LAN9730 Datasheet, PDF (160/222 Pages) SMSC Corporation – High-Speed Inter-Chip (HSIC) USB 2.0

LAN9730/LAN9730i
6.3.30 STRING DESCRIPTOR ATTRIBUTES REGISTER 1 (STRNG_ATTR1)
Address:
0ACh
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: If a descriptor does not exist in Descriptor RAM, its size value must be written as 00h.
Note:
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.
Note: Writing to this register when an EEPROM is present is prohibited and will result in untoward operation and
unexpected results.
Note: This register is protected by Reset Protection (RST_PROTECT).
Bits
Description
31:8 RESERVED
7:0 Interface String Descriptor Size (INTSTR_DESC_SIZE)
Type
RO
R/W
Default
-
00h
DS00001946A-page 160
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