Filter
Top Products
2-Port USB 2.0 Hub Controller
Datasheet
Revision 2.3 (08-27-07) 20 SMSC USB2502
DATASHEET
5.2.3.1 EEPROM Offset 1:0(h) - Vendor ID
5.2.3.2 EEPROM Offset 3:2(h) - Product ID
Config Data
Byte 1
6 1 88 0C Configuration data byte #1 for Hub options.
Config Data
Byte 2
7 1 90 90 Configuration data byte #2 for Hub options.
Non
Removable
Device
8 1 00 00 Defines the ports that contain attached
devices (this is used only when Hub is part of
a compound device).
Port Disable
Self-Powered
9 1 00 00 Selects the ports that will be permanently
disabled
Port Disable
Bus-Powered
A 1 00 00 Selects the ports that will be permanently
disabled
Max Power
Self-Powered
B 1 01 01 Max Current for this configuration (expressed
in 2mA units).
Max Power
Bus-Powered
C 1 64 64 Max Current for this configuration (expressed
in 2mA units).
Hub Controller
Max Current
Self-Powered
D 1 01 01 Max Current (expressed in 2mA units).
Hub Controller
Max Current
Bus-Powered
E 1 64 64 Max Current (expressed in 2mA units).
Power-On
Time
F 1 32 32 Time until power is stable.
BIT
NUMBER BIT NAME DESCRIPTION
15:8 VID_MSB Most Significant Byte of the Vendor ID.
7:0 VID_LSB Least Significant Byte of the Vendor ID.
BIT
NUMBER BIT NAME DESCRIPTION
15:8 PID_MSB Most Significant Byte of the Product ID.
7:0 PID_LSB Least Significant Byte of the Product ID.
Table 5.1 User-Defined Descriptor Data (continued)
FIELD
BYTE
MSB:
LSB
SIZE
(BYTES)
DEFAULT
CFG
SELF
(HEX)
DEFAULT
CFG
BUS
(HEX) DESCRIPTION