Ethernet Subsystem Registers
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14.5.7.5 RX_MAXLEN Register (offset = 10h) [reset = 5EEh]
RX_MAXLEN is shown in Figure 14-177 and described in Table 14-193.
CPGMAC_SL RX MAXIMUM LENGTH REGISTER
Figure 14-177. RX_MAXLEN Register
31 30 29 28 27 26 25 24
Reserved
R-0h
23 22 21 20 19 18 17 16
Reserved
R-0h
15 14 13 12 11 10 9 8
Reserved RX_MAXLEN
R-0h R/W-5EEh
7 6 5 4 3 2 1 0
RX_MAXLEN
R/W-5EEh
LEGEND: R/W = Read/Write; R = Read only; W1toCl = Write 1 to clear bit; -n = value after reset
Table 14-193. RX_MAXLEN Register Field Descriptions
Bit Field Type Reset Description
31-14 Reserved R 0h
13-0 RX_MAXLEN R/W 5EEh RX Maximum Frame Length - This field determines the maximum
length of a received frame.
The reset value is 1518 (dec).
Frames with byte counts greater than rx_maxlen are long frames.
Long frames with no errors are oversized frames.
Long frames with CRC, code, or alignment error are jabber frames.
The maximum value is 16,383.
1418
Ethernet Subsystem SPRUH73H–October 2011–Revised April 2013
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