FSA9280A USB Port Multimedia Switch Featuring Automatic Select and Accessory Detection Features Signals Switch Mechanism Accessory Detection USB USB Charging Audio VBAT Programmability ESD Package Description Audio, USB, UART, USB Charging Automatic Switching with Available Interrupt Headsets (Headphone/MIC/Remote) USB Data Port (SDP) UART Serial Link USB Chargers (Car-Kit, CDP, DCP) Factory-Mode TTY Converter FS and HS 2.0 Compliant Battery Charging 1.1 Compliant (Including Optional DCD) Integrated Power FET Over-Voltage Tolerance (OVT) 28V Over-Current Protection (OCP) 1.5A Over-Voltage Protection (OVP) 6.8V Left, Right, MIC, TTY 3 to 4.4V 2 IC 15kV IEC 61000-4-2 Air Gap 20-Lead UMLP (3 x 4 x 0.55mm, 0.5mm Pitch) Ordering Information The FSA9280A is a high-performance multimedia switch featuring automatic switching and accessory detection for the USB port. This switch allows sharing of a common USB port to pass audio, USB data / charging, as well as factory programmability. In addition, the FSA9280A integrates detection of accessories; such as headphones, headsets (MIC / button), car chargers, USB chargers, and UART data cables; with the ability to use a common USB connector. The FSA9280A can be programmed for manual or automatic switching of data paths based on accessory detected. FSA9280A includes an integrated 28V over-voltage and 1.5A over-current protected FET. Applications Mobile Phones & Portable Media Players Related Resources FSA9280A Evaluation Board Evaluation Board Users Guide For samples, questions or board requests; please contact [email protected] FSA9280AUMX FSA9280A Figure 1. Typical Application © 2008 Fairchild Semiconductor Corporation FSA9280A • Rev 1.0.9 www.fairchildsemi.com FSA9280A — USB Port Multimedia Switch, Featuring Automatic Select and Accessory Detection June 2012 Features ....................................................................................................................................................................................... 1 Description ................................................................................................................................................................................... 1 Applications .................................................................................................................................................................................. 1 Related Resources ....................................................................................................................................................................... 1 Table of Contents ......................................................................................................................................................................... 2 Block Diagram .............................................................................................................................................................................. 3 Pin Configuration .......................................................................................................................................................................... 3 Pin Descriptions ........................................................................................................................................................................... 4 1. Functionality .......................................................................................................................................................................... 5 1.1. Functional Overview ................................................................................................................................................... 5 2. Power-up & Reset ................................................................................................................................................................. 6 2.1. Reset .......................................................................................................................................................................... 6 2.1.1. Hardware Reset ............................................................................................................................................... 6 2.1.2. Software Reset ................................................................................................................................................ 6 2 3. I C ......................................................................................................................................................................................... 7 4. Configuration ......................................................................................................................................................................... 8 5. Detection ............................................................................................................................................................................... 8 5.1. USB Port Detection ................................................................................................................................................... 10 5.2. Audio Accessory Detection ....................................................................................................................................... 12 5.3. OCP and OVP Detection .......................................................................................................................................... 13 6. Processor Communication .................................................................................................................................................. 13 7. Switch Configuration ........................................................................................................................................................... 13 7.1. Manual Switching ...................................................................................................................................................... 14 8. Active Signal Performance .................................................................................................................................................. 