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AX88178 数据表(PDF) 7 Page - ASIX Electronics Corporation

部件名 AX88178
功能描述  USB to 10/100/1000 Gigabit Ethernet/HomePNA Controller
PDF  35 Pages
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制造商  ASIX [ASIX Electronics Corporation]
网页  http://www.asix.com.tw
标志 ASIX - ASIX Electronics Corporation

AX88178 数据表(HTML) 7 Page - ASIX Electronics Corporation

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ASIX ELECTRONICS CORPORATION
7
AX88178 L
USB to 10/100/1000 Gigabit Ethernet/HomePNA Controller
FORCEFS_N
I3/PU
15
Force USB Full Speed (active low). For normal operation, user should
keep this pin NC to enable USB High Speed handshaking process to
decide the speed of USB bus. Setting this pin low sets the device to
operate at Full speed mode only and disables Chirp K (HS
handshaking process).
LED
O3
125
LED indicator: When USB bus is in Full speed, this pin drives high
continuously. When USB bus is in High speed, this pin drives low
continuously. This pin drives high and low in turn (blinking) to
indicate TX data transfer going on whenever the host controller sends
bulk out data transfer.
USB_SPEED_LE
D
O3
126
USB bus speed LED indicator. When USB bus is in Full speed, this
pin drives high continuously. When USB bus is in High speed, this
pin drives low continuously.
TESTSPEEDUP
I3/PD
13
Test pin. For normal operation, user should keep this pin NC.
HS_TEST_MODE
I3/PD
42
Test pin. For normal operation, user should keep this pin NC.
SCAN_TEST
I3/PD
43
Test pin. For normal operation, user should keep this pin NC.
SCAN_ENABLE
I3/PD
44
Test pin. For normal operation, user should keep this pin NC.
CLK60EXT
I3/PD
45
Test pin. For normal operation, user should keep this pin NC.
CLKSEL
I3/PD
46
Test pin. For normal operation, user should keep this pin NC.
DB
I2
65
Debug pin. For normal operation, user should connect to AVDDK
through a pulled-up resistor.
On-chip Regulator Pins
INT_REGULATO
R_EN
I
20
On-chip 3.3V to 2.5V voltage regulator enable. Connect this pin to
VDDAH directly to enable on-chip regulator. Connect this pin to
GNDAH to disable on-chip regulator.
VDDAH
P
22
3.3V Power supply to on-chip 3.3V to 2.5V voltage regulator.
GNDAH
P
23
Ground pin of on-chip 3.3V to 2.5V voltage regulator.
V25
P
21
2.5V voltage output of on-chip 3.3V to 2.5V voltage regulator.
Power and Ground Pins
VDDK
P
16, 24, 74,
99, 118
Digital Core Power. 2.5V.
VDD2
P
80, 86, 123 Digital I/O Power. 2.5V.
VDD3
P
8, 19, 41,
97, 128
Digital I/O Power. 3.3V.
GND
P
7, 17, 18,
25, 40, 75,
81, 87, 98,
100, 119,
124, 127
Digital Ground.
AVDDK
P
49, 53, 57,
64, 66, 68
Analog Core Power. 2.5V.
AVDD3
P
28, 37, 39 Analog I/O Power. 3.3V.
AGND
P
29, 33, 38,
50, 54, 55,
60, 63, 67,
69
Analog Ground.



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