lan9500 Standard Microsystems Corp., lan9500 Datasheet - Page 17

• Manufacturer Part Number: lan9500
• Description: Lan9500/lan9500i Hi-speed Usb 2.0 To 10/100 Ethernet Controller
• Manufacturer: Standard Microsystems Corp.

Hi-Speed USB 2.0 to 10/100 Ethernet Controller
Datasheet
SMSC LAN9500/LAN9500i
NUM PINS
NUM PINS
1
1
1
1
1
1
1
1
1
1
External USB
Bias Resistor.
+1.8V Supply
Crystal Input
Ethernet TX
Ethernet TX
Ethernet RX
Ethernet RX
USB PLL
Data Out
Data Out
DMINUS
Negative
Negative
Positive
Positive
DPLUS
Data In
Data In
NAME
Output
NAME
Crystal
USB
USB
VDD18USBPLL
USBRBIAS
SYMBOL
SYMBOL
USBDM
USBDP
RXN
RXP
TXN
TXP
XO
XI
Table 2.6 Ethernet PHY Pins
Table 2.5 USB Pins
DATASHEET
BUFFER
BUFFER
TYPE
OCLK
TYPE
ICLK
AIO
AIO
AIO
AIO
AIO
AIO
AI
P
17
USB DMINUS
Note:
USB DPLUS
Note:
External USB Bias Resistor: Used for setting
HS transmit current level and on-chip termination
impedance. Connect to an external 12K 1.0%
resistor to ground.
USB PLL +1.8V Supply: This pin must be
connected to VDD18CORE for proper operation.
Refer to the LAN9500/LAN9500i reference
schematic for additional connection information.
Crystal Input: External 25 MHz crystal input.
Note:
Crystal Output: External 25 MHz crystal output.
Ethernet Transmit Data Out Negative: The
transmit data outputs may be swapped internally
with receive data inputs when Auto-MDIX is
enabled.
Ethernet Transmit Data Out Positive: The
transmit data outputs may be swapped internally
with receive data inputs when Auto-MDIX is
enabled.
Ethernet Receive Data In Negative: The
receive data inputs may be swapped internally
with transmit data outputs when Auto-MDIX is
enabled.
Ethernet Receive Data In Positive: The receive
data inputs may be swapped internally with
transmit data outputs when Auto-MDIX is
enabled.
The functionality of this pin may be
swapped to USB DPLUS via the
PORT_SWAP configuration strap.
The functionality of this pin may be
swapped to USB DMINUS via the
PORT_SWAP configuration strap.
This signal can also be driven by a
single-ended clock oscillator. When this
method is used, XO should be left
unconnected
DESCRIPTION
DESCRIPTION
Revision 1.4 (07-07-08)