15 8.1. USB Data .................................................................................................................................................................. 15 8.2. FS USB ..................................................................................................................................................................... 15 8.3. Audio ........................................................................................................................................................................ 15 9. Electrical Specifications ...................................................................................................................................................... 16 9.1. Absolute Maximum Ratings ...................................................................................................................................... 16 9.2. Recommended Operating Conditions ....................................................................................................................... 16 9.3. Switch Path DC Electrical Characteristics................................................................................................................. 16 9.4. Capacitance .............................................................................................................................................................. 18 9.5. Switch Path AC Electrical Characteristics ................................................................................................................. 18 2 9.6. I C Controller DC Characteristics.............................................................................................................................. 19 9.7. I2C AC Electrical Characteristics & Register Map ..................................................................................................... 19 9.8. Factory Modes .......................................................................................................................................................... 23 9.8.1. Factory-Mode Accessory Detection ............................................................................................................... 23 10. Reference Schematic .......................................................................................................................................................... 26 11. Layout Guidelines ............................................................................................................................................................... 27 11.1. PCB Layout Guidelines for High-Speed USB Signal Integrity .................................................................................. 27 11.2. Layout for GSM/TDMA Buzz Reduction ................................................................................................................... 27 11.3. VBUS_OUT Load Timing Requirements ........................................................................................................................ 27 11.4. Systems with Multiple USB Controllers .................................................................................................................... 28 Physical Dimensions .................................................................................................................................................................. 29 © 2011 Fairchild Semiconductor Corporation FSA9280A • Rev 1.0.9 www.fairchildsemi.com 2 FSA9280A — USB Port Multimedia Switch, Featuring Automatic Select and Accessory Detection Table of Contents FSA9280A — USB Port Multimedia Switch, Featuring Automatic Select and Accessory Detection Block Diagram Phone Power VBAT FSA9280A VBUS_OUT Charger IC CHG_DET Micro USB MIC Audio Codec FS USB or UART HS USB Interrupt I2C Baseband Processor Audio_R Audio_L ‐ Detection OCP,OVP 3:1 MUX and Charge Pump RxD TxD DP_HOST DM_HOST VBUS_IN DM_CON DP_CON ID_CON GND Charger Detect INTB I2C_SCL I2C_SDA Switch Control and I2C Slave VDDIO JIG BOOT Float Detect ADC ID Detect Figure 2. Block Diagram ID_CON DP_CON DM_CON VBUS_IN Pin Configuration 20 19 18 17 Audio_R 1 16 CHG_DET Audio_L 2 15 VBUS_OUT MIC 3 14 I2C_SCL GND Exposed DAP DP_HOST 4 13 I2C_SDA DM_HOST 5 12 INTB RxD 6 11 VBAT TxD BOOT 9 10 JIG 8 VDDIO 7 Figure 3. Pin Assignments (Top View) © 2011 Fairchild Semiconductor Corporation FSA9280A • Rev 1.0.9 www.fairchildsemi.com 3 0.10 C 3.00 2X A 2.80 B 1.70 PIN1 IDENT 3.80 4.00 2.70 0.60 20X 0.10 C 2X TOP VIEW 0.55 MAX 0.30 20X A 0.10 C RECOMMENDED LAND PATTERN (0.15) 0.05 0.00 0.08 C 0.50 C SIDE VIEW SEATING PLANE NOTES: 1.70 1.60 A. PACKAGE CONFORMS TO JEDEC MO-220 EXCEPT WHERE NOTED. 10 7 B. DIMENSIONS ARE IN MILLIMETERS. 6 11 C. DIMENSIONS AND TOLERANCES PER ASME Y14.5M, 1994. D. DRAWING FILENAME: MKT-UMLP20Arev1. 2.70 2.60 E. LAND PATTERN RECOMMENDATION IS BASED ON FSC DESIGN ONLY 0.25 20X 0.15 16 1 PIN 1 IDENT 20 17 0.50 0.10 0.05 C A B C 0.45 20X 0.35 BOTTOM VIEW Figure 30. 20-Lead Ultrathin Molded Leadless Package (UMLP), 3 x 4 x 0.55mm, 0.5mm Pitch Package drawings are provided as a service to customers considering Fairchild components. Drawings may change in any manner without notice. Please note the revision and/or date on the drawing and contact a Fairchild Semiconductor representative to verify or obtain the most recent revision. Package specifications do not expand the terms of Fairchild’s worldwide terms and conditions, specifically the warranty therein, which covers Fairchild products. Always visit Fairchild Semiconductor’s online packaging area for the most recent package drawings: http://www.fairchildsemi.com/packaging/. Please visit Fairchild Semiconductor’s online packaging area for the most recent tape and reel specifications: http://www.fairchildsemi.com/packaging/3x4UMLP20_TNR.pdf. Part Number Operating Temperature Range Top Mark Package -40 to +85°C 9280A 20-Lead Ultrathin Molded Leadless Package (UMLP), 3 x 4 x 0.55mm, 0.5 Pitch FSA9280AUMX © 2011 Fairchild Semiconductor Corporation FSA9280A • Rev 1.0.9 www.fairchildsemi.com 29 FSA9280A — USB Port Multimedia Switch, Featuring Automatic Select and Accessory Detection Physical Dimensions FSA9280A — USB Port Multimedia Switch, Featuring Automatic Select and Accessory Detection 30 www.fairchildsemi.com © 2011 Fairchild Semiconductor Corporation FSA9280A • Rev 1.0.9