Datasheet

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
2 Remote Wakeup Support 0 = The device does not support remote wakeup.
1 = The device supports remote wakeup.
1 RESERVED 0b
0 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