USB2503-HZH Datasheet, PDF (29/43 Pages) SMSC Corporation – Integrated USB 2.0 Compatible 3-Port Hub

Integrated USB 2.0 Compatible 3-Port Hub
Datasheet
5.3.9.10
Register 09h: Non-Removable Device (Reset = 0x00)
BIT
NUMBER
7:0
BIT NAME
NR_DEVICE
DESCRIPTION
Non-Removable Device: Indicates which port(s) include non-removable devic-
es. ‘0’ = port is removable, ‘1’ = port is non-removable.
Bit 7= Reserved
Bit 6= Reserved
Bit 5= Reserved
Bit 4= 1; 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’.
5.3.9.11 Register 0Ah: Port Disable For Self Powered Operation (Reset = 0x00)
BIT
NUMBER
7:0
BIT NAME
PORT_DIS_SP
DESCRIPTION
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’
5.3.9.12 Register 0Bh: Port Disable For Bus Powered Operation (Reset = 0x00)
BIT
NUMBER
7:0
BIT NAME
PORT_DIS_BP
DESCRIPTION
Port Disable Bus-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’
5.3.9.13 Register 0Ch: Max Power For Self Powered Operation (Reset = 0x00)
BIT
NUMBER
BIT NAME
DESCRIPTION
SMSC USB2503/USB2503A
29
DATASHEET
Revision 2.3 (08-27-07)