Texas Instruments 343S0464/343S0487 Touch Screen Controller for iphone 3GS Circuit Analysis of Column Driver, ADC, Power Management, and I/O Blocks For questions, comments, or more information about this report, or for any additional technical needs concerning semiconductor and electronics technology, please call Sales at Chipworks. 3685 Richmond Road, Suite 500, Ottawa, ON K2H 5B7 Canada Tel: 613.829.0414 Fax: 613.829.0515 www.chipworks.com
Texas Instruments 343S0464/343S0487 Touch Screen Controller Some of the information in this report may be covered by patents, mask and/or copyright protection. This report should not be taken as an inducement to infringe on these rights. 2010 Chipworks Inc. This report is provided exclusively for the use of the purchasing organization. It can be freely copied and distributed within the purchasing organization, conditional upon the accompanying Chipworks accreditation remaining attached. Distribution of the entire report outside of the purchasing organization is strictly forbidden. The use of portions of the document for the support of the purchasing organization's corporate interest (e.g., licensing or marketing activities) is permitted, as defined by the fair use provisions of the copyright act. Accreditation to Chipworks must be attached to any portion of the reproduced information. CAR-1001-811 14156DYJG Revision 1.0 Published: April 22, 2010
Texas Instruments 343S0464/343S0487 Touch Screen Controller Table of Contents Overview Schematics Cell Library Signal Cross-Reference List About Chipworks
Texas Instruments 343S0464/343S0487 Touch Screen Controller Overview List of Figures...Page 1 List of Schematics...Page 1 Introduction...Page 8 Brief Design Overview...Page 9 Component Descriptions...Page 14 Device Summary Sheet...Page 18
Texas Instruments 343S0464/343S0487 Touch Screen Controller Page 1 List of Figures To view, please click on the appropriate bookmark in the panel on the left. 0.1.1 Downstream Product Photographs Apple iphone 3GS 0.1.2 Downstream Product Photographs Apple Magic Mouse 0.1.3 Downstream Product Photographs Apple 32G ipod Touch 0.1.4 Package Markings 0.1.5 Package X-Ray 0.1.6 Die Markings 0.2.1 Die Photograph Top Metal 0.2.2 Die Photograph Metal 1 0.2.3 Annotated Die Photograph Metal 1 0.2.4 Die Architecture Metal 1 0.3.1 Die Utilization Table List of Schematics 1.0.0 Top Level Diagram 2.0.0 Receivers 2.1.0 Preamplifier 2.1.1 Amplifier 1 2.1.1.1 Bias Control 2.1.1.2 Miller Cap 1 2.1.1.3 Miller Cap 2 2.1.2 Amplifier 2 2.1.2.1 Bias Control 2.1.3 Amplifier 3 2.1.4 Feedback Cap 2.1.4.1 Capacitor 1 2.1.4.2 Capacitor 2 2.1.4.3 Capacitor 3 2.1.4.4 Capacitor 4 2.1.4.5 Capacitor 5 2.1.4.6 Capacitor 6
