Espressif ESP32 Technical Reference Manual page 233

10 Ethernet Media Access Controller (MAC)
The following two tables summarize the destination address and source address filtering, based on the type of
the frames received.
Frame Type PM PF
1 X
Broadcast 0 X
0 X
1 X
0 X
Unicast 0 X
0 1
0 1
1 X
X X
0 X
Multicast 0 1
0 X
0 1
The filtering parameters in the MAC Frame Filter Register described in Table
Parameter name:
PM: Pass All Multicast
PF: Perfect Filter
DAIF: Destination Address Inverse Filtering
PAM: Pass All Multicast
DB: Disable Broadcast Frames
Frame Type PM
1
0
0
Unicast
0
0
The filtering parameters in the MAC Frame Filter Register described in Table
Espressif Systems
Table 10-1. Destination Address Filtering
DAIF PAM DB
X X X
X X 0
X X 1
X X X
0 X X
1 X X
0 X X
1 X X
X X X
X 1 X
0 0 X
0 0 X
1 0 X
1 0 X
Parameter setting:
1:
0:
Table 10-2. Source Address Filtering
SAIF SAF Source Address Filter Operation
X X Pass all frames
Pass when results of perfect/group filtering match. Frames not passed
0 0
are not discarded.
Fail when results of perfect/group filtering match. Frames not passed
1 0
are not discarded.
Pass when results of perfect/group filtering match. Frames not passed
0 1
are discarded.
Fail when results of perfect/group filtering match. Frames not passed
1 1
are discarded.
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DA Filter Result
Pass
Pass
Fail
All frames pass.
Pass when results of perfect/group filtering match.
Fail when results of perfect/group filtering match.
Pass when results of perfect/group filtering match.
Fail when results of perfect/group filtering match.
All frames pass.
All frames pass.
Pass when results of perfect/group filtering match and
pause control frame is discarded, if PCF = 0x.
Pass when results of perfect/group filtering match and
pause control frame is discarded, if PCF = 0x.
Fail when results of perfect/group filtering match and
pause control frame is discarded, if PCF = 0x.
Fail when results of perfect/group filtering match and
pause control frame is discarded, if PCF = 0x.
10-1
Set
Cleared
10-2
233
are as follows.
are as follows.
ESP32 TRM (Version 5.2)