USB2503-HZH Standard Microsystems Corp., USB2503-HZH Datasheet - Page 19

• Manufacturer Part Number: USB2503-HZH
• Description: Interface, Integrated USB2.0 Compatible 3-Port Hub
• Manufacturer: Standard Microsystems Corp.

Integrated USB2.0 Compatible 3-Port Hub
Datasheet
SMSC USB2503
5.2.3.2
5.2.3.3
5.2.3.4
NUMBER
NUMBER
NUMBER
15:8
15:8
BIT
BIT
BIT
7:0
7:0
2:1
7
6
5
4
3
EEPROM Offset 3:2(h) - Product ID
EEPROM Offset 5:4(h) - Device ID
EEPROM Offset 6(h) - CONFIG_BYTE_1
SELF_BUS_PWR
CURRENT_SNS
EOP_DISABLE
MTT_ENABLE
HS_DISABLE
PORT_IND
BIT NAME
BIT NAME
BIT NAME
PID_MSB
DID_MSB
PID_LSB
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.
Port Indicator Support: Indicates implementation of LED indicators
0 = No LED indicators.
1 = LED indicators.
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!)
Multi-TT enable: Enables one transaction translator per port operation.
0 = single TT for all ports.
1 = one TT per port (multiple TT’s supported)
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 on a port-by-port
basis, or ganged.
00 = Ganged sensing (all ports together). (Default for self-power)
01 = Individual port-by-port.
1x = Over current sensing not supported. (may be used with Bus-Powered
configurations only!, and is the default for bus-power)
Most Significant Byte of the Product ID.
Most Significant Byte of the Device ID.
Least Significant Byte of the Product ID.
Least Significant Byte of the Device ID.
14
DESCRIPTION
DESCRIPTION
DESCRIPTION
Revision 1.3 (08-24-04)