FSA806 — USB2.0 High-Speed (480Mbps), UART, and Audio Switch with Negative Signal Capability Features Description The FSA806 is a 3:1 USB accessory switch that enables USB data, stereo and mono audio, and UART data to share a common connector port. Two ports are designed for high-speed USB 2.0 signaling, while also capable of full speed USB and UART communication. The architecture is designed to allow audio signals to swing below ground so a common USB and headphone jack can be used for personal media players and portable peripheral devices. 3:1 Switch Handles: - Audio Headsets UART Up to Two High- and Low-Speed USB Data Negative-Swing-Capable Audio Channel Built-in Termination Resistors for Audio Pop Reduction Simple Switch Control Using Two Select Pins The FSA806 meets both USB Rev. 2.0 and micro-USB specifications. Applications Cell Phones, MP3 Players, PDAs Ordering Information Part Number Operating Temperature Range Top Mark Package FSA806UMX -40 to +85°C KN 12-Lead Quad, 1.8 x 1.8mm Ultrathin Molded Leadless Package (UMLP) VCC FSA806 R_HOS L_HOS DP_HOST DM_HOST R 3:1 MUX and Charge Pump DM_CO DP_HOST GN DM_HOS SEL[0 SEL[1 DP_CO Switc Contro Figure 1. Functional Block Diagram © 2010 Fairchild Semiconductor Corporation FSA806 • Rev. 1.0.1 www.fairchildsemi.com FSA806 — USB2.0 High-Speed (480Mbps), UART, and Audio Switch with Negative Signal Capability July 2012 Baseband Processor Audio Codec VCC FSA806 R_HOST mini/micro US L_HOST VBU R HS USB / FS USB HS USB / FS USB DP_HOST2 DM_HOST2 3:1 MUX and Charge Pump DP_HOST1 DM_HOST1 SEL[0] SEL[1] ID DP_CON DM_CON GND Switch Control Figure 2. Typical Application Functional Description The FSA806 USB2.0 accessory switch is designed to consolidate wired accessories for portable devices, such as cellular telephones and portable audio players. The benefits of consolidation include reduced space requirements from a reduction of connectors and their size. The micro-USB connector, for example, reduces connector height and depth, allowing for slimmer overall designs. Using the USB industry standard and a common connector type, for accessories such as chargers and headsets, greatly reduces the waste associated with new phone purchases by allowing re-use of the accessories. Applications with Multiple USB Controllers When operating with two USB controllers, it is recommended to configure the switches to OPEN before switching to the other (second) USB interface. The OPEN setting duration should be long enough for the accessory to go to a SE0 state, when the switch is set to the other (second) USB port, the new controller reenumerates. Using just five wires for all connection types considerably reduces the cost of wired accessories and simplifies their construction. The FSA806 facilitates adopting this methodology because it is designed to redirect the DP/DM pins from the USB connector to one of three ports at the baseband’s discretion. © 2010 Fairchild Semiconductor Corporation FSA806 • Rev. 1.0.1 FSA806 — USB2.0 High-Speed (480Mbps), UART, and Audio Switch with Negative Signal Capability Application Diagram www.fairchildsemi.com 2 The FSA806 select pins control the switching operations, SEL[0] and SEL[1] described in Table 1 Table 1. Selection Truth Table SEL[1] SEL[0] Switch Action 0 0 OPEN Description Open all switch paths (device in low-power mode) (1) 0 1 USB1, UART Closes USB1 path to D+/D-, default condition - DP_CON connected to DP_HOST1 - DM_CON connected to DM_HOST1 1 0 USB2, UART Closes USB2 path to D+/D- DP_CON