GOODIX CONFIDENTIAL
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Whether host outputs high or low after INT T2 depends on which I2C slave device address the host employs to
communicate with GT911. If the address is 0x28/0x29, host outputs high; if the address is 0xBA/0xBB, host outputs
low.
Timing for host resetting GT911:
4.2 I
2
C address selection during power-on or reset process
GT911 supports two I
2
C slave device addresses: 0xBA/0xBB and 0x28/0x29. Host needs to select the I
2
C
slave device address during power-on initialization or Reset process via Reset pin. Host can select the I
2
C address
by controlling Reset and INT timing sequence. Diagram below provides details:
Timing sequence for setting address to 0x28/0x29:
