dp83251 National Semiconductor Corporation, dp83251 Datasheet - Page 88

• Manufacturer Part Number: dp83251
• Description: Player Device Fddi Physical Layer Controller
• Manufacturer: National Semiconductor Corporation

8 0 Detailed Descriptions
8 3 LINK ERRORS
A Link Error is defined as follows
Link Error Event
Set Link Error Flag
Clear Link Error Flag
Where
ILS
ALS
ULS
x
I
H
J
K
V
R
S
T
N
PLS
SD
SB
E
a

e
e
e
e
e
e
e
e
e
e
e
e
e
e
e
e
e
e
e
Logical NOT
Logical OR
Logical AND
Idle Line State
Active Line State
Unknown Line State
Any symbol
Idle symbol
Halt symbol
First Symbol of start delimiter
Second symbol of start delimiter
Violation symbol
Reset symbol
Set symbol
End delimiter symbol
Data symbol converted to 0000 by the PLAY-
ER device Receiver Block in symbol pairs that
contain a data and a control symbol
Previous Line State
Signal Detect
Stuff Byte Byte inserted by EB before a JK
symbol pair for recentering or due to off-axis
JK
e
H E H)
ror Flag
II
E (II
ALS
ULS
a
e
JK)
e
a
SH

ALS

Link Error Flag
E (HH
a
ALS
ULS
(PLS
JK)
a
(I E I


ALS
E SB
TH)

(HH
a
e

a
JK
a

(PLS
HI
ALS)

ILS
a
E SD
a
E (HH
xV
a
(Continued)
NH

ILS
II

e
a
E SD)
a
a

a
Link Er-
a

E SB
ALS
JK)
Vx
RH
JK
ILS
HI
a
a
a
a
a



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