USB2660 Standard Microsystems Corp., USB2660 Datasheet - Page 39

• 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.

Ultra Fast USB 2.0 Hub and Multi-Format Flash Media Controller with Dual SD Interfaces
Datasheet
SMSC USB2660/USB2660i
8.4.2.3
8.4.2.4
8.4.2.5
8.4.2.6
FET
FET
BYTE
BYTE
0
1
2
3
0
1
2
3
0
1
SM_PWR_HB
SM_PWR_LB
SD_PWR_HB
SD_PWR_LB
FET Lo Byte
FET Hi Byte
FET Lo Byte
FET Hi Byte
A4h-A5h: Smart Media Device Power Configuration
A6h-A7h: Secure Digital Device Power Configuration
A8h: LED Blink Interval
A9h: LED Blink Duration
TYPE
TYPE
LED_BLK_DUR
LED_BLK_INT
NAME
NAME
BITS
BITS
3:0
3:0
3:0
7:4
7:4
3:0
7:4
7:4
The blink rate is programmable in 50 ms intervals. The high bit (7) indicates
an idle state:
‘0’ - Off
‘1’ - On
The remaining bits (6:0) are used to determine the blink interval up to a max
of 128 x 50 ms.
LED Blink After Access. This byte is used to designate the number of
seconds that the GPIO1 LED will continue to blink after a drive access.
Setting this byte to "05" will cause the GPIO 1 LED to blink for 5 seconds
after a drive access.
Low Nibble
High Nibble
Low Nibble
High Nibble
Low Nibble
High Nibble
Low Nibble
High Nibble
BIT TYPE
BIT TYPE
DATASHEET
39
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
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
DESCRIPTION
Revision 1.0 (06-09-09)