LAN9500 Datasheet, PDF (80/213 Pages) SMSC Corporation – USB 2.0 to 10/100 Ethernet Controller Promiscuous mode

LAN950x
TABLE 5-57: EEPROM FORMAT (CONTINUED)
EEPROM Address
EEPROM Contents
1Dh
Full-Speed Configuration and Interface Descriptor Word Offset
1Eh
(LAN9500A/LAN9500Ai ONLY)
LSB of GPIO Wake 0-10 (GPIOWKn) field of General Purpose IO Wake Enable and
Polarity Register (GPIO_WAKE)
1Fh
(LAN9500A/LAN9500Ai ONLY)
MSB of GPIO Wake 0-10 (GPIOWKn) field of General Purpose IO Wake Enable and
Polarity Register (GPIO_WAKE)
20h
(LAN9500A/LAN9500Ai ONLY)
GPIO PME Flags
Note 1: The descriptor type for the device descriptors specified in the EEPROM is a don't care and always overwrit-
ten by HW to 0x1.
The descriptor size for the device descriptors specified in the EEPROM is a don't care and always overwrit-
ten by HW to 0x12.
The descriptor type for the configuration descriptors specified in the EEPROM is a don't care and always
overwritten by HW to 0x2.
2: Descriptors specified in EEPROM having bcdUSB, bMaxPacketSize0, and bNumConfigurations fields
defined with values other than 0200h, 40h, and 1, respectively, will result in unwanted behavior and untow-
ard results.
3: EEPROM byte addresses past the indicated address can be used to store data for any purpose:
(LAN9500/LAN9500i ONLY): 1Dh
(LAN9500A/LAN9500Ai ONLY): 20h
Table 5-58 describes the configuration flags. The configuration flags override the affects of the RMT_WKP and PWR_-
SEL straps. If a configuration descriptor exists in the EEPROM it will override both the configuration flags and associated
straps.
TABLE 5-58: CONFIGURATION FLAGS
Bits
Description
7:6 RESERVED
5:4 (LAN9500A/LAN9500Ai ONLY, Otherwise RESERVED)
PHY Boost
Refer to the PHY Boost (PHY_BOOST) field of the Hardware Configuration Register (HW_CFG) on page
122 for permissible field values.
3 RESERVED
2 Remote Wakeup Support
0 = The device does not support remote wakeup.
1 = The device supports remote wakeup.
1 (LAN9500A/LAN9500Ai ONLY, Otherwise RESERVED)
LED Select
Refer to the LED Select (LED_SEL) bit of the LED General Purpose IO Configuration Register (LED_G-
PIO_CFG) on page 129 for bit function definitions.
0 Power Method
0 = The device is bus powered.
1 = The device is self powered.
Table 5-59 describes the GPIO PME flags (LAN9500A/LAN9500Ai ONLY).
DS00001875A-page 80
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