FTDI FT2232H-56Q Mini Module

• 4K Bytes Tx and Rx data buffers per interface

• ftdi/minimodule.cfg in OpenOCD

  • nSRST defined on pin CN2-13 of the MiniModule (pin ADBUS5 [AD5] on the FT2232H chip) => OpenOCD uses FT2232H's channel A

  • Table 3.1 FT2232H Pin Configurations for 64-pin QFN and LQFP package of FT2232H Dual High Speed USB to Multipurpose UART/FIFO IC Datasheet:
    

  • Table 3.13 FT2232H Pin Configurations for 56-pin VQFN package of FT2232H Dual High Speed USB to Multipurpose UART/FIFO IC Datasheet:
    

• Table 3.1 FT2232H-56Q Mini Module Connection–CN2 of FT2232H-56Q Mini Module Datasheet:
  

• Module connect pins:

  Pin #	Function
  AD0	TCK
  AD1	TDI
  AD2	TDO
  AD3	TMS
  AD5	nTRST

• The quality of USB wire is really important!!!

FTDI FT232H

• 1K Bytes Tx and Rx data buffers
• ftdi/um232h.cfg in OpenOCD
• FT232H SINGLE CHANNEL HI-SPEED USB TO MULTIPURPOSE UART/FIFO IC Datasheet
  
• Use it in MPSSE mode.
• Module connect pins:

  Pin #	Function
  AD0	TCK
  AD1	TDI
  AD2	TDO
  AD3	TMS
  AC0	nTRST
  AC1	nSRST

FTDI C232HM-DDHSL-0/C232HM-EDHSL-0

• ftdi/c232hm.cfg in OpenOCD
• Cable datasheet
• Figure 3-1 C232HM MPSSE Cable Connections (numbers refer to pad numbers on the PCB)