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
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