ADLINK Technology cExpress-KL User Manual page 24

Signal Pin
USB_4_5_OC# B38
USB_6_7_OC# A38
3.3.10. USB Root Segmentation
All USB from XHCI controller.
3.3.11. SPI (BIOS only)
Signal Pin
SPI_CS# B97
SPI_MISO A92
SPI_MOSI A95
SPI_CLK A94
SPI_POWER A91
BIOS_DIS0# A34
BIOS_DIS1# B88
18
Description
USB over-current sense, USB ports 4 and 5.
A pull-up for this line shall be present on the
module. An open drain driver from a USB
current monitor on the carrier board may
drive this line low.
USB over-current sense, USB ports 6 and 7.
A pull-up for this line shall be present on the
module. An open drain driver from a USB
current monitor on the carrier board may
drive this line low.
Description
Chip select for Carrier Board SPI BIOS
Flash.
Data in to module from carrier board SPI
BIOS flash.
Data out from module to carrier board SPI
BIOS flash.
Clock from module to carrier board SPI
BIOS flash.
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
Selection strap to determine the BIOS boot
device.
Selection strap to determine the BIOS boot
device.
I/O PU/PD Comment
I PU 10k Do not pull high on carrier
3.3VSB 3.3VSB
I PU 10k Do not pull high on carrier
3.3VSB 3.3VSB
I/O PU/PD
O 3.3VSB PU 10K
3.3VSB
I 3.3VSB
O 3.3VSB
O 3.3VSB
O P 3.3VSB
I PU 10K
3.3VSB
I PU 10K
3.3VSB
Pinouts and Signal Descriptions
Comment
Carrier shall pull
to GND or leave
no- connect.
Carrier shall pull
to GND or leave
no- connect