LAN9500 Datasheet, PDF (155/213 Pages) SMSC Corporation – USB 2.0 to 10/100 Ethernet Controller Promiscuous mode

LAN950x
7.3.29 STRING DESCRIPTOR ATTRIBUTES REGISTER 0 (STRNG_ATTR0)
This register is supported only by LAN9500A/LAN9500Ai.
Address:
0A8h
Size:
32 bits
This register sets the length values for the named string descriptors that have been loaded into Descriptor RAM via the
Data Port registers. The Descriptor RAM images may be used, in conjunction with this register, to facilitate customized
operation when no EEPROM is present.
Note 1: If a descriptor does not exist in Descriptor RAM, its size value must be written as 00h.
2: 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.
3: Writing to this register when an EEPROM is present is prohibited and will result in untoward operation and
unexpected results.
4: This register is protected by Reset Protection (RST_PROTECT).
Bits
31:24
23:16
15:8
7:0
Description
Configuration String Descriptor Size (CFGSTR_DESC_SIZE)
Serial Number String Descriptor Size (SERSTR_DESC_SIZE)
Product Name String Descriptor Size (PRODSTR_DESC_SIZE)
Manufacturing String Descriptor Size (MANUF_DESC_SIZE)
Type
R/W
R/W
R/W
R/W
Default
00h
00h
00h
00h
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DS00001875A-page 155