Datasheet

 2009-2016 Microchip Technology Inc. DS00002306A-page 5
LAN9514/LAN9514I
All required resistors on the USB ports are integrated into the hub. This includes all series termination resistors on D+
and D- pins and all required pull-down and pull-up resistors on D+ and D- pins. The over-current sense inputs for the
downstream facing ports have internal pull-up resistors.
Four external ports are available for general USB device connectivity.
1.1.3 ETHERNET CONTROLLER
The 10/100 Ethernet controller provides an integrated Ethernet MAC and PHY which are fully IEEE 802.3 10BASE-T
and 802.3u 100BASE-TX compliant. The 10/100 Ethernet controller also supports numerous power management
wakeup features, including “Magic Packet”, “Wake on LAN” and “Link Status Change”. These wakeup events can be
programmed to initiate a USB remote wakeup.
The 10/100 Ethernet PHY integrates an IEEE 802.3 physical layer for twisted pair Ethernet applications. The PHY block
includes support for auto-negotiation, full or half-duplex configuration, auto-polarity correction and Auto-MDIX. Minimal
external components are required for the utilization of the integrated PHY.
The Ethernet controller implements four USB endpoints: Control, Interrupt, Bulk-in, and Bulk-out. The Bulk-in and Bulk-
out Endpoints allow for Ethernet reception and transmission respectively. Implementation of vendor-specific commands
allows for efficient statistics gathering and access to the Ethernet controller’s system control and status registers.
1.1.4 EEPROM CONTROLLER
The LAN9514/LAN9514i contains an EEPROM controller for connection to an external EEPROM. This allows for the
automatic loading of static configuration data upon power-on reset, pin reset, or software reset. The EEPROM can be
configured to load USB descriptors, USB device configuration, and the MAC address.
1.1.5 PERIPHERALS
The LAN9514/LAN9514i also contains a TAP controller, and provides three PHY LED indicators, as well as eight general
purpose I/O pins. All GPIOs can serve as remote wakeup events when LAN9514/LAN9514i is in a suspended state.
The integrated IEEE 1149.1 compliant TAP controller provides boundary scan via JTAG.
1.1.6 POWER MANAGEMENT
The LAN9514/LAN9514i features three variations of USB suspend: SUSPEND0, SUSPEND1, and SUSPEND2. These
modes allow the application to select the ideal balance of remote wakeup functionality and power consumption.
• SUSPEND0: Supports GPIO, “Wake On LAN”, and “Magic Packet” remote wakeup events. This suspend state
reduces power by stopping the clocks of the MAC and other internal modules.
• SUSPEND1: Supports GPIO and “Link Status Change” for remote wakeup events. This suspend state consumes
less power than SUSPEND0.
• SUSPEND2: Supports only GPIO assertion for a remote wakeup event. This is the default suspend mode for the
LAN9514/LAN9514i.