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DP83266 Datasheet(PDF) 107 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) 107 Page - National Semiconductor (TI)

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70 Control Information (Continued)
Request Channel 0 and 1 Expected Frame Status Registers (R0EFSR and R1EFSR)
The Expected Frame Status Registers (R0EFSR and R1EFSR) define the matching criteria used for Full Confirmation of
returning frames on each Request Channel A returning frame must meet the programmed criteria to be counted as a matching
returning frame on each Request Channel A returning frame must meet the programmed criteria to be counted as a matching
returning frame
These registers are not altered upon reset
Access Rules
Address
Read
Write
112–113h
Always
Always
Register Bits
D7
D6
D5
D4
D3
D2
D1
D0
VDL
VFCS
EE1
EE0
EA1
EA0
EC1
EC0
Bit
Symbol
Description
D1–D0
EC1–0
Expected C Indicator
EC1
EC0
Value
0
0
Any
01
R
10
S
1
1
RorS
D3–D2
EA1–0
Expected A Indicator
EA1
EA0
Value
0
0
Any
01
R
10
S
1
1
RorS
D5–D4
EE1–0
Expected E Indicator
EE1
EE0
Value
0
0
Any
01
R
10
S
1
1
RorS
D6
VFCS
Valid FCS
When this bit is set returning frames must have a valid FCS field to meet the confirmation
criteria
D7
VDL
Valid Data Length
When this bit is set returning frames must have a valid VDL field to meet the
confirmation criteria
107



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