CHAPTER 21:Ethernet MAC
732
S6J3200 Series Hardware Manual Document Number: 002-04852 Rev. *G
4.77.
Frame Check Sequence Errors Register (ETHERNETn_fcs_errors)
Description of Frame Check Sequence Errors register is shown.
REGISTER_NAME
ETHERNETn_fcs_errors
OFFSET
0x190
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: Frame check sequence errors
A 10-bit register counting frames that are an integral number of bytes, have bad CRC and are between
64 and 1518 bytes in length (1536 if bit 8 set in Network Configuration register, 10240 bytes if bit 3 is
set in the Network Configuration register). This register is also incremented if a symbol error is detected
and the frame is of valid length and has an integral number of bytes. This register is incremented for a
frame with bad FCS, regardless of whether it is copied to memory due to ignore FCS mode being
enabled in bit 26 of the Network Configuration register.
Содержание S6J3200 Series
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