NEC UPD98413 User Manual page 69

(g) Performance monitors
The µ PD98413 supports the following performance counters. All the counters are 32-bit counters.
• Transmit valid packet counter
• Transmit abort packet counter
• Transmit FIFO underflow packet counter
Transmit valid packet counter
Upon sending a valid packet (packet other than abort packets), the µ PD98413 increments the transmit valid
packet counter. This counter is selectable in units of packets or bytes by the VPCTM bit of the MDCNTT register.
Transmit abort packet counter
Upon sending an abort packet, the µ PD98413 increments the send abort packet counter. This counter includes
the counts of the abort packet due to a transmit FIFO underflow and TERR is asserted. See the description
above for details of the transmission of an abort packet.
Transmit FIFO underflow packet counter
The µ PD98413 increments the transmit FIFO underflow packet counter when a transmit FIFO underflow occurs
during packet transmission.
CHAPTER 3 FUNCTIONAL OUTLINE
PRELIMINARY
NEC confidential and Proprietary
69