Texas Instruments 343S0464/343S0487 Touch Screen Controller Page 2 2.1.5 Feedback R 2.1.6 Bias Circuit 1 2.1.7 Bias Circuit 2 2.1.8 Bias Circuit 3 2.1.9 Reference Voltages 2.1.10 Programmable Cap 2.2.0 SAR ADC 2.2.1 Capacitive DAC 2.2.1.1 Switch 1 2.2.1.2 Switch 2 2.2.1.3 Switch 3 2.2.2 Comparator 1 2.2.3 Comparator 2 2.2.4 Comparator 3 2.2.5 Startup VR 2.2.5.1 Switch 1 2.2.5.2 Switch 2 2.2.5.3 Switch 3 2.2.6 Reference Currents 2.2.7 Reference Voltages 2.2.7.1 Voltage Buffer 1 2.2.7.2 Voltage Buffer 2 2.2.8 Unused Components 2.2.8.1 Unused Switch 2.3.0 Signal Monitor 2.3.1 Preamplifier 2.3.1.1 Change Detector 2.3.1.2 Amplifier 2.3.1.3 Switch 2.3.1.4 V/I Converter 2.3.1.5 Voltage Chopper 2.3.1.6 Decoder 2.3.1.7 Amplifier
Texas Instruments 343S0464/343S0487 Touch Screen Controller Page 3 2.3.1.8 Programmable Cap 2.3.1.9 Capacitor Array 2.3.1.10 Controlled Cap 2.3.1.11 Decoder 2.3.2 Multi Input Amplifier 2.3.2.1 Amplifier 2.3.2.2 Switches 2.3.2.3 LPF Amplifier 2.3.2.4 Amplifier 1 2.3.2.5 Bias Control 2.3.2.6 Amplifier 2 2.3.3 Bias Circuit 2.3.3.1 Reference Circuit 2.3.3.2 ESD Circuit 2.3.4 Unused Circuits 2.3.4.1 Unused Circuit 1 2.3.4.2 Unused Circuit 2 2.3.4.3 Unused Circuit 3 2.3.4.4 Unused Circuit 4 2.3.4.5 Unused Circuit 5 2.3.4.6 Decoder 3.0.0 Column Drivers 3.0.1 Level Shifter 3.1.0 Column Driver 3.1.1 Signal Driver 3.1.2 Bias Circuit 3.2.0 Control Circuits 3.2.1 Control Signals 3.2.2 Reference Currents 3.2.3 Voltage Clamp 3.2.3.1 Signal Latch 3.3.0 Ramp Generator
Texas Instruments 343S0464/343S0487 Touch Screen Controller Page 4 3.4.0 Voltage Distributor 3.4.1 4-Input MUX 3.4.2 3-Input MUX 3.5.0 Voltage Amplifiers 3.5.1 Amplifier 1 3.5.1.1 Dummy Cells 3.5.2 Amplifier 2 3.5.2.1 Dummy Cells 3.5.3 Amplifier 3 3.5.3.1 Dummy Cells 4.0.0 Reference Generators 4.1.0 AC Reference Generator 4.1.1 Control Circuit 1 4.1.2 Decoder 1 4.1.3 Decoder 2 4.1.4 Decoder 3 4.1.5 9-bit Binary Current Steering DAC 4.1.5.1 Active Current Source 4.1.5.2 Inactive Current Source 4.1.5.3 Bias Voltage Generator 4.1.6 Decoder 3 4.1.6.1 Buffer 17 4.1.6.2 Buffer 60 4.1.6.3 Buffer 76S1 4.1.7 Decoupling Caps 4.2.0 DC Reference Generation 4.2.1 Logic 4.2.2 Bias Generator 4.2.2.1 Amplifier 4.2.2.2 Unused 1 4.2.2.3 Unused 2 4.2.2.4 Unused 3
Texas Instruments 343S0464/343S0487 Touch Screen Controller Page 5 4.2.2.5 Decoder 1 4.2.3 Amplifier 1 4.2.3.1 Dummy Cells 4.2.4 Amplifier 2 4.2.4.1 Dummy Cells 5.0.0 Power Management 5.1.0 Startup 5.2.0 Main Bias Generator 5.3.0 Bandgap Reference 5.3.1 Bandgap Amplifier 5.4.0 Bias Generator Amplifier 5.5.0 Controlled Current Mirror 5.5.1 4 Bit Controlled Bias 5.5.2 8 Bit Controlled Bias 5.5.3 32 Bit Controlled Bias 5.5.3.1 32 Bit Mirror Control 5.5.3.2 32 Bit Mirror Leg 5.6.0 Resistor Divider Controller 5.7.0 Resistor Divider 1 5.8.0 Resistor Divider 2 5.9.0 Resistor Divider 3 5.10.0 Control Bias Interface 5.11.0 Resistor Divider Control Interface 5.12.0 Gain Stage 5.12.1 Buffer 5.12.2 Gain Amplifier 5.13.0 Comparator 3 5.14.0 Shutdown Control Interface 5.15.0 Shutdown Signal Generator 5.16.0 Miscellaneous Control Interface 5.17.0 BGVREF Monitor Control Interface 5.18.0 BGVREF Monitor
