OTT2001A IIC协议指导(芯片资料).pdf-资料库

OOTTTT22000011AA TToouucchh AApppplliiccaattiioonn NNoottee II22CC PPrroottooccooll GGuuiiddee Preliminary Aug. 20, 2013

Solution Depot Limited I2C Protocol Guide Table of Content Introduction............................................................................................................................................3 I2C Interface Protocol............................................................................................................................4 2.1 2.2 2.3 2.4 Timing Characteristic ................................................................................................................4 I2C Buffer and Data Format......................................................................................................5 Function Description .................................................................................................................6 Operation Definition..................................................................................................................7 I2C R/W Timing Table .................................................................................................7 Touch event....................................................................................................................8 Setting TP On/Off ..........................................................................................................9 2.4.1 2.4.2 2.4.3 1 2 本资料问新励科技专有之财产，非经书面许可，不准透露或使用本数据，亦不准复印、复制或转变为任何其它型式使用。 The information contained herein is the exclusive property of Solution Depot Limited. and shall not be distributed, reproduced, or disclosed in whole or in part without prior written permission of Solution Depot Limited. Page 2 of 9

Solution Depot Limited I2C Protocol Guide 1 Introduction The OTT2001A, a 208 channels capacitive touch driver LSI, is designed for up to7” passive matrix touch module. When users touch module by finger, the module can send coordinates of point at the contact point to host. The finger position information is sent to host by I2C bus which is determined by host through INT line. The purpose of this guide is to introduce the I2C protocol in detail. 本资料问新励科技专有之财产，非经书面许可，不准透露或使用本数据，亦不准复印、复制或转变为任何其它型式使用。 The information contained herein is the exclusive property of Solution Depot Limited. and shall not be distributed, reproduced, or disclosed in whole or in part without prior written permission of Solution Depot Limited. Page 3 of 9

Solution Depot Limited I2C Protocol Guide 2 I2C Interface Protocol Figure shows the I2C byte format. Each transmission has to start with a start (S) or repeated start (Sr) bit and end with a stop (P) or repeated start bit. Each byte has to be followed by and acknowledge (ACK) bit. The byte data is sent with MSB first. 2.1 Timing Characteristic Figure 2 I2C byte format Figure 2.1 Definition of timing Table 1. Characteristics Parameter Symbol Min. Typ. Max. Unit Conditions Working Frequency Fclk INT Low Time I2C Clock Low I2C Clock High TINTL TCKL TCKH I2C Data rising time I2C Data falling time Tr Tf I2C Data hold time TDatHd - - 2.5 2.5 - - 0 I2C Data setup time TDatSu 100 I2C Start Condition hold time I2C Start Condition setup time TStaHd 200 TStaSu 600 - 2 - - - - - - - - - - - 300 200 Khz VDD=3.3V,TA=25℃ uS VDD=3.3V,TA=25℃ uS VDD=3.3V,TA=25℃ uS VDD=3.3V,TA=25℃ nS VDD=3.3V,TA=25℃ nS VDD=3.3V,TA=25℃ nS VDD=3.3V,TA=25℃ nS VDD=3.3V,TA=25℃ 300 - - - - nS VDD=3.3V,TA=25℃ nS VDD=3.3V,TA=25℃ 本资料问新励科技专有之财产，非经书面许可，不准透露或使用本数据，亦不准复印、复制或转变为任何其它型式使用。 The information contained herein is the exclusive property of Solution Depot Limited. and shall not be distributed, reproduced, or disclosed in whole or in part without prior written permission of Solution Depot Limited. Page 4 of 9

Solution Depot Limited I2C Protocol Guide I2C Stop Condition setup time TStpSu 600 I2C Bus free time TBusFree 2.5 - - - - nS VDD=3.3V,TA=25℃ uS VDD=3.3V,TA=25℃ 2.2 I2C Buffer and Data Format Touch panel is used as I2C Slave Device，I2C Salve address is 0x59。 I2C Buffer Address Function of this I2C Buffer Status 00H 01H 02H 03H 04H 05H 06H 07H 08H 09H 0AH 0BH 0CH 0DH 0EH 0FH 10H 11H 12H 13H 14H 15H 16H 17H 18H 19H 1AH 1BH GestureID TouchPoint1XH TouchPoint1XL TouchPoint1YH TouchPoint1YL TouchPoint2XH TouchPoint2XL TouchPoint2YH TouchPoint2YL Resolution-XH Resolution-XL Resolution-YH Resolution-YL Sensor Operation Control Reserve Reserve TouchPoint3XH TouchPoint3XL TouchPoint3YH TouchPoint3YL TouchPoint4XH TouchPoint4XL TouchPoint4YH TouchPoint4YL TouchPoint5XH TouchPoint5XL TouchPoint5YH TouchPoint5YL R R R R R R R R R R R R R R R R R R R R R R R R R R R R 本资料问新励科技专有之财产，非经书面许可，不准透露或使用本数据，亦不准复印、复制或转变为任何其它型式使用。 The information contained herein is the exclusive property of Solution Depot Limited. and shall not be distributed, reproduced, or disclosed in whole or in part without prior written permission of Solution Depot Limited. Page 5 of 9

