USB2642 Datasheet, PDF (25/56 Pages) Microchip Technology – USB 2.0 Hub and Flash Media Card Controller Combo

USB2642
7.4.2.9 9Ch-9Fh: Attribute Byte Descriptions
Byte
0
1
2
3
Name
ATT_LB
ATT_HLB
ATT_LHB
ATT_HB
Bit
Number
3:0
4
Description
Always read as 0
Inquire Manufacturer and Product ID Strings
1 : use the Inquiry Manufacturer and Product ID Strings.
0 : (default) - use the USB Descriptor Manufacturer and Product ID Strings.
5
Always read as 0
6
Reverse SD Card Write Protect Sense
1 : (default) - SD cards will be write protected when SW_nWP is high, and
writable when SW_nWP is low.
0 : SD cards will be write protected when SW_nWP is low, and writable
when SW_nWP is high.
7
Always read as 0
3:0
Always read as 0
4
Activity LED True Polarity
1 : Activity LED to Low True
0 : (default) Activity LED polarity to High True
5
Common Media Insert/Media Activity LED
1 : the activity LED will function as a common media inserted/media access
LED.
0 : (default) the activity LED will remain in its idle state until media is
accessed.
6
Always read as 0
7
Reverse SD2 Card Write Protect Sense
1 : (default) SD cards in LUN 1 will be write protected when SW_nWP is
high, and writable when SW_nWP is low.
0 : SD cards in LUN 1 will be write protected when SW_nWP is low, and
writable when SW_nWP is high.
0
Attach on Card Insert/Detach on Card Removal
1 : attach on Insert is enabled
0 : (default) - attach on Insert is disabled
1
Always read as 0
2
Use LUN Power Configuration
1 : custom LUN Power Configuration stored in the NVSTORE is used
0 : (default) - default LUN Power Configuration is used.
7:3
Always read as 0
7:0
Always read as 0
 2014-2015 Microchip Technology Inc.
DS00001578C-page 25