AX88178
USB to 10/100/1000 Gigabit Ethernet/HomePNA Controller
7.3 Power-up Sequence
At power-up, AX88178 requires the VDD3/AVDD3 power supply to rise to nominal operating voltage within Trise3 and
the VDDK/AVDD2/AVDDK power supply to rise to nominal operating voltage within Trise2.
Trise3
3.3V
VDD3/AVDD3
0V
Tdelay32
Trise2
2.5V
VDDK/VDD2/AVDDK
0V
Symbol
Trise3
Trise2
Parameter
3.3V power supply rise time
2.5V power supply rise time
Condition
From 0V to 3.3V
From 0V to 2.5V
Min
-
-
Typ
Max
10
10
Unit
ms
ms
-
-
-
Tdelay32 3.3V rise to 2.5V rise time delay
-5
5
ms
7.4 AC Timing Characteristics
7.4.1 Clock Timing
7.4.1.1 XIN12M
TP_XIN12M
TH_XIN12M
TL_XIN12M
VIH
VIL
TR_XIN12M
Parameter
TP_XIN12M XIN12M clock cycle time
TH_XIN12M XIN12M clock high time
TL_XIN12M XIN12M clock low time
TR_XIN12M XIN12M rise time
TF_XIN12M
Symbol
Condition
Min
Typ
83.33
41.6
41.6
-
Max
-
-
-
1.0
1.0
Unit
ns
ns
ns
ns
-
-
-
-
-
VIL (max) to VIH (min)
VIH (min) to VIL (max)
TF_XIN12M XIN12M fall time
-
ns
28
ASIX ELECTRONICS CORPORATION
ASIX [ ASIX ELECTRONICS CORPORATION ]
