1 mib block counters memory map, 1 mib block counters memory map -7 – Motorola ColdFire MCF5281 User Manual
Page 317
Fast Ethernet Controller (FEC)
Freescale Semiconductor
17-7
17.4.1
MIB Block Counters Memory Map
The MIB counters memory map (
) defines the locations in the MIB RAM space where
hardware-maintained counters reside. The counters are divided into two groups:
•
RMON counters include the Ethernet statistics counters defined in RFC 1757
•
A counter is included to count truncated frames since only frame lengths up to 2047 bytes are
supported
The transmit and receive RMON counters are independent, which ensures accurate network statistics when
operating in full duplex mode.
The included IEEE counters support the mandatory and recommended counter packages defined in
Section 5 of ANSI/IEEE Std. 802.3 (1998 edition). The FEC supports IEEE Basic Package objects, but
these do not require counters in the MIB block. In addition, some of the recommended package objects
supported do not require MIB counters. Counters for transmit and receive full duplex flow control frames
are also included.
Table 17-4. MIB Counters Memory Map
IPSBAR Offset
Register
0x1200
Count of frames not counted correctly (RMON_T_DROP)
0x1204
RMON Tx packet count (RMON_T_PACKETS)
0x1208
RMON Tx broadcast packets (RMON_T_BC_PKT)
0x120C
RMON Tx multicast packets (RMON_T_MC_PKT)
0x1210
RMON Tx packets with CRC/align error (RMON_T_CRC_ALIGN)
0x1214
RMON Tx packets < 64 bytes, good CRC (RMON_T_UNDERSIZE)
0x1218
RMON Tx packets > MAX_FL bytes, good CRC (RMON_T_OVERSIZE)
0x121C
RMON Tx packets < 64 bytes, bad CRC (RMON_T_FRAG)
0x1220
RMON Tx packets > MAX_FL bytes, bad CRC (RMON_T_JAB)
0x1224
RMON Tx collision count (RMON_T_COL)
0x1228
RMON Tx 64 byte packets (RMON_T_P64)
0x122C
RMON Tx 65 to 127 byte packets (RMON_T_P65TO127)
0x1230
RMON Tx 128 to 255 byte packets (RMON_T_P128TO255)
0x1234
RMON Tx 256 to 511 byte packets (RMON_T_P256TO511)
0x1238
RMON Tx 512 to 1023 byte packets (RMON_T_P512TO1023)
0x123C
RMON Tx 1024 to 2047 byte packets (RMON_T_P1024TO2047)
0x1240
RMON Tx packets with > 2048 bytes (RMON_T_P_GTE2048)
0x1244
RMON Tx Octets (RMON_T_OCTETS)
0x1248
Count of transmitted frames not counted correctly (IEEE_T_DROP)
0x124C
Frames transmitted OK (IEEE_T_FRAME_OK)
0x1250
Frames transmitted with single collision (IEEE_T_1COL)
MCF5282 and MCF5216 ColdFire Microcontroller User’s Manual, Rev. 3