USB2524-ABZJ Standard Microsystems (SMSC), USB2524-ABZJ Datasheet - Page 29

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

Specifications of USB2524-ABZJ

• Lead Free Status / RoHS Status: Compliant

USB MultiSwitch
Datasheet
SMSC USB2524
7.1.4.25
7.1.4.26
7.1.4.27
NUMBER
NUMBER
NUMBER
BIT
BIT
BIT
7:0
7:0
7:0
Register 92h-CFh: Serial String (Reset = 0x00)
Register D0h: Port Interface Delay Timer (Reset = 0x00)
Register D1h: Port Assign Interface Configuration 0A (Reset = 0x00)
TM
Hub
PORT_INT_0A
BIT NAME
BIT NAME
BIT NAME
SER_STR
PRTDT
Port Assign Interface 0A: Determines the configuration of the hardware
interface configuration for the assignment of ports 1 & 2 to upstream hosts.
Serial String, UNICODE UTF-16LE per USB 2.0 Specification
Maximum string length is 31 characters (62 Bytes)
Note:
Port Delay Timer: A 0-255 bit value that represents a delay of 0-255ms from
the time a state change is detected on the PRT_ASSIGN[3:0] pins until the
internal logic begins the port switching process for the affected port (or ports)
to a different upstream host.
Note:
Bit [7:4] = ‘0000’ Port 2 is unassigned
Bit [3:0] = ‘0000’ Port 1 is unassigned
The String consists of individual 16 Bit UNICODE UTF-16LE
characters. The Characters will be stored starting with the LSB at the
least significant address and the MSB at the next 8-bit location
(subsequent characters must be stored in sequential contiguous
address in the same LSB, MSB manner). Some EEPROM
programmers may transpose the MSB and LSB, thus reversing the
Byte order. Please pay careful attention to the Byte ordering or your
selected programming tools.
This register effectively creates a programmable debounce circuit for
mechanical switches that may be connected to the PRT_ASSIGN[3:0]
interface pins.
DATASHEET
‘0001’ Port 2 owned by UP1
‘0010’ Port 2 owned by UP2
‘0001’ Port 1 owned by UP1
‘0010’ Port 1 owned by UP2
‘0011’
‘0011’
‘1111’
‘1111’
to
to
29
Reserved, will default to ‘0001’ value
Reserved, will default to ‘0001’ value
DESCRIPTION
DESCRIPTION
DESCRIPTION
Revision 1.91 (08-22-07)