The Microchip USB4604 is a low-power, OEM configurable, MTT (Multi-Transaction Translator) USB 2.0 hub controller with 4 downstream ports and advanced features for embedded USB applications. The USB4604 is fully compliant with the USB 2.0 Specification, USB 2.0 Link Power Management Addendum, High-Speed Inter-Chip (HSIC) USB Electrical Specification Revision 1.0, and will attach to an upstream port as a Full-Speed hub or as a Full-/Hi-Speed hub. The 4-port hub supports Low-Speed, Full-Speed, and Hi-Speed (if operating as a Hi-Speed hub) downstream devices on all of the enabled downstream (non-HSIC) ports. HSIC ports support only Hi-Speed operation.

The USB4604 has been specifically optimized for embedded systems where high performance, and minimal BOM costs are critical design requirements. Standby mode power has been minimized and reference clock inputs can be aligned to the customer’s specific application. Flexible power rail options ease integration into energy efficient designs by allowing the USB4604 to be powered in a single-source (VBUS (5V), VBAT, 3.3V) or a dual-source (VBAT + 1.8, 3.3V + 1.8) configuration. Additionally, all required resistors on the USB ports are integrated into the hub, including all series termination and pull-up/pull-down resistors on the D+ and D– pins.

*The USBCheck online design review service is subject to Microchip's Program Terms and Conditions and requires a myMicrochip account.

* Please see our MikroElektronika USB Wizard board at:

    shop.mikroe.com/usb-wizard

Highlights

• Hub Controller IC with 4 downstream ports
• High-Speed Inter-Chip (HSIC) support
  • Upstream port selectable between HSIC or USB 2.0
• USB-IF Battery Charger revision 1.2 support on up and downstream ports (DCP, CDP, SDP)
• Battery charging support for Apple® devices
• FlexConnect: Downstream port 1 able to swap with upstream port, allowing master capable devices to control other devices on the hub
• USB to I2C™/SPI bridge endpoint support
• USB Link Power Management (LPM) support
• SUSPEND pin for remote wakeup indication to host
• Start Of Frame (SOF) synchronized clock output pin
• Vendor Specific Messaging (VSM) support
• Enhanced OEM configuration options available through OTP or SMBus Slave Port
• Flexible power rail support
  • VBUS (5V) or VBAT only operation
  • 3.3V only operation
  • VBAT + 1.8V operation
  • 3.3V + 1.8V operation
• 48-pin (7x7mm) SQFN, RoHS compliant package

Target Applications

• LCD Monitors and TVs
• Multi-function USB Peripherals
• PC Motherboards
• Set-top Boxes, DVD Players, DVR/PVR
• Printers and Scanners
• PC Media Drive Bay
• Portable Hub Boxes
• Mobile PC Docking
• Embedded Systems