Cypress S6J3200 Series, Manual

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CHAPTER 21:Ethernet MAC
S6J3200 Series Hardware Manual Document Number: 002-04852 Rev. *G 733
4.78.
Length Field Frame Errors Register
(ETHERNETn_rx_length_errors)
Description of Length Field Frame Errors register is shown.
REGISTER_NAME ETHERNETn_rx_length_errors
OFFSET 0x194
ACCESS_SIZE W
MULTIPLE
NUMERIC_TYPE
OTHER
BIT_OFFSET 31 30 29 28 27 26 25 24
BIT_NAME Reserved
ACCESS_TYPE R0,WX
PROT_TYPE Wp
INITIAL_VALUE 0x00
BIT_OFFSET 23 22 21 20 19 18 17 16
BIT_NAME Reserved
ACCESS_TYPE R0,WX
PROT_TYPE Wp
INITIAL_VALUE 0x00
BIT_OFFSET 15 14 13 12 11 10 9 8
BIT_NAME Reserved count[9:8]
ACCESS_TYPE R0,WX R,WX
PROT_TYPE Wp
INITIAL_VALUE 0x00 0x0
BIT_OFFSET 7 6 5 4 3 2 1 0
BIT_NAME count[7:0]
ACCESS_TYPE R,WX
PROT_TYPE Wp
INITIAL_VALUE 0x00
[bit31:10] Reserved
Always read "0". Writing has no effect.
[bit9:0] count: Length field frame errors
A 10-bit register counting frames received that have a measured length shorter than that extracted from
the length field (bytes 13 and 14). This condition is only counted if the value of the length field is less
than 0x0600 (1536)), the frame is not of excessive length and checking is enabled through bit 16 of the
Network Configuration register.