LAN89530 datasheet(22/218 Pages) MICROCHIP

22 / 218 page

LAN89530

DS60001347A-page 22

 2012-2015 Microchip Technology Inc.

TABLE 2-5:

USB PINS

Num Pins

Name

Symbol

Buffer

Type

Description

USB DMINUS

USBDM

AIO

Note:

The functionality of this pin may be

swapped to USB DPLUS via the

PORT_SWAP configuration strap.

1USB

DPLUS

USBDP

AIO

Note:

The functionality of this pin may be

swapped to USB DMINUS via the

PORT_SWAP configuration strap.

Detect

Upstream

VBUS Power

VBUS_DET

IS_5V

(PD)

Detects state of upstream bus power.

For bus powered applications, this pin must be

tied to VDD33IO.

For self powered applications where the device is

permanently attached to a host, VBUS_DET

should be pulled to VDD33IO. For other self pow-

ered applications, refer to the device reference

schematic for additional connection information.

Note:

This pin may be used to signal bus

power availability when PME Mode of

operation is in effect. Refer to Chapter

5.0, "PME Operation" for additional

information.

External USB

Bias Resistor

USBRBIAS

Used for setting HS transmit current level and on-

chip termination impedance. Connect to an exter-

nal 12.0 kΩ 1.0% resistor to ground.

LAN89530 Datasheet(PDF) 22 Page - Microchip Technology

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