Rainbow Electronics AT91CAP9S250A User Manual
Page 839
839
6264A–CAP–21-May-07
AT91CAP9S500A/AT91CAP9S250A
42.5.26.19
SQE Test Errors Register
Register Name:
EMAC_STE
Access Type:
Read/Write
• SQER: SQE test errors
An 8-bit register counting the number of frames where
col
was not asserted within 96 bit times (an interframe gap) of
tx_en
being deasserted in half duplex mode.
42.5.26.20
Received Length Field Mismatch Register
Register Name:
EMAC_RLE
Access Type:
Read/Write
• RLFM: Receive Length Field Mismatch
An 8-bit register counting the number of frames received that have a measured length shorter than that extracted from its
length field. Checking is enabled through bit 16 of the network configuration register. Frames containing a type ID in bytes
13 and 14 (i.e., length/type ID
≥
0x0600) are not counted as length field errors, neither are excessive length frames.
31
30
29
28
27
26
25
24
–
–
–
–
–
–
–
–
23
22
21
20
19
18
17
16
–
–
–
–
–
–
–
–
15
14
13
12
11
10
9
8
–
–
–
–
–
–
–
–
7
6
5
4
3
2
1
0
SQER
31
30
29
28
27
26
25
24
–
–
–
–
–
–
–
–
23
22
21
20
19
18
17
16
–
–
–
–
–
–
–
–
15
14
13
12
11
10
9
8
–
–
–
–
–
–
–
–
7
6
5
4
3
2
1
0
RLFM