USB2507-ADT Standard Microsystems (SMSC), USB2507-ADT Datasheet - Page 35

• Manufacturer Part Number: USB2507-ADT
• Manufacturer: Standard Microsystems (SMSC)

Specifications of USB2507-ADT

• Operating Temperature (min): 0C
• Operating Temperature Classification: Commercial
• Operating Temperature (max): 70C
• Package Type: TQFP
• Rad Hardened: No
• Lead Free Status / RoHS Status: Compliant

Integrated USB 2.0 Compatible 7-Port Hub
Datasheet
SMSC USB2507
5.6.1.2
NAME
RESET_N
t1
t2
t3
t4
t5
t6
t7
VSS
Hardware
asserted
RESET_N Asserted.
Hub Recovery/Stabilization.
EEPROM Read / Hub Config.
USB Attach (See Note).
Host acknowledges attach and signals USB
Reset.
USB Idle.
Completion time for requests (with or without data
stage).
reset
RESET_N for EEPROM Configuration
Notes:
When in Bus-Powered mode, the Hub and its associated circuitry must not consume more than
100mA from the upstream USB power source during t4+t5+t6+t7.
All Power Supplies must have reached the operating levels mandated in
Parameters", prior to (or coincident with) the assertion of RESET_N.
Read Strap
t1
Options
DESCRIPTION
Figure 5.3 Reset_N Timing for EEPROM Mode
Table 5.6 Reset_N Timing for EEPROM Mode
Read EEPROM
Set Options
t2
+
DATASHEET
t4
t3
35
Upstream
Attach
USB
MIN
100
1
USB Reset
recovery
t5
undefined
TYP
2.0
t6
Idle
Section Chapter 7, "DC
MAX
99.5
500
100
Revision 2.3 (08-27-07)
5
t7
completion
response
request
Start
UNITS
msec
msec
msec
msec
msec
μsec
μsec