USB2504-JD Standard Microsystems Corp., USB2504-JD Datasheet - Page 35

• Manufacturer Part Number: USB2504-JD
• Description: Interface, Integrated USB2.0 Compatible 4-Port Hub
• Manufacturer: Standard Microsystems Corp.

Integrated USB2.0 Compatible 4-Port Hub
Datasheet
SMSC USB2504
5.6.1.2
NAME
NAME
RESET_N
t6
t7
t8
t1
t2
t3
t4
t5
t6
t7
VSS
Hardware
asserted
Host acknowledges attach and signals USB
Reset.
USB Idle.
Completion time for requests (with or without data
stage).
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).
Note: When in Bus-Powered mode, the Hub and its associated circuitry must not consume more than
RESET_N for EEPROM Configuration
Note: When in Bus-Powered mode, the Hub and its associated circuitry must not consume more than
Table 5.5 Reset_N Timing for Default/Strap Option Mode (continued)
100mA from the upstream USB power source during t1+t5.
100mA from the upstream USB power source during t4+t5+t6+t7.
Read Strap
t1
Options
DESCRIPTION
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
29
Upstream
Attach
USB
MIN
MIN
100
100
1
USB Reset
recovery
t5
undefined
undefined
TYP
TYP
2.0
t6
Idle
MAX
MAX
99.5
500
100
Revision 1.3 (06-28-04)
5
5
t7
completion
response
request
Start
UNITS
UNITS
msec
msec
msec
msec
msec
msec
msec
msec
µsec
µsec