
ASIX ELECTRONICS CORPORATION
26
AX88772A/AX88172A
Low-pin-count
USB 2.0 to 10/100M Fast Ethernet Controller
9.2 Power Consumption
Symbol
I
VCCK
I
VCC18A
I
VCC3IO
I
VCC33A
Description
Conditions
Operating at Ethernet
100Mbps full duplex
mode and USB High
speed mode
Min
Typ
47.5
39.3
16.6
35.4
Max Unit
Current Consumption of VCCK
Current Consumption of VCC18A
Current Consumption of VCC3IO
Current Consumption of VCC33A_H +
VCC33A_PLL + VCC33A_PLL
Current Consumption of VCCK
Current Consumption of VCC18A
Current Consumption of VCC3IO
Current Consumption of VCC33A_H +
VCC33A_PLL + VCC33A_PLL
Current Consumption of VCCK
Current Consumption of VCC18A
Current Consumption of VCC3IO
Current Consumption of VCC33A_H +
VCC33A_PLL + VCC33A_PLL
Current Consumption of VCCK
Current Consumption of VCC18A
Current Consumption of VCC3IO
Current Consumption of VCC33A_H +
VCC33A_PLL + VCC33A_PLL
Current Consumption of VCCK
Current Consumption of VCC18A
Current Consumption of VCC3IO
Current Consumption of VCC33A_H +
VCC33A_PLL + VCC33A_PLL
Current Consumption of VCCK
mA
mA
mA
mA
I
VCCK
I
VCC18A
I
VCC3IO
I
VCC33A
44.3
39.3
12.9
28.7
mA
mA
mA
mA
Operating at Ethernet
100Mbps full duplex
mode and USB Full
speed mode
I
VCCK
I
VCC18A
I
VCC3IO
I
VCC33A
19.3
6.3
8.3
38.8
mA
mA
mA
mA
Operating at Ethernet
10Mbps full duplex
mode and USB High
speed mode
I
VCCK
VCC18A
I
VCC3IO
I
VCC33A
14.9
6.2
4.9
32.3
mA
mA
mA
mA
Operating at Ethernet
10Mbps full duplex
mode and USB Full
speed mode
I
VCCK
I
VCC18A
I
VCC3IO
I
VCC33A
2.0
49.3
0.7
0.2
μ
A
μ
A
mA
mA
Suspend
(the embedded Ethernet
PHY is powered down)
I
VCCK
19
mA
I
VCC18A
I
VCC3IO
I
VCC33A
Current Consumption of VCC18A
Current Consumption of VCC3IO
Current Consumption of VCC33A_H +
VCC33A_PLL + VCC33A_PLL
Current Consumption of VCCK
Current Consumption of VCC18A
Current Consumption of VCC3IO
Current Consumption of VCC33A_H +
VCC33A_PLL + VCC33A_PLL
Power consumption of
AX88772A/AX88172A chip only
3.4
8.5
30.9
mA
mA
mA
AX88172A in USB
Full speed, Rev-MII
operation and internal
PHY power save
(BMCR[11] bit = 1)
I
VCCK
I
VCC18A
I
VCC3IO
I
VCC33A
22
3.4
11.5
36.9
mA
mA
mA
mA
AX88172A in USB
High speed, Rev-MII
operation and internal
PHY power save
(BMCR[11] bit = 1)
1.8V
3.3V
(Excluding VCC3R3)
Total of 3.3V
(Including VCC3R3
regulator supplies 1.8V to
VCCK and VCC18A)
100
70
mA
mA
I
DEVICE
I
SYSTEM
Power consumption of AX88x72A demo
board
220
mA
Table 3
: Power consumption