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DP83266 Datasheet(PDF) 126 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Part # DP83266
Description  MACSITM Device (FDDI Media Access Controller and System Interface)
PDF  152 Pages
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Manufacturer  NSC [National Semiconductor (TI)]
Direct Link  http://www.national.com
Logo NSC - National Semiconductor (TI)

DP83266 Datasheet(HTML) 126 Page - National Semiconductor (TI)

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70 Control Information (Continued)
Confirmation Status Message Descriptor (CNF)
A Confirmation Status Message (CNF) describes the result of a Request operation
A more detailed description of the encoding of the RS bits is given in
Figure 7-8
31
30
29
28
27
24
23
16
15
8
7
0
RS
FRA
FRS
TFC
CFC
Word 0
F-L
UID
FC
CS
RES
Word 1
Bit
Symbol
Description
Word 0
D7 – D0
CFC
Confirmed Frame Count
Number of confirmed frames Valid only for Full Confirmation This
count is cumulative for Fint
D15 – D13
TFC
Transmitted Frame Count
Number of frames successfully transmitted by the MACSI device
Valid for all confirmation classes This count is cumulative for Tint and Fint
D23 – D16
FRS
Frame Status
This field is valid only for Full Confirmation and if the frame ended with an ED
D17 – D16
C
C Indicator
00
none
01
R
10
S
11
T
D19 – D18
A
A Indicator
00
none
01
R
10
S
11
T
D21 – D20
E
E Indicator
00
none
01
R
10
S
11
T
D22
VFCS
Valid FCS
0
FCS field was invalid
1
FCS field was valid
D23
VDL
Valid Date Length
0
Data length was invalid
1
Data length was valid
126



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