USB2503-HZH Standard Microsystems Corp., USB2503-HZH Datasheet - Page 33

• Manufacturer Part Number: USB2503-HZH
• Description: Interface, Integrated USB2.0 Compatible 3-Port Hub
• Manufacturer: Standard Microsystems Corp.

Integrated USB2.0 Compatible 3-Port Hub
Datasheet
SMSC USB2503
5.6.1.2
NAME
RESET_N
t1
t2
t3
t4
t5
t6
t7
VSS
Hardware
asserted
reset
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_N for EEPROM Configuration
Note: 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.
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
+
t4
t3
28
Upstream
Attach
USB
MIN
100
1
USB Reset
recovery
t5
undefined
TYP
2.0
t6
Idle
MAX
99.5
500
100
Revision 1.3 (08-24-04)
5
t7
completion
response
request
Start
UNITS
msec
msec
msec
msec
msec
µsec
µsec