Information

Enhanced Three-Speed Ethernet Controllers
MPC8308 PowerQUICC II Pro Processor Reference Manual, Rev. 1
Freescale Semiconductor 16-89
16.5.3.6.24 Receive Dropped Packet Counter (RDRP)
Figure 16-74 describes the definition for the RDRP register.
Table 16-78 describes the fields of the RDRP register.
16.5.3.6.25 Transmit Byte Counter (TBYT)
Figure 16-75 depicts the TBYT register.
Table 16-79 describes the fields of the TBYT register.
Offset eTSEC1:0x2_46DC; eTSEC2:0x2_56DC Access: Read/Write
0151631
R
— RDRP
W
Reset All zeros
Figure 16-74. Receive Dropped Packet Counter Register Definition
Table 16-78. RDRP Field Descriptions
Bits Name Description
0–15 — Reserved
16–31 RDRP Receive dropped packets counter. Increments for frames received which are streamed to system but
are later dropped due to lack of system resources.
Offset eTSEC1:0x2_46E0; eTSEC2:0x2_56E0 Access: Read/Write
0 31
R
TBYT
W
Reset All zeros
Figure 16-75. Transmit Byte Counter Register Definition
Table 16-79. TBYT Field Descriptions
Bits Name Description
0–31 TBYT Transmit byte counter. Increments by the number of bytes that were put on the wire including fragments of
frames that were involved with collisions. This count does not include preamble/SFD or jam bytes, except for
half-duplex flow control (back-pressure triggered by TCTRL[THDF] = 1). For THDF, the sum total of
‘phantom’ preamble bytes transmitted for flow control purposes is included in the TBYT increment value of
the next frame to be transmitted, up to 65,535 bytes of frame and phantom preamble.
Note that the value of TBYT may be greater than the actual number of bytes transmitted if the frame is
truncated because it exceeds MAXFRM.