lan9512 Standard Microsystems Corp., lan9512 Datasheet - Page 13

• Manufacturer Part Number: lan9512
• Description: Usb Hub With Integrated 10/100 Ethernet Controller
• Manufacturer: Standard Microsystems Corp.

USB Hub with Integrated 10/100 Ethernet Controller
Datasheet
SMSC LAN9512
PINS
PINS
NUM
NUM
1
1
1
1
1
1
1
1
7
1
1
USB PLL +1.8V
Data In Positive
Power Supply
Power Supply
External USB
Crystal Output
+3.3V Analog
External PHY
Bias Resistor
Bias Resistor
Ethernet PLL
+1.8V Power
Crystal Input
Ethernet RX
Ethernet RX
Ethernet TX
Ethernet TX
Data Out
Data Out
Negative
Negative
Positive
Data In
Supply
NAME
NAME
VDD18USBPLL
VDD18ETHPLL
USBRBIAS
SYMBOL
SYMBOL
VDD33A
EXRES
RXN
TXN
TXP
RXP
XO
XI
Table 2.4 USB Pins (continued)
Table 2.5 Ethernet PHY Pins
DATASHEET
BUFFER
BUFFER
OCLK
TYPE
TYPE
ICLK
AIO
AIO
AIO
AIO
AI
AI
P
P
P
13
Used for setting HS transmit current level and on-
chip termination impedance. Connect to an
external 12K 1.0% resistor to ground.
Refer to the LAN9512 reference schematics for
additional connection information.
External 25 MHz crystal input.
Note:
External 25 MHz crystal output.
Negative output of the Ethernet transmitter. The
transmit data outputs may be swapped internally
with receive data inputs when Auto-MDIX is
enabled.
Positive output of the Ethernet transmitter. The
transmit data outputs may be swapped internally
with receive data inputs when Auto-MDIX is
enabled.
Negative input of the Ethernet receiver. The receive
data inputs may be swapped internally with
transmit data outputs when Auto-MDIX is enabled.
Positive input of the Ethernet receiver. The receive
data inputs may be swapped internally with
transmit data outputs when Auto-MDIX is enabled.
Refer to the LAN9512 reference schematics for
connection information.
external 12.4K 1.0% resistor to ground.
Refer to the LAN9512 reference schematics for
additional connection information.
Used for the internal bias circuits. Connect to an
This pin can also be driven by a single-
ended clock oscillator. When this method
is used, XO should be left unconnected
DESCRIPTION
DESCRIPTION
Revision 1.0 (04-20-09)