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DP83255 Datasheet(PDF) 44 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Part # DP83255
Description  PLAYER Device (FDDI Physical Layer Controller)
PDF  96 Pages
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Manufacturer  NSC [National Semiconductor (TI)]
Direct Link  http://www.national.com
Logo NSC - National Semiconductor (TI)

DP83255 Datasheet(HTML) 44 Page - National Semiconductor (TI)

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50 Registers (Continued)
CURRENT STATE COUNT REGISTER (CSCR)
The Current State Count Register takes a snap-shot of the State Counter during every Control Bus Interface read-cycle of this
register
During a Control Bus Interface write-cycle to the Current State Count Register the PLAYER device will set the Control Bus Write
Command Reject bit (CCR) of the Interrupt Condition Register (ICR) to 1 and will ignore a write-cycle
ACCESS RULES
ADDRESS
READ
WRITE
13h
Always
Write Reject
D7
D6
D5
D4
D3
D2
D1
D0
SCLSCD
CSC6
CSC5
CSC4
CSC3
CSC2
CSC1
CSC0
Bit
Symbol
Description
D0–6
CSC0–6
CURRENT STATE COUNT BIT k0–6l
D7
SCLSCD
STATE COUNTER LINE STATE CHANGE DETECTION
44



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