Zynq 7000 cannot find JTAG while booting from QSPI
I cannot detect the JTAG interface while booting from QSPI(not booting successfully). I used my oscillograph to observe the TMS, TCK, TDI, TDO signals, they performed normally. When I change the booting MIO pins from QSPI mod to JTAG mod, JTAG interface can be detected. My question is: why can't I detect JTAG in QSPI mod, even if it failed booting from QSPI?