ADLINK Technology nanoX-TCR, Справочное руководство

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Chapter 3 Hardware
24 Reference Manual nanoX-TCR
I
²
C
™
Bus
The I²C bus is implemented through the use of the Atmel ATmega168 board controller. The board controller
provides a Fast Mode (400kHz max.) multi-master I²C bus that has maximum I²C bandwidth. Use the
ADLINK Intelligent Device Interface (AIDI) Library for access to the I²C bus. AIDI driver information is
available in the Utilities link of the nanoX-TCR product page at: http://www.adlinktech.com . An AIDI
demo program and the AIDI User’s Manual describing how to use the I²C bus also reside in the Utilities link
of the nanoX-TCR product page.
PCI Express
™
The nanoX-TCR offers four (4x) PCI Express x1 ports (ports 0-3) through the COM Express A-B connector,
originating from the CPU. Ports 2 and 3 can be configured to support PCI Express edge cards or
ExpressCards, supporting up to 2.5 Gb/s bandwidth in each direction. The first x1 port (port 0) acts as the
connection between the CPU and the PCH and cannot be used as a PCIe port. The second x1 port (port 1) is
occupied by the onboard Gigabit Ethernet controller and is also unavailable as a PCIe port. The PCI Express
interface is based on the
PCI Express Specification 1.0a.
System Management Bus (SMBus)
The E6XXT chip contains a host SMBus port. The host port allows the CPU access to the SMBus slaves.
The SMBus slaves include the Gigabit Ethernet Controller and the CPU Temperature Sensor. Table 3-4 lists
the device names and corresponding reserved binary addresses on the SMBus.
CAN Bus [Optional]
The CAN controller resides in the PCH and performs communication in accordance with the Bosch CAN
Protocol version 2.0B (standard and extended formats.) The CAN controller transmits and receives CAN
signals to and from the CAN header on the baseboard. The CAN interface delivers CAN signals used for
automotive, industrial automation, and medical scanning and imaging applications. The following list
describes some of the features of the CAN Bus Interface.
♦
+/- 12 kV ESD protection
♦
Low-current Standby mode with bus wake up: 5 A typical
♦
Bus-fault protection of -27V to 40V
♦
Over-temperature shutdown
Table 3-4. SMBus Reserved Addresses
Component Address (binary)
CPU Temperature Sensor 1001,100x
b
Gigabit Ethernet Controller 1100,001x
b
NOTE Please contact your ADLINK sales representative for ordering information on
the optional CAN bus.
μ