DFI KB968 - Manual (Page 23)

www.dfi .com Chapter 3 Hardware Installation
23
Chapter 3
Signal Pin# Pin Type Pwr Rail /Tolerance KB968 Carrier Board Description
LPC_AD0 B4
LPC_AD1 B5
LPC_AD2 B6
LPC_AD3 B7
LPC_FRAME# B3 O CMOS 3.3V / 3.3V LPC frame indicates the start of an LPC cycle
LPC_DRQ0# B8
LPC_DRQ1# B9
LPC_SERIRQ A50 I/O CMOS 3.3V / 3.3V PU 40-50K to 3.3V LPC serial interrupt
LPC_CLK B10 O CMOS 3.3V / 3.3V LPC clock output - 33MHz nominal
Signal Pin# Pin Type Pwr Rail /Tolerance KB968 Carrier Board Description
SPI_CS# B97 O CMOS 3.3V Suspend/3.3V
Connect a series resistor 33ȟ to Carrier
Board SPI Device CS# pin
Chip select for Carrier Board SPI - may be sourced from chipset SPI0 or SPI1
SPI_MISO A92 I CMOS 3.3V Suspend/3.3V
Connect a series resistor 33ȟ to Carrier
Board SPI Device SO pin
Data in to Module from Carrier SPI
SPI_MOSI A95 O CMOS 3.3V Suspend/3.3V
Connect a series resistor 33ȟ to Carrier
Board SPI Device SI pin
Data out from Module to Carrier SPI
SPI_CLK A94 O CMOS 3.3V Suspend/3.3V
Connect a series resistor 33ȟ to Carrier
Board SPI Device SCK pin
Clock from Module to Carrier SPI
SPI_POWER A91 O 3.3V Suspend/3.3V
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
BIOS_DIS0# A34
BIOS_DIS1# B88
Signal Pin# Pin Type Pwr Rail /Tolerance KB968 Carrier Board Description
VGA_RED B89 O Analog Analog PD 150R to GND PD 150R Red for monitor. Analog output
VGA_GRN B91 O Analog Analog PD 150R to GND PD 150R Green for monitor. Analog output
VGA_BLU B92 O Analog Analog PD 150R to GND PD 150R Blue for monitor. Analog output
VGA_HSYNC B93 O CMOS 3.3V / 3.3V PD 1K to GND Horizontal sync output to VGA monitor
VGA_VSYNC B94 O CMOS 3.3V / 3.3V Vertical sync output to VGA monitor
VGA_I2C_CK B95 I/O OD CMOS 3.3V / 3.3V PU 4.7K to 3.3V DDC clock line (I2C port dedicated to identify VGA monitor capabilities)
VGA_I2C_DAT B96 I/O OD CMOS 3.3V / 3.3V PU 4.7K to 3.3V DDC data line.
Signal Pin# Pin Type Pwr Rail /Tolerance KB968 Carrier Board Description
SER0_TX A98 O CMOS 5V/5V PD 4.7K General purpose serial port 0 transmitter
SER0_RX A99 I CMOS 3.3V/5V PU 47K to 3.3V General purpose serial port 0 receiver
SER1_TX A101 O CMOS 5V/5V PD 4.7K General purpose serial port 1 transmitter
SER1_RX A102 I CMOS 3.3V/5V PU 47K to 3.3V General purpose serial port 1 receiver
3.3V / 3.3V LPC serial DMA request
I/O CMOS 3.3V / 3.3V
VGA Signals Descriptions
NA
Selection straps to determine the BIOS boot device.
The Carrier should only float these or pull them low, please refer to
COM Express Module Base Specification Revision 2.1 for strapping options of BIOS disable signals.
LPC Signals Descriptions
Serial Interface Signals Descriptions
I CMOS
I CMOS
LPC multiplexed address, command and data bus
SPI Signals Descriptions
Connect to LPC device