USB2503-HZH Standard Microsystems Corp., USB2503-HZH Datasheet - Page 28

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

Revision 1.3 (08-24-04)
5.3.9.9
5.3.9.10
5.3.9.11
NUMBER
NUMBER
NUMBER
BIT
BIT
BIT
5:4
2:0
7:0
7:0
7
6
3
Register 08h: Configuration Data Byte 2 (Reset = 0x00)
Register 09h: Non-Removable Device (Reset = 0x00)
Register 0Ah: Port Disable For Self Powered Operation (Reset = 0x00)
PORT_DIS_SP
COMPOUND
NR_DEVICE
OC_TIMER
BIT NAME
BIT NAME
BIT NAME
DYNAMIC
Reserved
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.
Reserved
OverCurrent Timer: Over Current Timer delay.
00 = 0.1ms
01 = 2ms
10 = 4ms
11 = 6ms
Compound Device: Designates if Hub is part of a compound device.
0 = No.
1 = Yes, Hub is part of a compound device.
Reserved
Non-Removable Device: Indicates which port(s) include non-
removable devices. ‘0’ = port is removable, ‘1’ = port is non-
removable.
Bit 7= Reserved
Bit 6= Reserved
Bit 5= Reserved
Bit 4= Reserved.
Bit 3= 1; Port 3 non-removable.
Bit 2= 1; Port 2 non-removable.
Bit 1= 1; Port 1 non removable.
Bit 0 is Reserved, always = ‘0’.
Port Disable Self-Powered: Disables 1 or more contiguous ports. ‘0’ = port
is available, ‘1’ = port is disabled.
Bit 7= Reserved
Bit 6= Reserved
Bit 5= Reserved
Bit 4= Reserved1
Bit 3= 1; Port 3 is disabled.
Bit 2= 1; Port 2 is disabled.
Bit 1= 1; Port 1 is disabled.
Bit 0 is Reserved, always = ‘0’
23
DESCRIPTION
DESCRIPTION
DESCRIPTION
Integrated USB2.0 Compatible 3-Port Hub
SMSC USB2503
Datasheet