Adlink Express-IB Bedienungsanleitung PDF herunterladen (Seite 22)

Page 22 Express-IB

3.3.10. SPI (BIOS only)

Signal Pin # Description I/O PU/PD Comment

SPI_CS# B97 Chip select for Carrier Board SPI BIOS Flash. O 3.3VSB

SPI_MISO A92 Data in to module from carrier board SPI BIOS flash. I 3.3VSB

SPI_MOSI A95 Data out from module to carrier board SPI BIOS flash. O 3.3VSB

SPI_CLK A94 Clock from module to carrier board SPI BIOS flash. O 3.3VSB

SPI_POWER A91 Power supply for Carrier Board SPI – sourced from Module

– nominally 3.3V.

The Module shall provide a minimum of 100mA on

SPI_POWER.

Carriers shall use less than 100mA of SPI_POWER.

SPI_POWER shall only be used to power SPI devices on

the Carrier

O P 3.3VSB

BIOS_DIS0# A34 Selection strap to determine the BIOS boot device. I PU 10K 3.3V Carrier shall pull to GND

or leave no- connect.

BIOS_DIS1# B88 Selection strap to determine the BIOS boot device. I PU 10K 3.3V Carrier shall pull to GND

or leave no- connect

3.3.11. 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

C83 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 PD 3.3V If TPM not installed on

module than remove PD

3.3V

3.3.12. 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

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