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PDF GT928 Data sheet ( Hoja de datos )
| Número de pieza | GT928 | |
| Descripción | 10-point SOC Touch Solution for Tablet | |
| Fabricantes | Goodix | |
| Logotipo |  |
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GT928: 10-point SOC touch Solution for tablet
GT928
10-point SOC Touch Solution for Tablet
Rev. 02——2012.12.26
====== Announcement of exemption======
The application information and other similar content in this publication are only provided for you
and they may be substituted by any updated information. Your responsibility is to ensure
application in conformity with technological specifications. GOODIX will not make any statement or
guarantee, expressly or implied, in writing or orally, to such information, including but not limited to,
any statement or warranty, legally or otherwise, to their use, quality, performance, marketability or
suitability to special purpose. GOODIX shall not be liable for any outcome arising form such
information or use of such information. Any product of GOODIX shall not be used as a vital
component for life maintaining system without written consent from GOODIX. Under protection of
GOODIX intellectual property rights, any license shall not be transferred secretly or otherwise.
Copyright reserved by GOODIX
1
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GT928: 10-point SOC touch Solution for tablet
4. Pin Definition
SEN7
SEN8
SEN9
SEN10
SEN11
SEN12
SEN13
SEN14
SEN15
SEN16
SEN17
SEN18
SEN19
SEN20
SEN21
SEN22
SEN23
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
GT928
QFN8×8_68L_0.4P
D32×S24
EP-GND
51 DRV9
50 DRV10
49 DRV11
48 DRV12
47 DRV13
46 DRV14
45 DRV15
44 DRV16
43 DRV17
42 DRV18
41 DRV19
40 DRV20
39 DRV21
38 DRV22
37 DRV23
36 DRV24
35 DRV25
Pin No.
1~17
18
19
20
21
22
23
24
25
26
27
28
29~60
61
62~68
Name
SENS7~SENS23
AVDD28
AVDD18
DVDD12
DGND
INT
Sensor_OPT1
Sensor_OPT2
I2C_SDA
I2C_SCL
VDDIO
/RSTB
DRV31~DRV0
AGND
SENS0~SENS6
Description
Sensing channels
Analog VDD 2.8V
Analog VDD 1.8V
Digital VDD 1.2V
Digital ground
Interrupt
Sensor option pin1
Sensor option pin2
I2C_data
I2C_clock
VDD of GPIO
Reset
Driving channels
Analog ground
Sensing channels
Remark
2.2uF to GND
2.2uF to GND
2.2uF to GND
External pull-down
res.
External pull-up res.
External pull-up res.
2.2uF to GND
1、floating:1.8V
2、to AVDD:AVDD
external pull-up low
valid
Copyright reserved by GOODIX
5
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GT928: 10-point SOC touch Solution for tablet
read mode. Master shall send out ACK after every byte reading successfully but
NACK after the last one. Then sends stop signal to finish the communication.
6.2. Register Information of GT928
a) Real Time Order
(Write Only)
Addr
Name
0x8040
Command
0x8041
0x8042
Reserved
Proximity_En
bit7 bit6 bit5 bit4 bit3 bit2 bit1 bit0
0：read coordinate 1：read diff data or raw data 2：software
reset3:baseline update 4: baseline calibration 5: screen off
3&4 are still internal test
Reserved
Switch of Proximity
b) Configuration Information
（R/W）
寄存器
Config Data
bit7
bit6 bit5 bit4 bit3 bit2 bit1 bit0
0x8047
0x8048
0x8049
0x804A
0x804B
0x804C
Config_
Version
X Output Max
(Low Byte)
X Output Max
(High Byte)
Y Output Max
(Low Byte)
Y Output Max
(High Byte)
Touch Number
Reserved
0x804D
Module_
Switch1
Reserved
Version of the configuration
resolution of X axis
resolution of Y axis
Stretch_rank
Touch No.：1~10
INT trigger method
00 ： rising edge
trigger
X2Y
Sito
01 ： falling edge
trigger
02 ： low level
enquiry
03 ： high level
enquiry
0x804E
Module_
switch2
Reserved
Touch
_key
0x804F
0x8050
0x8051
0x8052
Shake_Count
Filter
Large_Touch
Noise_
Reduction
Reserved
First_Filter
Reserved
Finger shake count
Normal_Filter (filtering value of original
window, coefficiency is 1)
Number of touch in large area
coordinate
Value of noise elimination (coefficient is 1)
Copyright reserved by GOODIX
11
11 Page | ||
| Páginas | Total 25 Páginas | |
| PDF Descargar | [ Datasheet GT928.PDF ] | |
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