Infineon Technologies EZ- USB™ HX2G3 USB 2.0 Hub Controllers
Infineon Technologies EZ- USB™ HX2G3 USB 2.0 Hub Controllers include programmable USB 2.0 PHYs and one Serial Communication Block (SCB) that supports I2C or SPI. These hub controllers operate using FirmWare (FW) in ROM, an external I2C EEPROM/SPI flash, or downloaded from an external I2C master. The HX2G3 USB 2.0 hub controllers are integrated with an Arm® Cortex®-M0+ CPU, 32kB of SRAM, and 32kB of ROM. These hub controllers are equipped with an embedded eFuse to support trimming, VID/PID, and PHY configuration. The HX2G3 USB 2.0 hub controllers support multiple port configurations and active and deep sleep power modes. These hub controllers are available in 36-LGA, 40-QFN, and 48-QFN packages. Typical applications include industrial and commercial.
Features
- USB 2.0 hub controller supports high-speed (480Mbps), full-speed (12Mbps), and low-speed (1.5Mbps) data rates
- Integrated with an Arm® Cortex®-M0+ CPU, 32kB RAM, and 32kB ROM
- Multiple port configuration options:
- One upstream port and four downstream ports (1:4)
- One upstream port and two downstream ports (1:2)
- Embedded eFuse to support trimming, VID/PID, and PHY configuration
- Optional configurable Full-Speed device function support:
- Optional CDC device class support
- Firmware download and configuration supported through USB (CDC interface) to the I2C EEPROM/SPI flash connected externally to EZ-USB™ HX2G3
- Firmware download and configuration supported through I2C from an external I2C master, saving BOM for external SPI flash or I2C EEPROM for boot
- Individual and ganged port power control
- Support active and deep sleep power modes
- No power sequence needed
- Supports hub cascade mode configurable option to output the reference clock for the cascaded hubs to share the source clock and save
crystal cost - Extensive configuration support with EZ-USB™ HX2G3 configuration utility for:
- Vendor ID (VID)/Product ID (PID), manufacturer and product string descriptors
- Enabling or disabling the DS ports
- Setting removable and non-removable devices
- Ganged or individual power switch enables for downstream ports
- Polarity selection for power enable outputs and overcurrent inputs
- USB 2.0 PHY parameters
- Swap DP/DM signals for flexible PCB routing
- Multiple boot options to load configuration and firmware:
- ROM
- External EEPROM
- External I2C master
- External SPI flash
Applications
- Industrial
- Commercial
Specifications
Block Diagrams
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