USB MultiSwitchTM Hub
Datasheet
7.1.4.40
Register DEh: Port Assign Interface Configuration 3B (Reset = 0x00)
BIT
NUMBER
BIT NAME
DESCRIPTION
7:0
PORT_INT_3B
Port Assign Interface 3B: Determines the configuration of the hardware
interface configuration for the assignment of ports 3 & 4 to upstream hosts.
Bit [7:4] = ‘0000’ Port 4 is unassigned
‘0001’ Port 4 owned by UP1
‘0010’ Port 4 owned by UP2
‘0011’ Reserved, will default to ‘0001’ value
to
‘1111’
Bit [3:0] = ‘0000’ Port 3 is unassigned
‘0001’ Port 3 owned by UP1
‘0010’ Port 3 owned by UP2
‘0011’ Reserved, will default to ‘0001’ value
to
‘1111’
7.1.4.41
Register DFh: Port Assign Interface Configuration 3C (Reset = 0x00)
BIT
NUMBER
BIT NAME
DESCRIPTION
7:0
PORT_INT_3C
Reserved, always = ‘0’.
7.1.4.42
Register E0h: Port Assign Interface Configuration 3D (Reset = 0x00)
BIT
NUMBER
BIT NAME
DESCRIPTION
7:0
PORT_INT_3D
Reserved, always = ‘0’.
7.1.4.43
Register E1h: Port Assign Interface Configuration 4A (Reset = 0x00)
BIT
NUMBER
BIT NAME
DESCRIPTION
7:0
PORT_INT_4A
Port Assign Interface 4A: Determines the configuration of the hardware
interface configuration for the assignment of ports 1 & 2 to upstream hosts.
Bit [7:4] = ‘0000’ Port 2 is unassigned
‘0001’ Port 2 owned by UP1
‘0010’ Port 2 owned by UP2
‘0011’ Reserved, will default to ‘0001’ value
to
‘1111’
Bit [3:0] = ‘0000’ Port 1 is unassigned
‘0001’ Port 1 owned by UP1
‘0010’ Port 1 owned by UP2
‘0011’ Reserved, will default to ‘0001’ value
to
‘1111’
SMSC USB2524
Revision 1.91 (08-22-07)
DATA3S3HEET
SMSC [ SMSC CORPORATION ]
