Usb 2.0 Support; Super I/O; Table 22. Nic2 Status Led; Table 23. Super I/O Gpio Usage Table - Intel SE7520AF2 Technical Product Specification

Functional Architecture
LED Color
Green/Amber (Right)
Green (Left)
3.4.9

USB 2.0 Support

The Intel® Server Board SE7520AF2 uses the USB 2.0 functionality integrated into ICH5-R.
This supports up to six USB ports. The server board utilizes five of these ports: three ports are
located on the back edge of the board, and two are available internally via a DH-10 connector
that can be routed to the front of the chassis. The front USB ports can be disabled through the
BIOS Setup Utility.
3.4.10

Super I/O

Legacy I/O support is provided by using a National Semiconductor* PC87427 Super I/O device.
This chip contains the necessary circuitry to control two serial ports, a floppy disk drive, and
PS/2-compatible keyboard and mouse. The Intel® Server Board SE7520AF2 supports the
following features:
General Purpose Input/Output (GPIO)
Two serial ports
Floppy controller
Keyboard and mouse controller
Wake up control
3.4.10.1 General Purpose Input/Output (GPIO)
The National Semiconductor* PC87427 Super I/O provides general-purpose input/output pins
that the Intel® Server Board SE7520AF2 utilizes. The following table identifies the pins and the
signal names used in the schematic:
Pin
50 LED1
82 LMPCIF
54 WDO_N
124 GPIO00
10 GPIO6
13 GPIO7/HFCKOUT
37 GPIO27/SIOSMI
21 GPIOE40
68

Table 22. NIC2 Status LED

LED State
Off
Green
Amber
On
Blinking

Table 23. Super I/O GPIO Usage Table

Name IO/GPIO
Output
Input/Output
Output
Input/Output
Input/Output
Input/Output
Input/Output
Input/Output
Intel order number C77866-003
Intel® Server Board SE7520AF2 TPS
NIC State
10 Mbps
100 Mbps
1000 Mbps
Active Connection
Transmit / Receive activity
Intel® Server Board SE7520AF2 Use
FP Power LED
Single wire temperature sensor for PWM2
Rolling BIOS Reset
Manufacturing Detect Mode
BMC SYS IRQ
Available
SIO SMI
Riser Detect 1
Revision 1.2