사양
USB4715T-I/Y9X is a fully integrated single-chip USB 2.0 Hi-Speed hub controller manufactured by Microchip Technology, equipped with embedded 32-bit microcontroller, multi-transaction translators and FlexConnect port switching technology for embedded and automotive USB expansion designs.
Suffix Breakdown
- T: Tape-and-reel bulk packaging (3000 units per reel)
- I: Industrial wide temperature grade (-40°C ~ +85°C)
- Y9X: 48-pin exposed pad VQFN 7mm×7mm surface-mount package
USB4715 Chip
48VQFN Package
1. Core USB Hub Architecture
- Port configuration: 1 upstream USB port + 4 independent downstream USB 2.0 ports
- Full USB 2.0 compliance: High-Speed (480 Mbps), Full-Speed (12 Mbps), Low-Speed (1.5 Mbps)
- MultiTRAK™ MTT architecture: Dedicated independent transaction translator for each downstream port, eliminating bandwidth bottlenecks for mixed-speed USB peripherals
- FlexConnect proprietary function: Any downstream port can be dynamically swapped to upstream host port, enabling bidirectional host switching without extra multiplexers
- Per-port differential pair signal swap (PortSwap) for simplified PCB routing
2. Advanced Battery Charging Support
Fully compliant with USB Battery Charging Specification Rev 1.2:
- DCP (Dedicated Charging Port), CDP (Charging Downstream Port), SDP (Standard Downstream Port) modes
- Built-in Apple device charging detection & China mobile charging profile emulation
- Per-port programmable power gating, short-circuit thermal shutdown and over-current protection for each downstream channel
3. Multi-Function Bridging Interfaces
Integrated multi-protocol bridge controller converting USB to peripheral buses:
- SMBus/I²C for external EEPROM configuration and system monitoring
- SPI/SQI flash interface for firmware storage and upgrade
- Full-duplex UART serial port
- I2S audio interface (16-bit, 48kHz stereo, Apple audio authentication supported)
- General-purpose GPIO expansion pins for external status LED and power control logic
- On-chip OTP memory for factory pre-configuration of VID/PID, port behavior and charging parameters
4. Power Management & Electrical Specs
- Single supply voltage: 3.0 V ~ 3.6 V (nominal 3.3 V industrial logic rail)
- Typical active operating current: 148 mA; multiple suspend power-saving modes with ultra-low standby drain
- USB LPM (Link Power Management) support for energy-efficient embedded devices
- Dedicated SUSPEND pin to generate host remote wake-up signals
- Integrated 30 MHz internal oscillator, only single external 25 MHz crystal required for all USB and bridge clocks
5. Reliability & Protection Features
- All USB differential pins withstand ±8 kV contact / ±15 kV air ESD protection
- Per-port power fault detection with independent fault indicator output
- Vendor Specific Messaging (VSM) for custom OEM command control via USB
- Built-in watchdog timer for embedded firmware crash recovery
6. Environmental & Packaging Ratings
- Operating temperature range (I industrial grade): -40°C to +85°C
- MSL 3 moisture sensitivity level (168-hour floor life before reflow soldering)
- Fully RoHS lead-free and halogen-free compliant, REACH compliant
- Package: 48-pin VQFN exposed thermal pad, compact 7mm × 7mm footprint for dense embedded PCBs
- Standard tape-and-reel reel packaging (T suffix) for automated high-volume SMT assembly
일반적인 애플리케이션
- Automotive infotainment head units, vehicle USB docking and media hubs
- Industrial embedded gateway multi-port USB expansion modules
- POS payment terminals, digital signage and monitor built-in USB hubs
- Laptop/tablet USB docking stations and portable multi-function adapters
- Medical portable diagnostic equipment with USB peripheral and serial bridge
- Media players, smart TV and set-top box multi-port USB interface boards
- Factory test equipment with USB-to-UART/SPI/I2C conversion functions
- Embedded single-board computer multi-peripheral USB concentrators
LXB Semicon supplies original Microchip USB4715T-I/Y9X industrial-grade 4-port USB2.0 MTT hub controller with integrated bridging MCU
