Kontron COMe Starterkit Eval T2 - Manual (Page 129)

COM Express Interfaces
2.22. Miscellaneous Signals
Table 42: Miscellaneous Signals
Signal Pin Description I/O Comment
TYPE0#
TYPE1#
TYPE2# C54
C57
D57 The Type pins indicate the COM Express pin-out type of the
Module. To indicate the Module's pin-out type, the pins are
either not connected or strapped to ground on the Module.
The Carrier Board has to implement additional logic, which
prevents the system to switch power on, if a Module with an
incompatible pin-out type is detected. O 5V
PDS Only Available on T2-T6
TYPE10# A97 Indicates to the Carrier Board that a Type 10 Module is
installed. Indicates to the Carrier Board, that a Rev 1.0/2.0
Module is installed.
TYPE10#
NC Pin-out R2.0
PD Pin-out Type 10 pull down to ground with 47k
12V Pin-out R1.0
SPKR B32 Output used to control an external FET or a logic gate to
drive an external PC speaker. O 3.3V
CMOS
BIOS_DISABLE0# A34 Selection straps to determine the BIOS boot device.
The Carrier should
only float these or pull them low,
I 3.3V
CMOS See Section 2.17 'SPI –
Serial Peripheral Interface
Bus' on page 118 above
BIOS_DISABLE1# B88 Selection straps to determine the BIOS boot device.
The Carrier should
only float these or pull them low,
I 3.3V
CMOS See Section 2.17 'SPI –
Serial Peripheral Interface
Bus' on page 118 above
WDT B27 Output indicating that a watchdog time-out event has
occurred. O 3.3V
CMOS
KBD_RST# A86 Input signal of the Module used by an external keyboard
controller to force a system reset. I 3.3V
CMOS Only Available on T1-T5
KBD_A20GATE A87 Input signal of the Module used by an external keyboard
controller to control the CPU A20 gate line. The A20 gate
restricts the memory access to the bottom megabyte of the
system. Pulled high on the Module. I 3.3V
CMOS Only Available on T1-T5
LID# A103 LID switch.
Low active signal used by the ACPI operating system for a
LID switch.
I 3.3V
CMOS
OD Only Available on T6 and
T10
SLEEP# B103 Sleep button.
Low active signal used by the ACPI operating system to
bring the system to sleep state or to wake it up again.
I 3.3V
CMOS
OD Only Available on T6 and
T10
FAN_PWMOUT 1 B101 Fan speed control. Uses the Pulse Width Modulation
(PWM) technique to control the fan’s RPM.
O 3.3V
CMOS
OD Only Available on T6 and
T10
FAN_TACHIN 1 B102 Fan tachometer input for a fan with a two pulse output. I 3.3V
CMOS
OD Only Available on T6 and
T10
TPM_PP 1 A96 Trusted Platform Module (TPM) Physical Presence pin.
Active high. TPM chip has an internal pull down. This
signal is used to indicate Physical Presence to the TPM. I 3.3V
CMOS Only Available on T6 and
T10
GPO0
GPO1
GPO2
GPO3 A93
B54
B57
B63 General Purpose Outputs for system specific usage. O 3.3V
CMOS Refer to the Module's users
guide for information about
the functionality of these
signals.
GPI0
GPI1
GPI2
GPI3 A54
A63
A67
A85 General Purpose Input for system specific usage. The
signals are pulled up by the Module. I 3.3V
CMOS Refer to the Module's users
guide for information about
the functionality of these
signals.
1 These signals use reclaimed VCC_12V pins and must be protected on Module and Carrier Board against 12V usage. Please refer to
section 2.22.10 'Protecting COM.0 Pins Reclaimed From the VCC_12V Pool' on page 144 below.
PICMG ® COM Express ® Carrier Board Design Guide Rev. 2.0 / December 6, 2013
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