LAN9730 Datasheet, PDF(87/222 Page) SMSC Corporation – High-Speed Inter-Chip (HSIC) USB 2.0

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LAN9730 Datasheet, PDF (87/222 Pages) SMSC Corporation – High-Speed Inter-Chip (HSIC) USB 2.0

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LAN9730/LAN9730i

TABLE 4-56: EEPROM FORMAT (CONTINUED)

EEPROM Address

16h

17h

18h

19h

1Ah

1Bh

1Ch

1Dh

1Eh

1Fh

20h

EEPROM Contents

Hi-Speed Device Descriptor Length (bytes)

Hi-Speed Device Descriptor Word Offset

Hi-Speed Configuration and Interface Descriptor Length (bytes)

Hi-Speed Configuration and Interface Descriptor Word Offset

Full-Speed Device Descriptor Length (bytes)

Full-Speed Device Descriptor Word Offset

Full-Speed Configuration and Interface Descriptor Length (bytes)

Full-Speed Configuration and Interface Descriptor Word Offset

LSB of GPIO Wake 0-10 (GPIOWKn) field of General Purpose IO Wake Enable and

Polarity Register (GPIO_WAKE)

MSB of GPIO Wake 0-10 (GPIOWKn) field of General Purpose IO Wake Enable and

Polarity Register (GPIO_WAKE)

GPIO PME Flags

Note:

Note:

Note:

The descriptor type for the Device Descriptors specified in the EEPROM is a don't care and always over-

written by HW to 0x1.

The descriptor size for the Device Descriptors specified in the EEPROM is a don't care and always over-

written 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.

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.

EEPROM byte addresses past 20h can be used to store data for any purpose.

Table 4-57 describes the configuration flags. The configuration flags override the affects of the RMT_WKP strap. If a

Configuration Descriptor exists in the EEPROM it will override both the configuration flags and associated straps.

TABLE 4-57: CONFIGURATION FLAGS

Bits

Description

7:4 RESERVED

3 RESERVED

2 Remote Wakeup Support

0 = The device does not support remote wakeup.

1 = The device supports remote wakeup.

1 LED Select

Refer to the LED Select (LED_SEL) bit of the LED General Purpose IO Configuration Register (LED_GPI-

O_CFG) for bit function definitions.

0 Power Method

0 = The device is bus powered.

1 = The device is self powered.

ï£ 2012-2015 Microchip Technology Inc.

DS00001946A-page 87

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