lan9512 Standard Microsystems Corp., lan9512 Datasheet - Page 11

• 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
NUM
1
1
1
1
1
1
1
1
1
1
Activity Indicator
Ethernet Speed
Purpose I/O 1
Purpose I/O 2
Purpose I/O 3
Purpose I/O 4
Purpose I/O 5
Purpose I/O 6
Purpose I/O 7
Indicator LED
Ethernet Link
VBUS Power
Auto-MDIX
Upstream
General
General
General
General
General
General
General
Enable
NAME
Detect
Test 1
LED
AUTOMDIX_EN
nLNKA_LED
VBUS_DET
nSPD_LED
SYMBOL
TEST1
GPIO1
GPIO2
GPIO3
GPIO4
GPIO5
GPIO6
GPIO7
Table 2.3 Miscellaneous Pins (continued)
DATASHEET
BUFFER
IS/O12/
IS/O12/
IS/O8/
IS/O8/
IS/O8/
IS/O8/
IS/O8/
IS_5V
TYPE
OD12
OD12
OD12
OD12
(PU)
(PU)
(PU)
(PU)
OD8
(PU)
OD8
(PU)
OD8
(PU)
OD8
(PU)
OD8
(PU)
IS
-
11
This pin is driven low (LED on) when a valid link is
detected. This pin is pulsed high (LED off) for
80mS whenever transmit or receive activity is
detected. This pin is then driven low again for a
minimum of 80mS, after which time it will repeat
the process if TX or RX activity is detected.
Effectively, LED2 is activated solid for a link. When
transmit or receive activity is sensed, LED2 will
function as an activity indicator.
This General Purpose I/O pin is fully programmable
as either a push-pull output, an open-drain output,
or a Schmitt-triggered input.
This pin is driven low (LED on) when the Ethernet
operating speed is 100Mbs, or during auto-
negotiation. This pin is driven high during 10Mbs
operation, or during line isolation.
This General Purpose I/O pin is fully programmable
as either a push-pull output, an open-drain output,
or a Schmitt-triggered input.
This General Purpose I/O pin is fully programmable
as either a push-pull output, an open-drain output,
or a Schmitt-triggered input.
This General Purpose I/O pin is fully programmable
as either a push-pull output, an open-drain output,
or a Schmitt-triggered input.
This General Purpose I/O pin is fully programmable
as either a push-pull output, an open-drain output,
or a Schmitt-triggered input.
This General Purpose I/O pin is fully programmable
as either a push-pull output, an open-drain output,
or a Schmitt-triggered input.
This General Purpose I/O pin is fully programmable
as either a push-pull output, an open-drain output,
or a Schmitt-triggered input.
This pin detects the state of the upstream bus
power. The Hub monitors VBUS_DET to determine
when to assert the USBDP0 pin's internal pull-up
resistor (signaling a connect event).
For bus powered hubs, this pin must be tied to
VDD33IO.
For self powered hubs, refer to the LAN9512
reference schematics.
Determines the default Auto-MDIX setting.
0 = Auto-MDIX is disabled.
1 = Auto-MDIX is enabled.
Used for factory testing, this pin must always be left
unconnected.
DESCRIPTION
Revision 1.0 (04-20-09)