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HI51's avatar
HI51
Icon for New Contributor rankNew Contributor
5 months ago

Agilex5のJTAGコンフィギュレーションモードで起動した場合のSDM_IO0~16の状態について

Agilex5をJTAGコンフィギュレーションモードで起動した場合のSDM_IO0~16の状態について教えてください。 「Device Configuration User Guide: Agilex™ 5 FPGAs and SoCs」の「3.2.6.1. Programming Serial Flash Devices using the AS Interface」において、「AS_CLK...
FakhrulA_altera's avatar
FakhrulA_altera
Icon for Regular Contributor rankRegular Contributor
5 months ago

Hi HI51,


In JTAG configuration mode, SDM_IO0–16 are not active. The AS interface pins (AS_CLK, AS_nRST, AS_DATA[3:0], AS_nCSO[3:0]) go to tristate with internal weak pull-ups to VCCIO_SDM. Other SDM_IO pins are also tristated with weak pull-ups. No external pull-downs are required.


Regards,

Fakhrul