Power Button; Table 22. Sata Dom Connector Pin-Out - Intel S2600KPFR Product Specifications

Technical Product Specification
Pin
14 USB2_FP_DP
12 GND
10 SATA6G_P4_RX_DP
8 SATA6G_P4_RX_DN
6 GND
4 FM_USB_OC_FP_N
2 P5V Aux
Combined system BIOS and the Integrated BMC support provide the functionality of the
various supported control panel buttons and LEDs. The following sections describe the
supported functionality of each control panel feature.

6.3.1 Power Button

The BIOS supports a front control panel power button. Pressing the power button initiates a
request that the Integrated BMC forwards to the ACPI power state machines in the chipset. It is
monitored by the Integrated BMC and does not directly control power on the power supply.
Power Button — Off to On

The Integrated BMC monitors the power button and the wake-up event signals from
the chipset. A transition from either source results in the Integrated BMC starting the
power-up sequence. Since the processors are not executing, the BIOS does not
participate in this sequence. The hardware receives the power good and reset signals
from the Integrated BMC and then transitions to an ON state.
Power Button — On to Off (operating system absent)

The System Control Interrupt (SCI) is masked. The BIOS sets up the power button
event to generate an SMI and checks the power button status bit in the ACPI hardware
registers when an SMI occurs. If the status bit is set, the BIOS sets the ACPI power state
of the machine in the chipset to the OFF state. The Integrated BMC monitors power
state signals from the chipset and de-asserts PS_PWR_ON to the power supply. As a
safety mechanism, if the BIOS fails to service the request, the Integrated BMC
automatically powers off the system in four to five seconds.
Power Button — On to Off (operating system present)

If an ACPI operating system is running, pressing the power button switch generates a
request through SCI to the operating system to shut down the system. The operating
system retains control of the system and the operating system policy determines the
sleep state into which the system transitions, if any. Otherwise, the BIOS turns off the
system.
The tables below list the connector pin definitions on the bridge board.
Revision 1.37
Signal Pin
13
11
9
7
5
3
1

Table 22. SATA DOM Connector Pin-out

Pin
Signal
Spare
FM_PS_ALL_NODE_OFF
FM_NODE_PRESENT_N (GND)
GND
SATA6G_P4_TX_DP
SATA6G_P4_TX_DN
P5V Aux
Signal Description
Connector and Header
69