描述
The Microchip USB2534 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 USB2534 is fully compliant with the USB 2.0 Specification, USB 2.0 Link Power Management Addendum 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 ports.
The USB2534 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. Additionally, all required resistors on the USB ports are integrated into the hub, including all series termination and_pull-up/pulldown resistors on the D+ and_D– pins.
The USB2534 supports both upstream battery charger detection and_downstream battery charging. The USB2534 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 USB2534 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 OTPThe USB2534 provides an additional USB endpoint dedicated for use as a USB to I2C interface, allowing external circuits or devices to be monitored, controlled, or configured via the USB interface.
特性
Highlights
• Hub Controller IC with 4 downstream 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™ bridge endpoint support
• USB Link Power Management (LPM) support
• SUSPEND pin for remote wakeup indication to host
• Vendor Specific Messaging (VSM) support
• Enhanced OEM configuration options available through a single serial I2C EEPROM, OTP, or SMBus Slave Port
• 36-pin (6x6mm) SQFN, RoHS compliant package
• Footprint compatible with USB2514B
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
应用
·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
USB2534I-1080AEN是一款MTT(多交易转换器)USB 2.0高速集线器控制器,具有4个下行端口和先进的嵌入式USB应用功能。USB2534完全符合USB2.0规范、USB2.0链接电源管理附录,并将作为全速集线器或全/高速集线器连接到上游端口。该4端口集线器在所有启用的下游端口上支持低速、全速和高速(如果作为高速集线器运行)的下游设备。USB2534专门为嵌入式系统进行了优化,在这些系统中,高性能和最低BOM成本是关键的设计要求。待机模式的功率已经降到最低,参考时钟输入可以根据客户的具体应用进行调整。此外,USB端口上的所有必要电阻都集成在集线器中,包括D+和D-引脚上的所有串联终止和上拉/下拉电阻。
上行和下行端口(DCP、CDP、SDP)支持USB-IF电池充电器1.2版
支持Apple®设备的电池充电
支持USB至I²C™桥接端点
支持USB链接电源管理(LPM)
用于向主机发出远程唤醒指示的SUSPEND引脚
支持供应商特定信息传递(VSM)
低功耗运作
全面的电源管理,对每个下游端口进行单独或联合的电源控制
支持四页配置的OTP闪存
片上上电复位 (POR)
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