OVR
BP
SE
BFCS
ORE
DBDM
SEa
DB1
TE1
MOF
o
5
PP
RP
ALE
PTLE
IRE
DBa
TEO
SE1
MOS
Figure 19-20. Interrupt Status Register (EMACO_ISR)
0:5 Reserved
6
OVR Overrun
o No overrun error
1 Overrun error during reception of recent
packet
7
PP
Pause Packet
o Received packet is not a control pause
packet
1 Received packet is a control pause
packet
8
BP
Bad Packet
o Receive operation OK
1 Early termination was initiated because
of a packet error
9
RP Runt Packet
Set when EMACO_RMR[RRP] = 1 and the
o No Runt packets received
duration of
PHY _RX_DV signal was
1 Runt packet received
greater than ShortEventMaxTime constant
and less than the collision window.
10 SE
Short Event
o No short events
1 Duration of
PHY _RX_DV signal less than
ShortEventMaxTime constant
11
ALE Alignment Error
The packet contained an odd number of
o No alignment error in received packet
nibbles (4 bits).
1 Alignment error
in
received packet
12
BFCS Bad FCS Set if EMACO_RMR[RFP] = 1.
o No FCS error
in
received packet
1
Packet with an FCS error received
13
PTLE Packet
Too
Long Error
Set if EMACO_RMR[ROP] = 1 and the
o No oversized packets received
received packet length exceeded the
1 Oversized packet received
maximum allowed value:
• 1518 octets for standard packet (checked
only if the length/type field of the trans-
mitted packet contained length value and
jumbo support is disabled)
• 1522 octets for VLAN tagged packet
(checked only if the length/type field of
the transmitted packet contained length
value and jumbo support is disabled)
Preliminary Ethernet Media Access Controller 19-31
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