Allied Telesis AT-2973T (NetExtreme II) - Manual (Page 123)

AT-2973SX and AT-2973T NetExtreme II Family Adapters Installation and User’s Guide
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C2 RBUF Allocation Verifies the RX buffer (RBUF) allocation
interface by allocating and releasing buffers
and checking that the RBUF block maintains
an accurate count of the allocated and free
buffers.
C3 CAM Access Verifies the content-addressable memory
(CAM) block by performing read, write, add,
modify, and cache hit tests on the CAM
associative memory.
C4 TPAT Cracker Verifies the packet cracking logic block (that
is, the ability to parse TCP, IP, and UDP
headers within an Ethernet frame) as well as
the checksum/CRC offload logic. In this test,
packets are submitted to the chip as if they
were received over Ethernet and the TPAT
block cracks the frame (identifying the TCP,
IP, and UDP header data structures) and
calculates the checksum/CRC. The TPAT
block results are compared with the values
expected by Broadcom NetXtreme II User
Diagnostics and any errors are displayed.
C5 FIO Register The Fast IO (FIO) verifies the register
interface that is exposed to the internal CPUs.
C6 NVM Access and
Reset-Corruption Verifies non-volatile memory (NVM) accesses
(both read and write) initiated by one of the
internal CPUs. It tests for appropriate access
arbitration among multiple entities (CPUs). It
also checks for possible NVM corruption by
issuing a chip reset while the NVM block is
servicing data.
C7 Core-Reset
Integrity
Verifies that the chip performs its reset
operation correctly by resetting the chip
multiple times, checking that the bootcode
and the internal uxdiag driver loads/unloads
correctly.
Table 8. Diagnostic Tests (Continued)
Test
Description
Number Name