MCF548x Reference Manual, Rev. 3
30-10 Freescale Semiconductor

30.3.3.1 Ethernet Interrupt Event Register (EIR)

When an event occurs that sets a bit in the EIR, an interrupt will be generated if the corresponding bit in

the interrupt mask register (EIMR) is also set. The bit in the EIR is cleared if a one is written to that bit

position; writing zero has no effect. This register is cleared upon hardware reset.

These interrupts can be divided into operational interrupts, transceiver/network error interrupts, and

internal error interrupts. Interrupts which may occur in normal operation are GRA, TXF, and MII.

0x9278–
0x927C
0x9A78–
0x9A7C
Reserved
0x9280 0x9A80 RMON_R_DROP Count of frames not counted correctly
0x9284 0x9A84 RMON_R_PACKETS RMON Rx packet count
0x9288 0x9A88 RMON_R_BC_PKT RMON Rx Broadcast Packets
0x928C 0x9A8C RMON_R_MC_PKT RMON Rx Multicast Packets
0x9290 0x9A90 RMON_R_CRC_ALIGN RMON Rx Packets w CRC/Align error
0x9294 0x9A94 RMON_R_UNDERSIZE RMON Rx Packets < 64 bytes, good crc
0x9298 0x9A98 RMON_R_OVERSIZE RMON Rx Packets > MAX_FL bytes, good crc
0x929C 0x9A9C RMON_R_FRAG RMON Rx Packets < 64 bytes, bad crc
0x92A0 0x9AA0 RMON_R_JAB RMON Rx Packets > MAX_FL bytes, bad crc
0x92A4 0x9AA4 RMON_R_RESVD_0
0x92A8 0x9AA8 RMON_R_P64 RMON Rx 64 byte packets
0x92AC 0x9AAC RMON_R_P65TO127 RMON Rx 65 to 127 byte packets
0x92B0 0x9AB0 RMON_R_P128TO255 RMON Rx 128 to 255 byte packets
0x92B4 0x9AB4 RMON_R_P256TO511 RMON Rx 256 to 511 byte packets
0x92B8 0x9AB8 RMON_R_P512TO1023 RMON Rx 512 to 1023 byte packets
0x92BC 0x9ABC RMON_R_P1024TO2047 RMON Rx 1024 to 2047 byte packets
0x92C0 0x9AC0 RMON_R_P_GTE2048 RMON Rx packets w > 2048 bytes
0x92C4 0x9AC4 RMON_R_OCTETS RMON Rx Octets
0x92C8 0x9AC8 IEEE_R_DROP Count of frames not counted correctly
0x92CC 0x9ACC IEEE_R_FRAME_OK Frames Received OK
0x92D0 0x9AD0 IEEE_R_CRC Frames Received with CRC Error
0x92D4 0x9AD4 IEEE_R_ALIGN Frames Received with Alignment Error
0x92D8 0x9AD8 IEEE_R_MACERR Receive Fifo Overflow count
0x92DC 0x9ADC IEEE_R_FDXFC Flow Control Pause frames received
0x92E0 0x9AE0 IEEE_R_OCTETS_OK Octet count for Frames Rcvd w/o Error

Table 30-6. MIB Counters Memory Map (Continued)

MBAR Offset
for FEC0
MBAR Offset
for FEC1 Mnemonic Description