IBM PowerPC 405GP User Manual page 547

14 ORE Out Of Range Error Indicates that received packet has a length
o
Received packet length field value OK
field value greater than the maximum
1 Received packet length field value
allowed Logical Link Control (LLC) data
greater than the maximum allowed LLC
size (greater than 1500 and less than
data size
1536).
15 IRE In Range Error
o
Received packet does not contain an In
Range Error
1 Received packet contains an In Range
Error
16:21 Reserved
22 DBDM Dead Bit Dependent Mode If EMACO_ISR[DBDM]
=
1, EMAC does
o
No transmit error or SQE in dependent
not request MAL service, even if
mode
EMACO_TMRO[GNPD]
=
1.
1 Transmit error or SQE has occurred
EMACO_ISR[DBDMj does not affect
while in dependent mode
EMC_INT.
23 DBO Dead Bit 0 If EMACO_ISR[DBOj
=
1, EMAC does not
o
No transmit error or SQE for TX Channel
request service for TX Channel 0 from
o
while not in dependent mode
MAL, even if EMACO_ TMRO[GNPO]
=
1.
1 Transmit error or SQE has occurred for
EMACO_ISR[DBO] does not affect
TX Channel 0 while not in dependent
EMC_INT.
mode
24
SE~
SQE Error 0 Applicable only in half-duplex mode during
o
No SQEs on TX Channel 0
10 Mbps operations; 0 in all other modes.
1 SQE test failure during transmission of a
packet from TX Channel 0
25 TEO Transmit Error 0 EMAC aborts the transmitted packet if one
o
TX Channel 0 transmission OK
of the following events takes place:
1 TX Channel 0 transmission aborted
• Late collision detection
• Excessive collision detection
• Excessive deferral
• TX FIFO underrun
• Loss of carrier sense
26 DB1 Dead Bit 1 If this bit is set, EMAC does not request
o
No transmit error or SQE for TX Channel
MAL service for TX Channel 1 even if
1 while not in dependent mode
EMACO_TMR1[GNP1]
=
1.
1 Transmit error or a SQE has occurred for
EMACO_ISR[DB1] does not affect
TX Channel 1 while not in dependent
EMC_INT.
mode
27 SE1 SQE Error 1 Applicable only in half-duplex mode during
o
No Signal Quality Errors on TX Channel
10 Mbps operations; 0 in all other modes.
1
1 Signal Quality Error test failure during
transmission of a packet from TX
Channel 1
19-32 PPC405GP User's Manual Preliminary