Datasheet

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DP83849I
3.5.1 RX MII Port Mapping
Note that Channel A is the master of MII Port A, and Chan-
nel B is the master of MII Port B. This means that in order
for Channel B to control MII Port A, Channel A must be
configured to either control MII Port B or be Disabled; the
reverse is also true.
RX MII Port Mapping controls and configurations are
shown in the following tables:
Table 6. RX MII Port Mapping Controls
Table 7. RX MII Port Mapping Configurations
RBR[12:11] Desired RX Channel Destination
00 Normal Port
01 Opposite Port
10 Both Ports
11 Disabled
Channel A RBR[12:11] Channel B RBR[12:11] RX MII Port A Source RX MII Port B Source
00 00 Channel A Channel B
00 01 Channel A Channel B
00 10 Channel A Channel B
00 11 Channel A Disabled
01 00 Channel A Channel B
01 01 Channel B Channel A
01 10 Channel B Channel A
01 11 Disabled Channel A
10 00 Channel A Channel B
10 01 Channel B Channel A
10 10 Channel A Channel B
10 11 Channel A Channel A
11 00 Disabled Channel B
11 01 Channel B Disabled
11 10 Channel B Channel B
11 11 Disabled Disabled