EZ80F91MCU ZILOG [Zilog, Inc.], EZ80F91MCU Datasheet - Page 282

• Manufacturer Part Number: EZ80F91MCU
• Description: eZ80Acclaim-TM Flash Microcontrollers
• Manufacturer: ZILOG [Zilog, Inc.]

PS019209-0504
EMAC Address Filter Register
The EMAC Address Filter Register functions as a filter to control promiscuous
mode, and multicast and broadcast messaging. See Table 152.
Table 152. EMAC Address Filter Register
(EMAC_AFR = 0032h)
Bit
Reset
CPU Access
Note: R = Read Only; R/W = Read/Write.
Bit
Position
[7:4]
3
PROM
2
MC
1
QMC
0
BC
Value
0h
1
0
1
0
1
0
1
0
Description
Reserved.
Enable Promiscuous Mode. Receive all incoming packets
regardless of station address. Disables station address
filtering.
Disable Promiscuous Mode.
Accept any multicast message. A multicast packet is
determined by the first bit in the destination address. If the first
LSB is a 1, it is a group address and is globally or locally
administered depending on the 2nd bit. See IEEE 802.3/3.2.3
for more information.
Do not accept multicast messages of any type.
Accept only qualified multicast (QMC) messages as
determined by the hash table.
Do not accept qualified multicast messages.
Accept broadcast messages. Broadcast messages have the
destination address set to FFFFFFFFFFFFh.
Do not accept broadcast messages.
P R E L I M I N A R Y
R
7
0
R
6
0
R
5
0
R
4
0
R/W
Ethernet Media Access Controller
3
0
Product Specification
R/W
2
0
eZ80F91 MCU
R/W
1
0
R/W
0
0
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