[Figure 1, callout 24]
The FT4232HL U8 multi-function USB-UART on the VCU128 board provides three level-shifted UART connections through the single micro-AB USB connector J2.
- Channel A is configured in JTAG mode to support the JTAG chain
- Channel B implements 4-wire UART0 (level-shifted) FPGA U1 bank 67 connections
- Channel C implements 4-wire UART1 (level-shifted) FPGA U1 bank 67 connections
- Channel D implements 2-wire (level-shifted) SYSCTLR U42 bank 501 connections
The USB UART interface circuit is shown in the following figure. The FTDI FT4232HL data sheet is available on the Future Technology Devices International Ltd. website.
Figure 1. FTDI USB JTAG/UART Circuit
