SMSC 公司的LAN9514 是集成了10/100以太网控制器的高性能高速USB 2.0集线器,包括了USB 2.0集线器,四个下游USB 2.0 PHY,一个上游USB 2.0 PHY,一个10/100以太网PHY,一个10/100以太网控制器,一个TAP控制器和一个EEPROM控制器. LAN9514 USB集线器能提供30多个可编程的特性,目标应用在台式和笔记本电脑,打印机,游戏机,嵌入式系统和坞站.本文介绍了LAN9514主要特性,器件亮点和主要优势,方框图以及采用USB电源开关和多晶硅熔丝的端口电源控制框图, EVB9514 评估板方框图和详细电路图和所用材料清单(BOM).
USB Hub with Integrated 10/100 Ethernet Controller
The LAN9514 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 is targeted as a high performance, low cost USB/Ethernet and USB/USB connectivity solution.
The LAN9514 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.
The LAN9514 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 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 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..
LAN9514 亮点:
Four downstream ports, one upstream port
Four integrated downstream USB 2.0 PHYs
One integrated upstream USB 2.0 PHY
Integrated 10/100 Ethernet MAC with full-duplex support
Integrated 10/100 Ethernet PHY with HP Auto-MDIX
Implements Reduced Power Operating Modes
Minimized BOM Cost
Single 25 MHz crystal (Eliminates cost of separate crystals for USB and Ethernet)
Built-in Power-On-Reset (POR) circuit (Eliminates requirement for external passive or active reset)
LAN9514 目标应用:
Desktop PCs
Notebook PCs
Printers
Game Consoles
Embedded Systems
Docking Stations
LAN9514 主要优势:
USB Hub
Fully compliant with Universal Serial Bus Specification Revision 2.0
HS (480 Mbps), FS (12 Mbps), and LS (1.5 Mbps) compatible
Four downstream ports, one upstream port
Port mapping and disable support
Port Swap: Programmable USB diff-pair pin location
PHY Boost: Programmable USB signal drive strength
Select presence of a permanently hardwired USB peripheral device on a port by port basis
Advanced power saving features
Downstream PHY goes into low power mode when port power to the port is disabled
Full Power Management with individual or ganged power control of each downstream port.
Integrated USB termination Pull-up/Pull-down resistors
Internal short circuit protection of USB differential signal pins
High-Performance 10/100 Ethernet Controller
Fully compliant with IEEE802.3/802.3u
Integrated Ethernet MAC and PHY
10BASE-T and 100BASE-TX support
Full- and half-duplex support with flow control
Preamble generation and removal
Automatic 32-bit CRC generation and checking
Automatic payload padding and pad removal
Loop-back modes
TCP/UDP checksum offload support
Flexible address filtering modes
One 48-bit perfect address
64 hash-filtered multicast addresses
Pass all multicast
Promiscuous mode
Inverse filtering
Pass all incoming with status report
Wakeup packet support
Integrated Ethernet PHY
Auto-negotiation
Automatic polarity detection and correction
HP Auto-MDIX
Energy Detect
Power and I/Os
Three PHY LEDs
Eight GPIOs
Supports bus-powered and self-powered operation
Internal 1.8v core supply regulator
External 3.3v I/O supply
Miscellaneous features
Optional EEPROM
Optional 24MHz reference clock output for partner hub
IEEE 1149.1 (JTAG) Boundary Scan
Software
Windows 2000/XP/Vista Driver
Linux Driver
Win CE Driver
MAC OS Driver
EEPROM Utility
Packaging
64-pin QFN, lead-free RoHS compliant
Environmental
Commercial Temperature Range (0℃ to +70℃)
±8kV HBM without External Protection Devices
±8kV contact mode (IEC61000-4-2)
±15kV air-gap discharge mode (IEC61000-4-2)
图1. LAN9514 内部方框图
图2.LAN9514采用USB电源开关的端口电源控制框图
图3.LAN9514采用多晶硅熔丝的端口电源控制框图
EVB9514 评估板
The EVB9514 is an Evaluation Board (EVB) that utilizes the LAN9514 to provide a four port USB 2.0 hub with an integrated 10/100 Ethernet controller. The EVB9514 provides USB connectivity via one type B upstream USB connector and four type A downstream USB connectors. An RJ-45 integrated magnetics Ethernet jack with link/activity LEDs provides 10/100 Ethernet connectivity. The EVB9514 supports both bus-powered and self-powered modes of operation.
The EVB9514 includes a 512x8 Microwire EEPROM that may be used to automatically load USB descriptors, USB device configuration, and the MAC address upon reset. A GPIO header provides access to the LAN9514s general purpose I/O signals. For debugging purposes, the internal LAN9514 TAP controller is accessible via the included JTAG header.
EVB9514 Block Diagram
图4.EVB9514 评估板方框图
图5.EVB9514 评估板电路图(1)
图6.EVB9514 评估板电路图(2)
图7.EVB9514 评估板电路图(3)
EVB9514 评估板材料清单(BOM):
