USB2502-AEZG Standard Microsystems (SMSC), USB2502-AEZG Datasheet - Page 21

• Manufacturer Part Number: USB2502-AEZG
• Manufacturer: Standard Microsystems (SMSC)

Specifications of USB2502-AEZG

• Lead Free Status / RoHS Status: Compliant

2-Port USB 2.0 Hub Controller
Datasheet
SMSC USB2502
5.2.3.3
5.2.3.4
5.2.3.5
NUMBER
NUMBER
NUMBER
15:8
BIT
BIT
BIT
7:0
2:1
7
6
5
4
3
0
7
6
EEPROM Offset 5:4(h) - Device ID
EEPROM Offset 6(h) - CONFIG_BYTE_1
EEPROM Offset 7(h) - CONFIG_BYTE_2
SELF_BUS_PWR
CURRENT_SNS
EOP_DISABLE
HS_DISABLE
BIT NAME
BIT NAME
BIT NAME
DYNAMIC
DID_MSB
Reserved
Reserved
Reserved
Reserved
DID_LSB
Self or Bus Power: Selects between Self- and Bus-Powered operation.
0 = Bus-Powered operation. (BUS Default)
1 = Self-Powered operation. (SELF Default)
Note: If Dynamic Power Switching is enabled, this bit is ignored and the
SELF_PWR pin is used to determine if the hub is operating from self or bus
power.
Reserved
High Speed Disable: Disables the capability to attach as either a High/Full-
speed device, and forces attachment as Full-speed only i.e. (no High-Speed
support).
0 = High-/Full-Speed. (Default)
1 = Full-Speed-Only (High-Speed disabled!)
Reserved
EOP Disable: Disables EOP generation at EOF1 when no downstream
directed traffic is in progress.
0 = EOP generation at EOF1 is enabled.
1 = EOP generation at EOF1 is disabled, (normal operation). (Default)
Over Current Sense: Indicates whether current sensing is ganged.
00 = Ganged sensing (all ports together). (Default for self-power)
01 = Reserved
1x = Over current sensing not supported. (may be used with Bus-Powered
configurations only!, and is the default for bus-power)
Reserved
Dynamic Power Enable: Controls the ability for the Hub to transition to Bus-
Powered operation if the local power source is removed (can revert back to
Self-Power if local power source is restored).
0 = No Dynamic auto-switching.
1 = Dynamic Auto-switching capable.(Default)
Reserved
Most Significant Byte of the Device ID.
Least Significant Byte of the Device ID.
DATASHEET
21
DESCRIPTION
DESCRIPTION
DESCRIPTION
Revision 2.3 (08-27-07)