描述 Description

The Microchip USB4624 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 USB4624 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 USB4624 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 USB4624 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 USB4624 supports both upstream battery charger detection and downstream battery charging. The USB4624 integrated battery charger detection circuitry supports the USB-IF Battery Charging (BC1.2) detection method and most Apple devices. These circuits are used to detect the attachment and type of a USB charger and provide an interrupt output to indicate charger information is available to be read from the device’s status registers via the serial interface. The USB4624 provides the battery charging handshake and supports the following USB-IF BC1.2 charging profiles:

DCP: Dedicated Charging Port (Power brick with no data)CDP: Charging Downstream Port (1.5A with data)SDP: Standard Downstream Port (0.5A with data)Custom profiles loaded via SMBus or OTPhe USB4624 provides an additional USB endpoint dedicated for use as a USB to I2C/SPI interface, allowing external circuits or devices to be monitored, controlled, or configured via the USB interface.

特性 Features

Highlights
? Hub Controller IC with 4 downstream ports
? High-Speed Inter-Chip (HSIC) support
? Upstream port selectable between HSIC or USB 2.0
? 2 downstream HSIC ports
? 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

應用 Application

·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

簡介

USB4624屬于集成電路（IC）的控制器。由制造生產(chǎn)的USB4624控制器該系列產(chǎn)品主要用于在采用不同通信協(xié)議和/或信令方法的端點之間提供信息連接。示例包括將 I2C 總線連接到 UART，將 USB 連接到 I2C、SPI、以太網(wǎng)或 UART、以太網(wǎng) MAC 和 PHY 等的器件。此外，還包括用于通過為點對點通信設計的接口建立多路連接的器件，例如 USB 集線器控制器。