Appendix A – Technical Summary
ATXP-965Q Technical Reference
52
Chassis Plans
On-Board Industrial Devices
The ATXP-965Q offers one or two Gigabit Ethernet controller and up to four serial ports (one
optional RS422/485). The ATXP-965Q also offers three other On-Board Industrial devices:
Watchdog timer, Hardware health monitor and a Post Code display that will help you on
troubleshooting.
Post Code Display
The POST code display is a device implemented on the ATXP-
965Q to help on failure diagnostics. A POST code is transmitted by
the BIOS during the POST (Power On Self Test). It is a number that
refers to the state or test condition of a circuit or group of circuits.
Knowing the results of these tests (hence the POST code) can be
very important in debugging a system.
POST Checkpoint Codes
When AMIBIOS8 performs the Power On Self Test, it writes
diagnostic codes checkpoint codes to I/O port 0080h where the
POST code display is connected. Please, refer to Appendix B for
POST codes description.
On-board Ethernet
The ATXP-965Q features two Intel 82573L Ethernet Controllers.
PCIe
x1 PCIe interface
Peak bandwidth: 2Gb/s per direction
Power management
High bandwidth density per pin
MAC
Optimized transmit and receive queues
IEEE 802.3x compliant flow control with software controlled pause
times and threshold values
Caches up to 64 packet descriptors per queue
Programmable host memory receives buffers (256 bytes to 16 KB)
and cache line size (16 bytes to 256 bytes)
32 KB configurable transmit and receive FIFO buffer
Mechanism available for reducing interrupts generated by transmits
and receives operation
Descriptor ring management hardware for transmit and receive
Optimized descriptor fetching and write-back mechanisms
Wide, pipelined internal data path architecture
PHY
Integrated PHY for 10/100/1000 Mb/s full and half duplex operation
IEEE 802.3ab auto negotiation support
IEEE 802.3ab PHY compliance and compatibility
DSP architecture implements digital adaptive equalization, echo
cancellation, and cross-talk cancellation
