Status: In Production
The Microchip USB2533 is a low-power, OEM configurable, MTT (Multi-Transaction Translator) USB 2.0 hub controller with 3 downstream ports and advanced features for embedded USB applications. The USB2533 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 3-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 USB2533 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 USB2533 supports both upstream battery charger detection and downstream battery charging. The USB2533 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 USB2533 provides the battery charging handshake and supports the following USB-IF BC1.2 charging profiles:
The EVB-USB2534BC is a 4-layer RoHS-compliant Evaluation Board that utilizes the USB2534 to provide a fully functional 4-port high-speed hub with battery charging capabilities. The USB2534 is pin compatible with the industry leading USB2514B USB2.0 hub allowing simple migration of USB2512B designs. The USB2532 is configured for operation through internal default settings and supports custom...
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