connected to DP_HOST2 - DM_CON connected to DM_HOST2 1 1 AUDIO Closes audio path to D+/D- only - DP_CON connected to R_HOST - DM_CON connected to L_HOST Notes: 1. The SELECT pins are CMOS inputs and should not be left in a floating condition. Some applications require a UART path be in the CLOSED position on power-up for initial programming of the device under test. If that condition is desired, the two SELECT pins should be pulled to the correct levels with external resistors that should exceed 100KΩ to reduce the static power consumption. In other applications, adding weak pull-down resistors to GND defaults the device to all paths open (low-power mode). 2. When the audio switch is in the OPEN position, the R and L are terminated to GND with internal termination resistors to discharge any stray capacitance that could cause audio pop. © 2010 Fairchild Semiconductor Corporation FSA806 • Rev. 1.0.1 FSA806 — USB2.0 High-Speed (480Mbps), UART, and Audio Switch with Negative Signal Capability Mode Descriptions www.fairchildsemi.com 3 Figure 3. 12-Pin, UMLP Pin Assignments (Top-Through View) Pin Descriptions Name Pin # Description USB, UART Interface DP_HOST1 3 D+ signal, dedicated USB port to be connected to the resident USB or UART transceiver on the phone. DM_HOST1 4 D- signal, dedicated USB port to be connected to the resident USB or UART transceiver on the phone. 5 D+ signal, dedicated USB port to be connected to the resident USB or UART transceiver on the phone. 6 D- signal, dedicated USB port to be connected to the resident USB or UART transceiver on the phone. R_HOST 7 Right audio channel from phone audio codec. L_HOST 8 Left audio channel from phone audio codec. 2 Input voltage supply pin to be connected to the phone battery output. DP_HOST2 DM_HOST2 Audio Interface Power Interface VCC Connector Interface GND DP_CON DM_CON 9 Ground 11 Connected to the USB connector D+ pin; depending on the FSA806 signaling mode, this pin can share DP_HOST1, DP_HOST2 or R_HOST signals. 10 Connected to the USB connector D- pin; depending on the FSA806 signaling mode, this pin can share DM_HOST1, DM_HOST2 or L_HOST signals. FSA806 — USB2.0 High-Speed (480Mbps), UART, and Audio Switch with Negative Signal Capability Pin Configuration Switch Control SEL[1:0] 12, 1 Switch selection pins; refer to Table 1 for truth table. © 2010 Fairchild Semiconductor Corporation FSA806 • Rev. 1.0.1 www.fairchildsemi.com 4 Stresses exceeding the absolute maximum ratings may damage the device. The device may not function or be operable above the recommended operating conditions and stressing the parts to these levels is not recommended. In addition, extended exposure to stresses above the recommended operating conditions may affect device reliability. The absolute maximum ratings are stress ratings only. Symbol VCC Parameter Supply Voltage from Battery / Baseband USB VSW Switch I/O Voltage Stereo/Mono Audio Path Active All Other Channels IIK Input Clamp Diode Current ISW Switch I/O Current (Continuous) ISWPEAK TSTG Min. Max. Unit -0.5 6.0 V -0.5 VBUS+0.5 Vcc-8.5 VCC +0.5 -0.5 VCC +0.5 -50 Peak Switch Current (Pulsed at 1ms Duration, <10% Duty Cycle) V mA USB 50 Audio 60 All Other Channels 50 USB 150 mA Audio 150 mA All Other Channels 150 mA +150 °C Storage Temperature Range -65 mA TJ Maximum Junction Temperature +150 °C TL Lead Temperature (Soldering, 10 Seconds) +260 °C IEC 61000-4-2 System ESD USB Connector Pins (D+, D-, VBUS) Air Gap 15 Contact 8 Human Body Model, JEDEC JESD22-A114 All Pins 3 Charged