Hi
See attached pic snapped from 1020 reference manual.
GPIO_AD_B0_04 has to work as JTAG_TDO and ENET_MDIO at the same time since 100pin 1021 does not have GPIO_EMC_40 & GPIO_SD_B0_02?
if so, what if signals transmit on JTAG and ENET at the same time?
OR does this means that i can only use swd to debug when enet used?
please help. thks.
Hello,
It is not possible to use different functionality, such as JTAG_TDO and ENET_MDIO
on the same pin simultaneously. So, when customers use SWD to debug, ENET_MDIO
cannot be used.
Have a great day,
Yuri
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Hi Yuri
thanks for help.
but i think what you say is not right. JTAG conflict with ENET_MDIO pin, but SWD doesn't.
so SWD can only be used for debug when ENET used.
am i right?
Hello,
Correct, the SWD signals (JTAG_TMS/TCK) do not conflict with Ethernet ones,
and may be used.
Regards,
Yuri.