USB2660 Standard Microsystems Corp., USB2660 Datasheet - Page 38

• Manufacturer Part Number: USB2660
• Description: Ultra Fast Usb 2.0 Hub And Multi-format Flash Media Controller With Dual Sd Interfaces
• Manufacturer: Standard Microsystems Corp.

Revision 1.0 (06-09-09)
8.4.2
8.4.2.1
8.4.2.2
BYTE
FET
BYTE
2
3
0
1
2
3
1:0
MS_PWR_HB
MS_PWR_LB
FET Lo Byte
FET Hi Byte
ATT_LHB
ATT_HB
A0h-A7h: Device Power Configuration
The USB2660/USB2660i has two internal FETs which can be utilized for card power. For information
about the other internal FET, please see
Power Configuration," on page
settings are stored in NVSTORE and provide the following features:
1. A card can be powered by an external FET or by an internal FET.
2. The power limit can be set to 100 mA or 200 mA (Default) for the internal FET.
Each media uses two bytes to store its device power configuration. Bit 3 selects between internal or
external card power FET options. For internal FET card power control, bits 0 through 2 are used to
set the power limit. The “Device Power Configuration” bits are ignored unless the “Enable Device
Power Configuration” bit is set. See
page
A0h-A1h: Memory Stick Device Power Configuration
A2h-A3h: Not Applicable
NAME
BYTE
TYPE
Not Applicable
37.
NAME
BIT
7:3
6:0
1
2
7
0
BITS
3:0
3:0
7:4
7:4
Ultra Fast USB 2.0 Hub and Multi-Format Flash Media Controller with Dual SD Interfaces
Not applicable.
Attach on Card Insert / Detach on Card Removal
‘1’ - Attach on Insert is enabled.
‘0’ (default) - Attach on Insert is disabled.
Always reads ‘0’.
Enable Device Power Configuration
‘1’ - Custom Device Power Configuration stored in the NVSTORE is used.
‘0’ (default) - Default Device Power Configuration is used.
Always reads ‘0’.
Always reads ‘0’.
xD Player Mode
Low Nibble
High Nibble
Low Nibble
High Nibble
52. This section describes the default internal configuration. The
BIT TYPE
DATASHEET
Section 8.4.1.19, "9Ch-9Fh: Attribute Byte Descriptions," on
Section 8.4.5.10, "14Ch-14Dh: Second Secure Digital Device
38
0000b Disabled
0000b Disabled
0001b External FET enabled
1000b Internal FET with 100 mA power limit
1010b Internal FET with 200 mA power limit
0000b Disabled
DESCRIPTION
DESCRIPTION
DESCRIPTION
SMSC USB2660/USB2660i
Datasheet