EVB-USB2524 SMSC, EVB-USB2524 Datasheet - Page 48

• Manufacturer Part Number: EVB-USB2524
• Description: BOARD EVAL USB2524 SHARE/SWITCH
• Manufacturer: SMSC
• Series: MultiSwitch™r

Specifications of EVB-USB2524

• Main Purpose: Interface, USB 2.0 Hub
• Embedded: No
• Utilized Ic / Part: USB2524
• Primary Attributes: Quad Port Hub, High Speed (480Mbps), SMBus
• Secondary Attributes: Overcurrent Protection, Port Power Switching, Multi-TT Enabled
• Interface Type: USB
• Operating Supply Voltage: 5 V
• Product: Interface Modules
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With/related Products: USB2524
• Other names: 638-1044

Revision 1.91 (08-22-07)
9.1.1.1
NAME
RESET_N
Strap Pins
t1
t2
t3
t4
t5
t6
t7
t8
VSS
VSS
Hardware
asserted
reset
RESET_N Asserted.
Strap Setup Time
Strap Hold Time.
hub outputs driven to inactive logic states
USB Attach (See
Host acknowledges attach and signals USB
Reset.
USB Idle.
Completion time for requests (with or without data
stage).
RESET_N for Strapping Option Configuration
Note 9.1
Don’t Care
Read Strap
t1
Options
When in Bus-Powered mode, the Hub and its associated circuitry must not consume more
than 100mA from the upstream USB power source during t1+t5.
Figure 9.1 Reset_N Timing for Default/Strap Option Mode
Table 9.1 Reset_N Timing for Default/Strap Option Mode
DESCRIPTION
Note
t2
Valid
t3
9.1)
t4
Don’t Care
Drive Strap
Outputs to
inactive
DATASHEET
levels
t5
48
Upstream
Attach
USB
Driven by Hub if strap is an output.
16.7
16.7
MIN
100
1
USB Reset
recovery
t6
undefined
TYP
1.5
t7
Idle
MAX
1400
100
2.0
USB MultiSwitch
5
t8
completion
response
SMSC USB2524
request
Start
UNITS
Datasheet
msec
msec
msec
msec
μsec
nsec
nsec
μsec
TM
Hub