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LAN9514i-JZX Datasheet(PDF) 6 Page - SMSC Corporation |
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LAN9514i-JZX Datasheet(HTML) 6 Page - SMSC Corporation |
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6 / 52 page  USB 2.0 Hub and 10/100 Ethernet Controller Datasheet Revision 1.2 (02-29-12) 6 SMSC LAN9514/LAN9514i DATASHEET Chapter 1 Introduction 1.1 Block Diagram 1.1.1 Overview The LAN9514/LAN9514i is a high performance Hi-Speed USB 2.0 hub with a 10/100 Ethernet controller. With applications ranging from embedded systems, desktop PCs, notebook PCs, printers, game consoles, and docking stations, the LAN9514/LAN9514i is targeted as a high performance, low cost USB/Ethernet and USB/USB connectivity solution. The LAN9514/LAN9514i contains an integrated USB 2.0 hub, four integrated downstream USB 2.0 PHYs, an integrated upstream USB 2.0 PHY, a 10/100 Ethernet PHY, a 10/100 Ethernet Controller, a TAP controller, and a EEPROM controller. A block diagram of the LAN9514/LAN9514i is provided in Figure 1.1. The LAN9514/LAN9514i hub provides over 30 programmable features, including: PortMap (also referred to as port remap) which provides flexible port mapping and disabling sequences. The downstream ports of the LAN9514/LAN9514i hub can be reordered or disabled in any sequence to support multiple platform designs’ with minimum effort. For any port that is disabled, the LAN9514/LAN9514i automatically reorders the remaining ports to match the USB host controller’s port numbering scheme. PortSwap which adds per-port programmability to USB differential-pair pin locations. PortSwap allows direct alignment of USB signals (D+/D-) to connectors avoiding uneven trace length or crossing of the USB differential signals on the PCB. PHYBoost which enables four programmable levels of USB signal drive strength in USB port transceivers. PHYBoost attempts to restore USB signal integrity that has been compromised by system level variables such as poor PCB layout, long cables, etc. Figure 1.1 Internal Block Diagram TAP Controller EEPROM Controller 10/100 Ethernet Controller USB 2.0 Hub LAN9514/LAN9514i Ethernet EEPROM JTAG USB DP/DM Downstream USB PHY Ethernet PHY Upstream USB PHY Downstream USB PHY Downstream USB PHY Downstream USB PHY USB DP/DM USB DP/DM USB DP/DM USB DP/DM |
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