參數(shù)資料
型號: AX88772_07
廠商: ASIX Electronics Corporation
英文描述: USB to 10/100 Fast Ethernet/HomePNA Controller
中文描述: USB至10/100快速以太網(wǎng)/電話線網(wǎng)絡(luò)控制器
文件頁數(shù): 35/43頁
文件大小: 318K
代理商: AX88772_07
ASIX ELECTRONICS CORPORATION
35
AX88772
USB to 10/100 Fast Ethernet/HomePNA Controller
8.2 Power Consumption
8.2.1 Internal Phy
Symbol
I
VDDK2
Current consumption of VDDK/VDD2,
2.5V
I
VDD3
Current consumption of VDD3, 3.3V
I
AVDDK
Current consumption of AVDDK, 2.5V
I
AVDD3
Current consumption of AVDD3, 3.3V
Θ
JC
Thermal resistance of junction to case
Θ
JA
Thermal resistance of junction to ambient Still air
Description
Condition
Min
-
Typ
25.4
Max Units
-
mA
-
-
-
< 1
69.3
51.1
16.5
46
-
-
-
mA
mA
mA
°C/W
°C/W
Operating at Ethernet
100Mbps full duplex
mode and USB High
speed mode
8.2.2 Operating through MII Interface with Internal Ethernet PHY Power-down
Symbol
Description
I
VDDK2
Current consumption of VDDK/VDD2,
2.5V
I
VDD3
Current consumption of VDD3, 3.3V
I
AVDDK
Current consumption of AVDDK, 2.5V
I
AVDD3
Current consumption of AVDD3, 3.3V
Condition
Min
-
Typ
25.4
Max Units
-
mA
-
-
-
< 1
< 2
51.1
-
-
-
mA
mA
mA
Operating in Ethernet
100Mbps full duplex
mode
through
interface and in USB
High speed mode. The
embedded
PHY
is
down by IPPD bit in
Software
Register
MII
Ethernet
powered
Reset
8.3 Power-up Sequence
At power-up, AX88772 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.
Symbol
Parameter
Condition
T
rise3
3.3V power supply rise time
From 0V to 3.3V
T
rise2
2.5V power supply rise time
From 0V to 2.5V
T
delay32
3.3V rise to 2.5V rise time delay
Min
-
-
-5
Typ
-
-
-
Max
10
10
5
Unit
ms
ms
ms
0V
3.3V
Trise3
0V
2.5V
Trise2
Tdelay32
VDDK/VDD2/AVDDK
VDD3/AVDD3
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