SMSC USB2524 - Manual (Page 37)

USB MultiSwitch TM Hub
Datasheet
SMSC USB2524 37 Revision 1.91 (08-22-07)
DATASHEET
7.1.4.56 Register EEh: Port Assign Interface Configuration 7B (Reset = 0x00)
7.1.4.57 Register EFh: Port Assign Interface Configuration 7C (Reset = 0x00)
7.1.4.58 Register F0h: Port Assign Interface Configuration 7D (Reset = 0x00)
7.1.4.59 Register F1h: Port Assignment 1 & 2 (Reset = 0x00)
BIT
NUMBER BIT NAME DESCRIPTION
7:0 PORT_INT_7B Port Assign Interface 7B: 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’
to
‘1111’
Reserved, will default to ‘0001’ value
Bit [3:0] = ‘0000’ Port 3 is unassigned
‘0001’ Port 3 owned by UP1
‘0010’ Port 3 owned by UP2
‘0011’
to
‘1111’
Reserved, will default to ‘0001’ value
BIT
NUMBER BIT NAME DESCRIPTION
7:0 PORT_INT_7C Reserved, always = ‘0’.
BIT
NUMBER BIT NAME DESCRIPTION
7:0 PORT_INT_7D Reserved, always = ‘0’.
BIT
NUMBER BIT NAME DESCRIPTION
7:0 PORT_ASSIGN_12 Port 1 & 2 Assignment to upstream host port. Determines which upstream port
“owns” each of the downstream ports
Bit [7:4] = ‘0000’ Port 2 is unassigned
‘0001’ Port 2 owned by UP1
‘0010’ Port 2 owned by UP2
‘0011’
to
‘1111’
Reserved, will default to ‘0001’ value
Bit [3:0] = ‘0000’ Port 1 is unassigned
‘0001’ Port 1 owned by UP1
‘0010’ Port 1 owned by UP2
‘0011’
to
‘1111’
Reserved, will default to ‘0001’ value