Datasheet – SMSC USB20H04 User Manual
Page 25
Advertising
4-Port USB 2.0 Controller
Datasheet
SMSC USB20H04
Page 25
Revision 1.63 (03-30-07)
DATASHEET
8.4.1.1
SMBus Configuration Timing
Figure 8.3 - Timing for Configuration from SMBus
Table 8.7 - Time Values to Configure from SMBus
NAME DESCRIPTION
MIN
TYP
MAX
UNITS
T1 RESET_N
asserted
100
nsec
T2
USB20H04 recovery/stabilization – until first
external SCK/SCL activity
16 32
nsec
T3
Implementation dependent load time
T4
Configuration finished to Hub enabled
35
70
nsec
RESET_N
t1
t2
t3
GND
Hardware
Reset Asserted
CS/EE_SEL
& SMB_SEL_N
strapping
options read
First External
SCK/SCL
Activity
Configuration
Finished
SCK/SCL
t4
Hub Function
Enable
Advertising