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DP83256 датащи(PDF) 67 Page - Texas Instruments

номер детали DP83256
подробное описание детали  PLAYER(TM) Device (FDDI Physical Layer Controller)
PDF  146 Pages
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производитель  TI1 [Texas Instruments]
домашняя страница  http://www.ti.com
Logo TI1 - Texas Instruments

DP83256 датащи(HTML) 67 Page - Texas Instruments

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50 Registers (Continued)
522 LINK ERROR THRESHOLD REGISTER (LETR)
The Link Error Threshold Register contains the start value for the Link Error Monitor Counter It is an 8-bit down-counter which
decrements if link errors are detected
When the Counter reaches 0 the Link Error Monitor Threshold Register value is loaded into the Link Error Monitor Counter and
the Link Error Monitor Threshold bit (LEMT) of the Interrupt Condition Register (ICR) is set to one
The Link Error Monitor Threshold Register value is also loaded into the Link Error Monitor Counter during every Control Bus
Interface write cycle of LETR
The counter is initialized to 0 during the reset process (ie ERSTeGND)
ACCESS RULES
ADDRESS
READ
WRITE
15h
Always
Always
D7
D6
D5
D4
D3
D2
D1
D0
LET7
LET6
LET5
LET4
LET3
LET2
LET1
LET0
Bit
Symbol
Description
D0 – D7
LET0 – LET7
LINK ERROR THRESHOLD BIT k0–7l
Start value for the Link Error Monitor Counter
LET0 is the Least Significant Bit (LSB)
66



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