HS_Media independent interface (MII)
RM0082
538/844
Doc ID 018672 Rev 1
●
RA
Setting this bit, the MAC Receiver module passes to the application all frames received
regardless of whether they pass the address filter or not (but result of SA/DA filtering is
updated - pass or fail - in the corresponding bits in the received frame status word
(Receive Descriptor 0, RDES0).
Clearing this bit, only frames that pass the SA/DA address filter are passed to the
application.
●
HPF
When set, this bit configures the address filter to pass a frame if it matches either the
perfect filtering or the hash filtering as set by HMC or HUC bits. When low and if the
HUC/HMC bit is set, the frame is passed only if it matches the Hash filter.
●
SAF
Setting this bit, the MAC drops frame when SA filter fails (that is, when SA field of
received frames doesn't match with the values programmed in the enabled SA
registers). Clearing this bit, the MAC Core forwards the received frame to the
application and with the updated received frame status word (Receive Descriptor 0,
RDES0, section 1.2.3.1) depending on the SA address comparison.
●
SAIF
Setting this bit, the frames whose SA matches the SA registers will be marked as failing
the SA address filter (inverse filtering mode). Otherwise (bit cleared), frames whose SA
doesn't match the SA registers will be marked as failing the SA address filter (nominal
filtering mode).
●
PCF
This 2 bit field controls the forwarding of all control frames (including unicast and
multicast PAUSE frames), according to encoding below:
Table 446.
MAC frame filter register bit assignments
Bit
Name
Reset Value
Type
Description
[31]
1’h0
RW
Receive All.
[30:11]
Reserved
-
RO
Read: undefined
[10]
1’b0
RW
Hash or Perfect Filter
[09]
1’h0
RW
Source Address Filter Enable.
[08]
1’h0
RW
SA Inverse Filtering.
[07:06]
2’h0
RW
Pass Control Frames.
[05]
1’h0
RW
Disable Broadcast Frames.
[04]
1’h0
RW
Pass All Multicast.
[03]
1’h0
RW
DA Inverse Filtering.
[02]
1’h0
RW
Hash MultiCast.
[01]
1’h0
RW
Hash UniCast.
[00]
1’h0
RW
Promiscuous Mode.