ADLINK nanoX-BT - Manual (Page 23)

nanoX-BT Page 23
3.3.13. Miscellaneous
Signal Pin # Description I/O PU/PD Comment
SPKR B32 Output for audio enunciator, the “speaker” in PC-AT systems O 3.3V
WDT B27 Output indicating that a watchdog time-out event has occurred. O 3.3V
THRM# B35 Input from off-module temp sensor indicating an over-temp situation. I 3.3V
THERMTRIP# A35 Active low output indicating that the CPU has entered thermal shutdown. O 3.3V
FAN_PWMOUT B101 Fan speed control. Uses the Pulse Width Modulation (PWM) technique to
control the fan’s RPM.
O OD 3.3V
FAN_TACHIN11 B102 Fan tachometer input for a fan with a two pulse output. I OD 3.3V PU 10k 3.3V
TPM_PP11 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 No TPM
supported
3.3.14. SMBus
Signal Pin # Description I/O PU/PD Comment
SMB_CK B13 System Management Bus bidirectional clock line. Power sourced through 5V standby
rail and main power rails. I/O OD
3.3VSB PU 2k2
3.3VSB
SMB_DAT# B14 System Management Bus bidirectional data line. Power sourced through 5V standby
rail and main power rails. I/O OD
3.3VSB PU 2k2
3.3VSB
SMB_ALERT# B15 System Management Bus Alert – active low input can be used to generate an SMI#
(System Management Interrupt) or to wake the system. Power sourced through 5V
standby rail and main power rails. I 3.3VSB PU 10k
3.3VSB
3.3.15. I2C Bus
Signal Pin # Description I/O PU/PD Comment
I2C_CK B33 General purpose I²C port clock output/input I/O OD 3.3VSB PU 2k2 3.3VSB Source SEMA BMC or BayTrail SOC as
alternative
I2C_DAT B34 General purpose I²C port data I/O line I/O OD 3.3VSB PU 2k2 3.3VSB Source SEMA BMC or BayTrail SOC as
alternative
3.3.16. General Purpose I/O (GPIO)
Signal Pin # Description I/O PU/PD Comment
GPO[0] A93 General purpose output pins. O 3.3V PU 10K 3.3V After hardware RESET output low
GPO[1] B54 General purpose output pins. O 3.3V
PU 10K 3.3V After hardware RESET output low
GPO[2] B57 General purpose output pins. O 3.3V PU 10K 3.3V After hardware RESET output low
GPO[3] B63 General purpose output pins. O 3.3V
PU 10K 3.3V After hardware RESET output low
GPI[0] A54 General purpose input pins. Pulled high internally on the
module. I 3.3V PU 10K 3.3V PU not in PICMG suggest 10K
GPI[1] A63 General purpose input pins. Pulled high internally on the
module. I 3.3V PU 10K 3.3V PU not in PICMG suggest 10K
GPI[2] A67 General purpose input pins. Pulled high internally on the
module. I 3.3V PU 10K 3.3V PU not in PICMG suggest 10K
GPI[3] A85 General purpose input pins. Pulled high internally on the
module. I 3.3V PU 10K 3.3V PU not in PICMG suggest 10K