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GT9113 Schematic ( PDF Datasheet ) - GOODIX

Teilenummer GT9113
Beschreibung Window 8 capacitor touch chip
Hersteller GOODIX
Logo GOODIX Logo 




Gesamt 30 Seiten
GT9113 Datasheet, Funktion
Window 8 capacitor touch chip GT9113
GT9113
Window 8 capacitor touch chip
Rev.042013-12-30
====== Disclaimer======
Application information and similar contents concerning the device in this publication are only intended for you
and they may be substituted by updated information. It is your responsibility to ensure its application complies
with technical specifications. GOODIX makes no representation or guarantee for this information, either express
or implied, written or verbal, statutory or in any other manner, including but not limited to representation or
guarantee for their application status, quality, performance or suitability for special purpose. GOODIX shall
assume no responsibility for this information and relevant subsequences arising from use of such information.
Without written approval GOODIX, it is prohibited to use GOODIX product as critical parts in any life support
system. With GOODIX intellectual property protection, it is prohibited to transfer any license in any disguised
manner or any other manner.
Goodix
Confidential information
Without permission Can not reprinted
1






GT9113 Datasheet, Funktion
Window 8 capacitor touch chip GT9113
29
30
31
32
33
34
35
36
37
38~79
80
81~88
Sensor_OPT2
I2C_SDA
I2C_SCL
NC
SYNC
VDDIO
/ARM_RST
Wake
/RSTB
DRV41~DRV0
AGND
SEN0~SEN7
Module ID port
(Optional)
I2C data signal
I2C clock signal
NC
GT9113 interrupted signal
output pin
GPIO level control
ARM Reset control pin
Wake GT9113 control pin
GT9113 reset pin
Drive signal output
Analog power supply
ground
Touch analog signal input
External pull down required
GTM802 communication
interface
GTM802 communication
interface
To 2.2uF filter capacitor
Suspend: 1.8V
Connect AVDD: AVDD
External 10K pull up required,
lower down to reset
4.2. GTM802 pin definition
SYN C
SCL
SDA
NC
NC
LDO
VDD
GN D
1
2
3
4
5
6
7
8
G TM 802
Q F N 5×5_3 2 L_0.5P
E P -G N D
2 4 IC E _C K
2 3 IC E _D A T
2 2 G TC K _A DJ
2 1 I2C1_S C L
2 0 I2C1_S D A
19 N C
18 N C
17 N C
Pin No.
1
2
3
4
Name
SYNC
SCL
SDA
NC
Goodix
Confidential information
Without permission Can not reprinted
Function description
GTM802 interrupted wake
pin
I2C clock signal
I2Cdata signal
NC
Remarks
GT9113 uses the pin to wake
GTM802
I2C scheme master control
communication interface
I2C scheme master control
communication interface
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6 Page









GT9113 pdf, datenblatt
Window 8 capacitor touch chip GT9113
The operating procedures for capturing HID descriptor are similar to those for capturing report
descriptor. After sending device address information and read-write bit information, master device
receives ACK from slave device and sends a 16-bit HID descriptor address. After slave device replies
with ACK, master device begins to capture data; master device replies with an ACK to slave device for
every BYTE and replies with NACK for the last BYTE. Finally, it sends end mark.
d) R/W operating procedures and feature message
When slave device needs to capture data from master device, it first pulls INT trigger interruption. After
master device receives interruption, it sends device address information and read/write bit; after slave
device replies with ACK, master device begins to capture data; master device replies with an ACK to
slave device for every BYTE and replies with NACK for the last BYTE. Finally, it sends end mark.
Now, slave device releases INT pin.
When sending data, master device first sends device address information and read/write bit. After slave
device replies with ACK, master device begins to send data; master device waits for slave device to
reply with an ACK for every BYTE. After master device sends the last BYTE and receives ACK from
slave device, master device sends end mark to complete the sending process.
Feature message is a two-way message sent between master device and slave. For example, it is used for
master device to change the status of slave device, such as Reset.
6.2. USB communication
When the format for USB to report data is ID + coordinate data, ID is 1; When the format for USB
to report data is ID + coordinate point, ID is 2.
GT9113 USB is transmitted to MCU in data packet format compliant with WIN8 protocol. GT9113 supports a
maximum of 10 fingers. When the number of touch fingers is less than or equal to 6, only one data packet (first 64
bytes) is transmitted at a time; When the number of touch fingers is greater than 6, two data packets (128 bytes) are
transmitted. Specific format for data packet is as shown below:
0 ReportID
1 valid_point_flag
2 track id
3 point 1 x coordinate (low byte)
4 point 1 x coordinate (high byte)
5 point 1 y coordinate (low byte)
6 point 1 y coordinate (high byte)
7 point 1 rect_x_size(low byte)
8 point 1 rect_x_size(high byte)
9 point 1 rect_y_size(low byte)
10 point 1 rect_y_size(high byte)
11 valid_point_flag
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