Signal
Name
I/O
Type
Default
Mode
Ball
Coun
t
Default
Direction
and Logic
State
Power
Well
Internal/
External
Resistor Pull-
Up/Down
Description
triggers memory controller of CPU to put
SDRAM into self-refresh mode. Activation
of ADR flushes contents of some write
data buffers to the DIMM before self
refresh entry.
SLOAD/
GPIO38
I/O
GPI
1
I
CORE
SATA Serial GPIO Load. The controller
drives a ‘1’ at the rising edge of SCLOCK
to indicate either the start or end of a bit
stream. A 4-bit vendor specific pattern
will be transmitted right after the signal
assertion.
If SLOAD interface is not used, this signal
can be used as a GPIO Port 38.
SDATAOU
T0/
GPIO39
I/O
GPI
1
I
CORE
SATA Serial GPIO Data Out 0. Driven by
the controller to indicate the drive status
in the following sequence: drive 4,
5...4,5...
If SDATAOUT0 interface is not used, this
signal can be used as a GPIO Port 39.
OC1#/
GPIO40
2
I/O
OC1#
1
I
SUS
Overcurrent Indicators. These signals set
corresponding bits in the USB controllers
to indicate that an overcurrent condition
has occurred.
OC[3:0]# may optionally be used as
GPIO Ports [42,41,40,59].
Note:
1. OC# pins are 3.3V and NOT 5V
tolerant
2. OC# pins must be shared between
ports
3. OC#[3:0] can only be used for EHCI
controller #1
OC2#/
GPIO41
2
I/O
OC2#
1
I
SUS
Overcurrent Indicators. These signals set
corresponding bits in the USB controllers
to indicate that an overcurrent condition
has occurred.
OC[3:0]# may optionally be used as
GPIO Ports [42,41,40,59].
Note:
1. OC# pins are 3.3V and NOT 5V
tolerant
2. OC# pins must be shared between
ports
3. OC#[3:0] can only be used for EHCI
controller #1
OC3#/
GPIO42
2
I/O
OC3#
1
I
SUS
Overcurrent Indicators. These signals set
corresponding bits in the USB controllers
to indicate that an overcurrent condition
has occurred.
OC[3:0]# may optionally be used as
GPIO Ports [42,41,40,59].
Note:
1. OC# pins are 3.3V and NOT 5V
tolerant
2. OC# pins must be shared between
ports
continued...
Crystal Forest—Technical Reference
Intel
®
Xeon
®
Processor E3-1125C with Intel
®
Communications Chipset 8910 Development Kit
User Guide
October 2012
48
Order No.: 328009-001US