USB2524 SMSC Corporation, USB2524 Datasheet - Page 38

• Manufacturer Part Number: USB2524
• Description: USB MultiSwitch Hub
• Manufacturer: SMSC Corporation

Revision 1.2 (07-17-06)
7.1.4.60
7.1.4.61
7.1.4.62
7.1.4.63
NUMBER
NUMBER
NUMBER
NUMBER
BIT
BIT
BIT
BIT
7:0
7:0
7:0
7:0
Register F2h: Port Assignment 3 & 4 (Reset = 0x00)
Register F3h: Port Assignment 5 & 6 (Reset = 0x00)
Register F4h: Port Assignment 7 (Reset = 0x00)
Register F5h: Port Lockout (Reset = 0x00)
PORT_ASSIGN_34 Port 3 & 4 Assignment to upstream host port. Determines which upstream port
PORT_ASSIGN_56 Reserved
PORT_ASSIGN_7
PORT_LOCKOUT
BIT NAME
BIT NAME
BIT NAME
BIT NAME
“owns” each of the downstream ports
Reserved
Port Lockout: Locks a port to the currently assigned upstream port, and doesn’t
allow the port to be re-assigned.
‘0’ = port is available to be switched
‘1’ = port is locked to the assigned port.
Bit 7= Reserved
Bit 6= Reserved
Bit 5= Reserved
Bit 4= 1; Port 4 is locked.
Bit 3= 1; Port 3 is locked.
Bit 2= 1; Port 2 is locked.
Bit 1= 1; Port 1 is locked.
Bit 0 is Reserved, always = ‘0’
Bit [7:4] = ‘0000’ Port 4 is unassigned
Bit [3:0] = ‘0000’ Port 3 is unassigned
DATASHEET
‘0001’ Port 4 owned by UP1
‘0010’ Port 4 owned by UP2
‘0011’
‘0001’ Port 3 owned by UP1
‘0010’ Port 3 owned by UP2
‘0011’
‘1111’
‘1111’
to
to
38
Reserved, will default to ‘0001’ value
Reserved, will default to ‘0001’ value
DESCRIPTION
DESCRIPTION
DESCRIPTION
DESCRIPTION
USB MultiSwitch
SMSC USB2524
Datasheet
TM
Hub