Device Model, JEDEC JESD22-C101 All Pins 2 kV Recommended Operating Conditions The Recommended Operating Conditions table defines the conditions for actual device operation. Recommended operating conditions are specified to ensure optimal performance to the datasheet specifications. Fairchild does not recommend exceeding them or designing to Absolute Maximum Ratings. Symbol VCC VSW TA Parameter Min. Battery Supply Voltage Switch I/O Voltage USB/UART Path Active Audio Path Active Operating Temperature © 2010 Fairchild Semiconductor Corporation FSA806 • Rev. 1.0.1 Max. Unit 2.7 4.4 V 0 4.4 V VCC-7 2.0 V -40 +85 ºC FSA806 — USB2.0 High-Speed (480Mbps), UART, and Audio Switch with Negative Signal Capability Absolute Maximum Ratings www.fairchildsemi.com 5 All typical values are at 25ºC unless otherwise specified. Symbol Parameter VCC (V) Conditions TA = -40 to +85°C Min. Typ. Max. Unit Host Interface Pins (SEL[2:0]) VIH Input High Voltage 3.2 to 4.4 VIL Input Low Voltage 3.2 to 4.4 IIN Control Input Leakage IOZ Off-State Leakage 0 to 4.4 4.4 1.3 V 0.7 V VSW =0 to VCC -1 1 µA 0 ≤ DP_CON, DM_CON, DP_HOSTn, DM_HOSTn, R_HOST, L_HOST ≤ 3.6V -2 2 µA 10 µA 9 Ω Switch Off Characteristics IOFF Power-Off Leakage Current 0 All Ports Except MIC & Audio path VSW =0V to 4.4V, Figure 8 USB Switch On Paths RONUSB HS USB Range Switch On Resistance 3.2 to 4.4 VDP_CON/DM_CON=0V, 0.4V, ION=8mA, Figure 7 6 RONUART UART Range Switch On Resistance 3.2 to 4.4 VDP_CON/DM_CON =0V, 3.2V, ION=8mA, Figure 7 8 Ω Audio R/L Switch On Paths RONAUD Audio Switch On Resistance (1) RFLAT Audio RON Flatness RTERM Internal Termination Resistors 3.2 to 4.4 VL/R=-0.8V, 0.8V, ION=30mA, Figure 7 3.8 3 Ω 0.16 Ω 1 kΩ Total Switch Current Consumption ICCSL Battery Supply Sleep Mode Average Current 3.2 to 4.4 ICCWK Battery Supply Active Mode Average Current 3.2 to 4.4 ICCSELT Increase in ICCSL/ICCWK Current per Control Voltage and VCC 3.2 to 4.4 Static Current During Sleep Mode (SEL[2:0]=0) USB/UART Mode 1 20 35 µA Audio Mode 1 µA VSEL=2.8V and VCC=4.4V 8 µA VSEL=1.8V and VCC=4.4V 10 µA Note: 3. Flatness is defined as the difference between the maximum and minimum values of on resistance over the specified range of conditions. © 2010 Fairchild Semiconductor Corporation FSA806 • Rev. 1.0.1 µA FSA806 — USB2.0 High-Speed (480Mbps), UART, and Audio Switch with Negative Signal Capability Switch Path DC Electrical Characteristics www.fairchildsemi.com 6 All typical value are for VCC =3.8V at 25ºC unless otherwise specified. Symbol Xtalk Parameter VCC (V) Audio Mode 3.8 Active Channel Crosstalk DP_CON to USB Mode DM_CON OIRR Ratio THD+N Min. Typ. Max. Unit Figure dB Figure 10 dB Figure 9 f=20kHz, RT=32Ω, CL=0pF -95 f=1MHz, RT=50Ω, CL=0pF -75 f=240MHz, RT=50Ω, CL=0pF -36 f=20kHz, RT=32Ω, CL=0pF -100 f=1 MHz, RT=50Ω, CL=0pF -85 f=240MHz, RT=50Ω, CL=0pF -35 20Hz to 20kHz, RL=16Ω, Input Signal Range 1.6VPP 0.10 % Figure 14 20Hz to 20kHz, RL=32Ω, Input Signal Range 1.6VPP 0.07 % Figure 14 3.8 Audio Rejection Off Isolation Rejection TA = -40 to +85°C Conditions L_HOST to DM_CON, R_HOST to DP_CON 3.8 USB Rejection DM_HOST to DM_CON, DP_HOST to DP_CON Total Harmonic Distortion + Noise (Audio Path) 3.8 3.8 Note: 4. Guaranteed by characterization; not production tested. Capacitance Symbol CIN Parameter Select Pins Capacitance(5) VCC (V) 0 Conditions TA = -40 to +85°C Min. Typ. Max. Unit Figure VBIAS=0.2V 2.5 pF Figure 12 COFF(D+, D-) D+, D- On Capacitance (HS USB Mode)(5) 3.8 VBIAS=0.2V, f=1MHz 4.0 pF Figure 12 CON(D+, D-) D+, D- On