LAN9514 datasheet(21/54 Pages) MICROCHIP

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 2009-2016 Microchip Technology Inc.

DS00002306A-page 21

LAN9514/LAN9514I

Note:

EEPROM byte addresses past 39h can be used to store data for any purpose.

Table 3-2 describes the Configuration Flags

3.1.1

HUB CONFIGURATION

EEPROM offsets 20h through 39h comprise the Hub Configuration parameters. Table 3-3 describes these parameters

and their default ROM values (Values assumed if no valid EEPROM present).

2Fh

Hub Controller Max Current (Bus) Register (HCMCB)

30h

Power-on Time Register (PWRT)

31h

Boost_Up Register (BOOSTUP)

32h

Boost_5 Register (BOOST5)

33h

Boost_4:2 Register (BOOST42)

34h

RESERVED

35h

Port Swap Register (PRTSP)

36h

Port Remap 12 Register (PRTR12)

37h

Port Remap 34 Register (PRTR34)

38h

Port Remap 5 Register (PRTR5)

39h

Status/Command Register (STCD)

TABLE 3-2:

CONFIGURATION FLAGS DESCRIPTION

Bit

Name

Description

7:3

RESERVED

00000b

Remote Wakeup Support

0 = The device does not support remote wakeup.

1 = The device supports remote wakeup.

RESERVED

Power Method

0 = The device Controller is bus-powered.

1 = The device Controller is self-powered.

TABLE 3-3:

HUB CONFIGURATION

EEPROM

Offset

Description

Default

20h

Vendor ID LSB Register (VIDL)

Least Significant Byte of the Vendor ID. This is a 16-bit value that uniquely identifies

the Vendor of the user device (assigned by USB-Interface Forum).

24h

TABLE 3-1:

EEPROM FORMAT (CONTINUED)

EEPROM Address

EEPROM Contents

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