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DP83266 Datasheet(PDF) 86 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) 86 Page - National Semiconductor (TI)

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70 Control Information (Continued)
Frame Received Counter (FRCT)
The Frame Received Counter (FRCT) is specified in the FDDI MAC Standard It is the count of all complete frames received
including MAC frames Void frames and frames stripped by this station
Interrupts are available on increment (CILRFRRCV) and when the 20-bit counter overflows and wraps around (COLRFRRCV)
Access Rules
Address
Read
Write
0A0–0A3h
Always
Stop Mode
Register Bits
D7
D6
D5
D4
D3
D2
D1
D0
FRCT0
Zero
Zero
Zero
Zero
Zero
Zero
Zero
Zero
FRCT1
Zero
Zero
Zero
Zero
CT19
CT18
CT17
CT16
FRCT2
CT15
CT14
CT13
CT12
CT11
CT10
CT9
CT8
FRCT3
CT7
CT6
CT5
CT4
CT3
CT2
CT1
CT0
Error Isolated Counter (EICT)
The Error Isolated Counter (EICT) is specified in the FDDI MAC Standard It is the count of all error frames detected by this
station and no previous station
It is incremented when
1 an FCS error is detected and the received Error Indicator (Er) is not equal to S or
2 a frame of invalid length (ie off-boundary T) is received and Er is not equal to S or
3 Er is not R or S
Interrupts are available on increment (CILRFREI) and when the 20-bit counter overflows and wraps around (COLRFREI)
Access Rules
Address
Read
Write
0A4–0A7h
Always
Stop Mode
Register Bits
D7
D6
D5
D4
D3
D2
D1
D0
EICT0
Zero
Zero
Zero
Zero
Zero
Zero
Zero
Zero
EICT1
Zero
Zero
Zero
Zero
CT19
CT18
CT17
CT16
EICT2
CT15
CT14
CT13
CT12
CT11
CT10
CT9
CT8
EICT3
CT7
CT6
CT5
CT4
CT3
CT2
CT1
CT0
86



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