Ethernet MAC
UG0331 User Guide Revision 15.0 408
27 TBIMODE 0x0 Setting this bit configures the A-RGMII module to expect TBI
signals at the GMII interface. This bit should not be asserted
unless this mode is being used.
26 GHDMODE 0x0 Setting this bit configures the A-RGMII module to expect half-
duplex GMII at the GMII interface.
25 LHDMODE 0x0 Setting this bit configures the A-RGMII module to expect 10 or
100 half duplex MII at the GMII interface. This bit should not
be asserted unless this mode is being used.
24 PHY MODE 0x0 Setting this bit configures the PESMII serial MII module to be
in PHY mode. Link characteristics are taken directly from the
Rx segments supplied by the PHY. Clearing this bit configures
the PESMII to be in MAC to MAC mode. In this configuration,
the Serial MII module reverts to the pre-defined settings of
100 Mbps, Full-duplex.
23 RESET PERMII 0x0 Setting this bit resets the PERMII module. Clearing this bit
allows for normal operation.
[22:17] Reserved 0x0 Reserved
16 SPEED 0x0 This bit configures the PERMII Reduced MII module with the
current operating speed.
When set, 100 Mbps mode is selected. When cleared, 10
Mbps mode is selected.
15 RESET PE100X 0x0 This bit resets the 4B/5B symbol encipher/decipher logic.
[14:11] Reserved 0x0 Reserved
10 FORCE QUIET 0x0 When enabled, the transmit data is cleared which allows the
contents of the cipher to be the output. When cleared, the
normal operation is enabled. This affects the 4B/5B symbol
encipher/decipher logic module only.
9 NO CIPHER 0x0 When enabled, the raw transmit 5B symbols are transmitted
without ciphering.
When disabled, the normal ciphering occurs. This affects the
4B/5B symbol encipher/decipher logic module only.
8 DISABLE LINK FAIL 0x0 When enabled, the 330 ms Link Fail timer is disabled,
allowing shorter simulations. Removes the 330 ms link-up
time before reception of streams is allowed. When cleared,
normal operation occurs. Affects 4B/5B symbol
encipher/decipher logic module only.
7 Reserved 0x0 Reserved
[6:1] Reserved 0x0 Reserved
0 ENABLE JABBER
PROTECTION
0x0 This bit enables the jabber protection logic. Jabber is the
condition where a transmitter is stuck on for longer than 50ms
preventing other stations from transmitting.
Table 359 • INTERFACE_CTRL (continued)
Bit Number Name Reset Value Description
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