Altera cyclone V Technical Reference page 1354

cv_5v4
2016.10.28
Bit
23
wd
22
jd
21
be
20
je
Ethernet Media Access Controller
Send Feedback
Name
When this bit is set, the MAC disables the watchdog
timer on the receiver. The MAC can receive frames of
up to 16,384 bytes. When this bit is reset, the MAC
does not allow more than 2,048 bytes (10,240 if JE is
set high) of the frame being received. The MAC cuts
off any bytes received after 2,048 bytes.
Value
0x0
0x1
When this bit is set, the MAC disables the jabber
timer on the transmitter. The MAC can transfer
frames of up to 16,384 bytes. When this bit is reset,
the MAC cuts off the transmitter if the application
sends out more than 2,048 bytes of data (10,240 if JE
is set high) during transmission.
Value
0x0
0x1
When this bit is set, the MAC allows frame bursting
during transmission in the GMII half-duplex mode.
Value
0x0
0x1
When this bit is set, the MAC allows Jumbo frames of
9,018 bytes (9,022 bytes for VLAN tagged frames)
without reporting a giant frame error in the receive
frame status.
Value
0x0
0x1
Description
Description
Enable MAC cutoff > 2048Bytes
Disable Watchdog
Description
MAC cuts off TX > 2048
Jabber Timer Disabled
Description
Frame Burst Enable OFF
Frame Burst Enable ON
Description
Report Jumbo Frame Error
Ignore Jumbo Frame Error
17-139
MAC_Configuration
Access Reset
RW 0x0
RW 0x0
RW 0x0
RW 0x0
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