Texas Instruments 343S0464/343S0487 Touch Screen Controller Page 6 5.19.0 Unused 5.20.0 Miscellaneous Control Interface 3 5.21.0 ESD Protection 1 5.22.0 ESD Protection 2 5.22.1 ESD Reference Generator 5.22.2 Logic Supply Control 5.23.0 Variable Resistor Control Interface 5.24.0 Variable Resistor 1 5.25.0 Variable Resistor 2 5.26.0 Variable Resistor 3 5.27.0 Integrator Amplifier 1 5.28.0 Integrator Amplifier 2 5.29.0 Macro Data Output Driver 5.29.1 Reference Generator 5.29.2 VP Supply Monitor 5.29.2.1 Comparator 5.29.3 Non-overlapping Clock Generator 5.29.4 Level Shifter 5.29.5 Level Shift 2 5.29.6 Output Driver 5.30.0 Integrator Amplifier 3 5.31.0 Comparator 2 5.32.0 Supply Monitor 5.32.1 Comparator 5.32.2 VBE Reference 5.32.3 Comparator Bias 5.33.0 Clock Divider 5.34.0 Clock Divider 2 5.35.0 Miscellaneous Control Interface 2 5.36.0 Clock Delay 5.37.0 9 Bit DAC 5.37.1 DAC Address Decoder 5.37.1.1 DAC Address Buffer 1
Texas Instruments 343S0464/343S0487 Touch Screen Controller Page 7 5.37.1.2 DAC Address Buffer 2 5.37.1.3 DAC Address Buffer 3 5.37.1.4 DAC Address Buffer 4 5.37.1.5 DAC Address Buffer 5 5.37.1.6 DAC Address Buffer 6 5.37.1.7 DAC Address Buffer 7 5.37.1.8 DAC Address Buffer 8 5.37.2 Level Shifter 5.37.3 DAC Voltage Bias Generator 5.37.4 EN Signal Delay 5.37.5 DAC Current Sources 5.37.5.1 Level Shifter 5.37.5.2 Current Source 5.37.7 Differential Latch 5.37.8 Buffer with Differential Input 1 5.37.9 Buffer with Differential Input 2 6.0.0 Macro Analog Support 6.1.0 Output Driver Bank 6.1.1 Output Driver 1 6.1.2 Output Driver 2 6.1.3 Output Driver 3 6.1.4 Output Driver 4 6.2.0 Variable Load 6.3.0 Unused Variable Resistor Bank 6.4.0 Unused Supply Pad 6.5.0 Ring Oscillator 1 6.6.0 Ring Oscillator 2 6.7.0 Ring Oscillator 3 7.0.0 Pad I/O Buffers 7.1.0 Pad 8 I/O Buffer 7.2.0 Pad 9 I/O Buffer 7.3.0 Pad 12 I/O Buffer
Texas Instruments 343S0464/343S0487 Touch Screen Controller About Chipworks Chipworks is the recognized leader in reverse engineering and patent infringement analysis of semiconductors and electronic systems. The company s ability to analyze the circuitry and physical composition of these systems makes them a key partner in the success of the world s largest semiconductor and microelectronics companies. Intellectual property groups and their legal counsel trust Chipworks for success in patent licensing and litigation earning hundreds of millions of dollars in patent licenses, and saving as much in royalty payments. Research & Development and Product Management rely on Chipworks for success in new product design and launch, saving hundreds of millions of dollars in design, and earning even more through superior product design and faster launches. Contact Chipworks To find out more information on this report, or any other reports in our library, please contact Chipworks at: Chipworks 3685 Richmond Rd. Suite 500 Ottawa, Ontario K2H 5B7 Canada T: 1.613.829.0414 F: 1.613.829.0515 Web site: www.chipworks.com Email: info@chipworks.com Please send any feedback to feedback@chipworks.com