Solution Depot Limited I2C Protocol Guide 2.3 Function Description I2C Buffer Address Bit Function Description Status 00H 7…0 Gesture ID 0 1 2 3 4 0x00: finger leave 1：coordinator (X1，Y1) valid 0：coordinator (X1，Y1) invalid 1：coordinator (X2，Y2) valid 0：coordinator (X2，Y2) invalid 1：coordinator (X3，Y3) valid 0：coordinator (X3，Y3) invalid 1：coordinator (X4，Y4) valid 0：coordinator (X4，Y4) invalid 1：coordinator (X5，Y5) valid 0：coordinator (X5，Y5) invalid 7..5 Reserve 01H 02H 03H 04H 05H 06H 07H 08H 09H 0AH 0BH 0CH X1[15:8] X1[7:0] Y1[15:8] Y1[7:0] X2[15:8] X2[7:0] Y2[15:8] Y2[7:0] Resolution1 Resolution2 Resolution3 Resolution4 Bit Power mode control register 0DH 7 Sensor On/Off Control 0:Disable Sensor 1:Enable Sensor(Default) 6..0 Reserve 0EH 0FH 10H 11H 12H 13H Reserve Reserve X3[15:8] X3[7:0] Y3[15:8] Y3[7:0] R R R R R R R R R R R R R R R R R R R R/W R R R R R R 本资料问新励科技专有之财产，非经书面许可，不准透露或使用本数据，亦不准复印、复制或转变为任何其它型式使用。 The information contained herein is the exclusive property of Solution Depot Limited. and shall not be distributed, reproduced, or disclosed in whole or in part without prior written permission of Solution Depot Limited. Page 6 of 9

Solution Depot Limited I2C Protocol Guide 14H 15H 16H 17H 18H 19H 1AH 1BH X4[15:8] X4[7:0] Y4[15:8] Y4[7:0] X5[15:8] X5[7:0] Y5[15:8] Y5[7:0] R R R R R R R R 2.4 Operation Definition 2.4.1 I2C R/W Timing Table 2.4.1.1 Write a byte to I2C Buffer Register A 6 A 5 A 4 A 3 A 2 A 1 A 0 XXXXXXXX XXXXXXXX W ( 0 ) S T A R T S T O P 2.4.1.2 Read a byte from I2C Buffer Register I2C INT 1 0 I2C Device Address I2C Buffer Address I2C Device Address A 6 A 5 A 4 A 3 A 2 A 1 A 0 R ( 1 ) A 6 A 5 A 4 A 3 A 2 A 1 A 0 XXXXXXXX W ( 0 ) S T A R T S T A R T Register XXXXXXXX S T O P NOTE: Before the resend a START signal ,do not send a STOP signal, otherwise the I2C Buffer Address changes back into 0x00. 2.4.2 Touch event 2.4.2.1 First time finger touch on the panel, INT will active a falling edge signal that there is a touch event. 本资料问新励科技专有之财产，非经书面许可，不准透露或使用本数据，亦不准复印、复制或转变为任何其它型式使用。 The information contained herein is the exclusive property of Solution Depot Limited. and shall not be distributed, reproduced, or disclosed in whole or in part without prior written permission of Solution Depot Limited. Page 7 of 9

Solution Depot Limited I2C Protocol Guide 2.4.2.2 Finger hold on touch panel, INT will active a falling edge signal each detect frame 2.4.2.3 Finger leave from the touch panel, INT will active a falling edge signal to indicate finger leave from touch panel, and the touch sensor will respond(0,0) coordinate to I2C master 2.4.3 Setting TP On/Off Write a byte 0x80/0x00 to I2C buffer address 0DH to set TP On/Off. 本资料问新励科技专有之财产，非经书面许可，不准透露或使用本数据，亦不准复印、复制或转变为任何其它型式使用。 The information contained herein is the exclusive property of Solution Depot Limited. and shall not be distributed, reproduced, or disclosed in whole or in part without prior written permission of Solution Depot Limited. Page 8 of 9

资料库

OTT2001A IIC协议指导(芯片资料).pdf

相关推荐

最新资料