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Datasheet (English, 0.98 KB)
Reference Design Schematics (English, 77.2 KB)
BOM (English, 20.6 KB)
User Guide (English, 302 KB)
USB2524 USB MultiSwitch™ Hub - Industry's 1st Hi-Speed Hub & Switch in One!
SMSC's new USB2524 is the industry's first USB switching hub that combines a USB Hi-Speed hub and switching functionality in a single device. Equipped with two upstream ports and four downstream ports, USB2524 enables USB device sharing and switching between two USB hosts without "cable swapping".
Requiring no more than standard USB hub driver support, the USB2524 appears as a 4-port USB hub to either USB host system and supports standard USB topology. As such USB2524 USB MultiSwitch hub is suitable for such applications as desktop PC drive-bays, mobile PC dock stations and port replicators, all-in-one and photo printers, LCD monitors, KVM switches, USB device sharing peripherals, set-top boxes, DVD/HDD recorders and players - indeed any USB dual-role host and device system.
General Features
- Compliant with USB2.0 Specification
- Hub controller IC with two upstream ports and four downstream ports
- MultiTRAK™ technology provides one transaction translator per port
- Default configuration with pin selectable options
- 56-Pin QFN green, lead-free package
Hardware Features
- Integrated 1.8V regulator, termination and pull-up/pull-down resistors
- Internal short circuit protection of DP and DM lines
- On-chip oscillator uses low cost 24MHz crystal
- Supports individual over-current protection and power control
Pin Selectable Options for Default Configuration
- Select downstream ports as non-removable ports
- Select downstream ports as disabled ports
- Enable/disable downstream port LED indicators
- Select downstream port power control and over-current detection on a ganged or individual basis
- Select downstream port power control polarity
Device Sharing and Switching
- Per-port switching provides maximum device sharing functionality
- Flexible switching modes ease system design
- Programmable auto-switch mode enables unique applications
High Throughput
- MultiTRAK architecture provides dedicated TT for every downstream port
- Maximum USB full-speed data rate at 12 Mbps per port even under full load
- Aggregate 960 Mbps maximum data rate when both Hi-Speed hosts are active
Minimum Software Overhead
- Appears as a standard USB2.0 hub controller on either host system
- Requires no more than standard USB hub-class driver support already native in most operating systems
- Standard USB connect and disconnect behavior as device switched from one host to the other