Adapter Internal Registers

 

Table A±14. Ethernet Error Counters

 

 

 

 

Counter

Definition

 

 

 

 

Good Tx frames

are without errors. This is a 24-bit counter. Good frames are transmitted more

 

 

frequently than errored frames.

 

Tx frames

are aborted during transmission, due to frame data not being available (due to

 

 

host bus latencies). This is a byte-wide counter.

 

Good Rx frame underruns

are received without errors. This is a 24-bit counter. Good frames are received

 

 

more frequently than errored frames.

 

Rx overrun frames

are address-matched and could not be received due to inadequate resources

 

 

(Rx FIFO full) or because their frame size exceeded MaxRx. This is a byte-wide

 

 

counter.

 

Deferred Tx frames

were deferred to prior network traffic on their initial attempt at transmission.

 

 

This is a 16-bit counter.

 

CRC error frames

are received with CRC errors, but without alignment or coding errors. This is

 

 

a byte-wide counter.

 

Code error frames

are received with alignment (not an even number of nibbles) or code errors

 

 

(MRXER signaled from PHY). This is a byte-wide counter.

 

Multicollision Tx frames

have encountered 2 to 15 collisions before being transmitted on the network.

 

 

This is a 16-bit counter.

 

Single collision frames

have encountered one collision before being transmitted on the network. This

 

 

is a 16-bit counter.

 

Excessive collisions

have failed to gain access to the network in 16 attempts (frames that experi-

 

 

enced 16 collisions). This is a byte-wide counter.

 

Late collisions

have been interrupted by a collision after the network slottime. This is a byte-

 

 

wide counter.

 

Carrier loss errors

are sent by the adapter and for which a receive carrier was not detected after

 

 

a slottime from the start of transmission. The carrier must be present continu-

 

ously from this point until the end of transmission to prevent an error being logged.² This is a byte-wide counter.

² Carrier loss errors are not logged in full-duplex mode.

Register Definitions

A-33

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Texas Instruments TNETE100A, TNETE211, TNETE110A manual Table A±14. Ethernet Error Counters, Counter Definition
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TNETE110A, TNETE211, TNETE100A specifications

Texas Instruments has been a leader in developing innovative semiconductor solutions, and their Ethernet PHY (Physical Layer Transceiver) family, specifically the TNETE100A, TNETE211, and TNETE110A, exemplifies this commitment to excellence. These devices are designed to address the needs of a variety of applications, ranging from industrial automation to consumer electronics.

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