LAN9500AI datasheet(157/213 Pages) MICROCHIP

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DS00001875A-page 157

LAN950x

7.3.31

FLAG ATTRIBUTES REGISTER (FLAG_ATTR)

This register is supported only by LAN9500A/LAN9500Ai.

This register sets the values of elements of the Configuration Flags and PME flags when no EEPROM is present and

customized operation, using Descriptor RAM images, is to occur. This register does not contain Configuration Flag ele-

ments that are components of other registers. Those elements will be programmed by the driver software directly prior

to initiating customized operation via Descriptor RAM.

Note 1: This register only affects system operation when an EEPROM is not present and the EEPROM Emulation

Enable (EEM) bit indicates Descriptor RAM and the Attributes Registers are to be used for descriptor pro-

cessing.

2: Writing to this register when an EEPROM is present is prohibited and will result in untoward operation and

unexpected results.

3: This register is protected by Reset Protection (RST_PROTECT).

Note 7-21

The default value depends on the setting of the RMT_WKP strap.

Note 7-22

The default value depends on the setting of the PWR_SEL strap.

Address:

0B0h

Size:

32 bits

Bits

Description

Type

Default

31:18

RESERVED

Remote Wakeup Support (RMT_WKP)

Refer to Remote Wakeup Support bit in Table 5-58, “Configuration Flags,” on

page 80 for definition.

R/W

Note 7-21

Power Method (PWR_SEL)

Refer to Power Method bit in Table 5-58, “Configuration Flags,” on page 80

for definition.

R/W

Note 7-22

15:8

RESERVED

7:0

GPIO PME Flags (PME_FLAGS)

Refer to Table 5-59, “GPIO PME Flags,” on page 81 for bit definitions.

R/W

00h

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