LAN9514 datasheet(5/54 Pages) MICROCHIP

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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.

LAN9514 Datasheet(PDF) 5 Page - Microchip Technology