How can I interface the TDI and TDO lines of the JTAG pins of MAX series devices that have different VCCIO levels? - How can I interface the TDI and TDO lines of the JTAG pins of MAX series devices that have different VCCIO levels? Description You can interface the TDI and TDO lines of the JTAG pins of MAX® series devices that have different V CCIO levels by inserting a level shifter between the devices. Refer to Configuring Mixed Altera FPGA Chains (PDF) for an example of how to interface the TDI and TDO lines of the JTAG pins that have different V CCIO levels. Custom Fields values: ['novalue'] Troubleshooting novalue False ['novalue'] ['novalue'] novalue novalue ['MAX® 7000A CPLD', 'MAX® 7000B CPLD', 'MAX® 7000S CPLD', 'MAX® 9000 CPLD', 'MAX® II CPLDs'] ['novalue'] ['novalue'] ['novalue']