Antminer S17e hash board U1 and U2 chip working process

Antminer S17e hash board has 2 level conversion chips located at U1 and U2. U1 is the level conversion chip of the CI signal, and U2 is the level conversion chip of the RI signal, both of which are used to convert the 3.3V input from the control board through the IO interface 1.8V output. Only when the level conversion chip works normally, the control board can recognize the hash board and communicate normally.

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