Goodix GT911 User Manual

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1
GT911 Programming Guide
(Applicable to firmware of version 1040 or later)
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Goodix GT911 Specifications

General

Brand	Goodix
Model	GT911
Category	Computer Hardware
Language	English

Summary

GT911 Interface and Communication

Interface Pins and Communication

Details the pins used for interface and I2C communication parameters.

Communication Timings

Defines the timing sequences for data write and read operations.

Register Map and Data Access

Real-time Command Register

Lists real-time commands that can be written to the GT911.

Configuration Information Registers

Details read/write registers for configuring the GT911 device.

Coordinate Information Registers

Details registers related to coordinate data reporting.

HotKnot Status Registers

Provides status information for HotKnot operations.

Initialization and Configuration

Power-On Timing Sequence

Outlines the timing for powering on and initializing the GT911.

I2C Address Selection

Explains how to select the I2C address during power-on or reset.

Register Value Modification

Describes the process for modifying configuration registers and updating checksums.

Operation Modes and Features

Normal and Low Power Modes

Describes Normal mode and Green (Low Power) mode operation.

Gesture Mode Operation

Details how to enter and operate in Gesture mode.

Sleep Mode and Wakeup

Explains how to put the device into Sleep mode and how to wake it up.

HotKnot Modes

Describes the Approach, Receive, and Send modes for HotKnot.

Host System Interaction

Gesture and Sleep Mode Driver Handling

How to modify host drivers for Gesture and Sleep modes after screen-off.

Reading Gesture Coordinates

How to read gesture features and coordinates from registers.

Advanced Features and Requirements

HotKnot Firmware Download Time Limit

Specifies the time limit and I2C rate for HotKnot firmware transmission.

Revision History

Provides a log of document revisions.