GOODIX CONFIDENTIAL
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Timing sequence of setting address to 0xBA/0xBB:
4.3 Send Configuration after Power-on
During the power-on process, after host converts its INT to input floating, it is required to wait for 50ms before
sending configuration information.
4.4 Register Value Modification
GT911 supports Register Value Modification. When modifying any register in the configuration area (0x8047
－
0x80FE) based on the timing sequence as specified in section 2, it is required to update Config_Chksum (0x80FF)
and eventually set Config_Fresh (0x8100) to 1. Otherwise, the modification is invalid; when modifying any
registers outside configuration area, it is unnecessary to modify Config_Chksum and Config_Fresh.
5. Coordinates Reading
The host reads coordinates by periodic polling or interrupt request.
When periodic polling is adopted, the host reads coordinates through the following steps:
1. Based on the time sequence indicated in section 2, the host first reads register 0x814E. If the data in buffer is