Capacitance (HS USB Mode)(5) 3.8 VBIAS=0.2V, f=1MHz 6.8 pF Figure 13 FSA806 — USB2.0 High-Speed (480Mbps), UART, and Audio Switch with Negative Signal Capability Switch Path AC Electrical Characteristics(4) Note: 5. Guaranteed by characterization; not production tested. © 2010 Fairchild Semiconductor Corporation FSA806 • Rev. 1.0.1 www.fairchildsemi.com 7 Figure 4. High-Speed Test Results (DP_CON/DM_CON – DP_HOST1/DM_HOST1) Figure 5. High-Speed Test Results (DP_CON/DM_CON – DP_HOST2/DM_HOST2) Figure 6. High-Speed Eye Compliance Input Signal © 2010 Fairchild Semiconductor Corporation FSA806 • Rev. 1.0.1 FSA806 — USB2.0 High-Speed (480Mbps), UART, and Audio Switch with Negative Signal Capability High-Speed USB Eye Compliance Results www.fairchildsemi.com 8 VON I A(OFF) NC A nBn nA V IN V IN GND I ON Select V Sel = RON = VON / ION Select VSel = GND 0 or Vcc GND 0 orVcc **Each switch port is tested separately. Figure 7. On Resistance Figure 8. Off Leakage Network Analyzer NC RS Network Analyzer RS VS1, S2, S3 VSel RS and RT are functions of the application environment (see AC/DC tables). GND VCC B Input – VSEL mA CL GND nSn CROSSTALK = 20 Log (VOU Figure 10. Active Channel Crosstalk Generator VIN RT GND GND RS and RT are functions of the application environment (see AC tables for values). Figure 9. Channel Off Isolation RS VOUT RT Off-Isolation = 20 Log (VOUT / VIN ) VS RT GND GND VOUT GND VS GND GND GND GND VIN VS GND RT GND VOUT Off On Off 0V ΔVOUT GND VOUT FSA806 — USB2.0 High-Speed (480Mbps), UART, and Audio Switch with Negative Signal Capability Test Diagrams VSEL GND CL includes test fixture and stray capacitance Q = ΔVOUT • CL Figure 11. Charge Injection Test © 2010 Fairchild Semiconductor Corporation FSA806 • Rev. 1.0.1 www.fairchildsemi.com 9 nBn nSn Capacitance Meter VSel = f = 1MHz 0 or Vcc nBn Figure 12. Channel Off Capacitance Capacitance Meter nBn nSn V Sel = f = 1MHz 0 orV cc nBn Figure 13. Channel On Capacitance Audio Analyzer RS GND V IN VS GND V CNTRL GND VSel = GND 0 or Vcc RS and RT are functions of the application environment (see AC Tables for specific values). V OUT RT GND Figure 14. Total Harmonic Distortion + Noise © 2010 Fairchild Semiconductor Corporation FSA806 • Rev. 1.0.1 FSA806 — USB2.0 High-Speed (480Mbps), UART, and Audio Switch with Negative Signal Capability Test Diagrams (Continued) www.fairchildsemi.com 10 1.80 0.10 C A (11X) 2.10 B 0.563 0.588 2X 1 1.80 0.40 2.10 PIN#1 IDENT TOP VIEW 0.55 MAX. 0.10 C 0.10 C (12X) 0.20 2X RECOMMENDED LAND PATTERN 0.152 0.45 0.35 0.08 C 0.05 0.00 0.10 SEATING C PLANE SIDE VIEW 0.10 0.10 DETAIL A SCALE : 2X NOTES: 0.35 (11X) 0.45 3 A. PACKAGE DOES NOT FULLY CONFORM TO JEDEC STANDARD. B. DIMENSIONS ARE IN MILLIMETERS. 6 0.40 DETAIL A C. DIMENSIONS AND TOLERANCES PER ASME Y14.5M, 1994. 1 PIN#1 IDENT 12 9 BOTTOM VIEW D. LAND PATTERN RECOMMENDATION IS BASED ON FSC DESIGN ONLY. 0.25 0.15 (12X) 0.10 C A B 0.05 C E. DRAWING FILENAME: MKT-UMLP12Arev4. PACKAGE EDGE LEAD OPTION 1 SCALE : 2X LEAD OPTION 2 SCALE : 2X Figure 15. 12-Lead, Ultrathin Molded Leadless Package (UMLP) 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/. © 2010 Fairchild Semiconductor Corporation FSA806 • Rev. 1.0.1 FSA806 — USB2.0 High-Speed (480Mbps), UART, and Audio Switch with Negative Signal Capability Physical Dimensions www.fairchildsemi.com 11 FSA806 — USB2.0 High-Speed (480Mbps), UART, and Audio Switch with Negative Signal Capability 12 www.fairchildsemi.com © 2010 Fairchild Semiconductor Corporation FSA806 • Rev. 1.0.1