USB2524-ABZJ Standard Microsystems (SMSC), USB2524-ABZJ Datasheet - Page 38

• Manufacturer Part Number: USB2524-ABZJ
• Manufacturer: Standard Microsystems (SMSC)

Specifications of USB2524-ABZJ

• Lead Free Status / RoHS Status: Compliant

Revision 1.91 (08-22-07)
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, always = ‘0’.
PORT_ASSIGN_7
PORT_LOCKOUT
BIT NAME
BIT NAME
BIT NAME
BIT NAME
“owns” each of the downstream ports
Reserved, always = ‘0’.
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, always = ‘0’.
Bit 6= Reserved, always = ‘0’.
Bit 5= Reserved, always = ‘0’.
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
‘0001’ Port 3 owned by UP1
‘0010’ Port 3 owned by UP2
‘0011’
‘0011’
‘1111’
‘1111’
to
to
38
Reserved, will default to ‘0001’ value
Reserved, will default to ‘0001’ value
DESCRIPTION
DESCRIPTION
DESCRIPTION
DESCRIPTION
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