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DP83266 Scheda tecnica(PDF) 74 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Il numero della parte DP83266
Spiegazioni elettronici  MACSITM Device (FDDI Media Access Controller and System Interface)
PDF  152 Pages
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Produttore elettronici  NSC [National Semiconductor (TI)]
Homepage  http://www.national.com
Logo NSC - National Semiconductor (TI)

DP83266 Scheda tecnica(HTML) 74 Page - National Semiconductor (TI)

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70 Control Information (Continued)
Interrupt Mask Register (IMR)
The Interrupt Mask Register (IMR) is used to mask bits in the Interrupt Condition Register (ICR) If a bit in Register IMR and the
corresponding bit in Register ICR are set to One the INT0 pin is forced low and causes an interrupt Each bit in the IMR
corresponds to an Event Register or a pair of Event Registers and associated bits
Access Rules
Address
Read
Write
02Fh
Always
Always
Register Bits
D7
D6
D5
D4
D3
D2
D1
D0
ESE
IERR
RES
RES
COE
CIE
TTE
RNG
Bit
Symbol
Description
D7
ESE
Exception Status Event Mask
This bit is used to mask ICRESE
D6
IERR
Internal Error Mask
This bit is used to mask ICRIERR
D5 – D4
RES
Reserved
D3
COE
Counter Overflow Event Mask
This bit is used to mask ICRCOE
D2
CIE
Counter Increment Event Mask
This bit is used to mask ICRCIE
D1
TTE
Token and Timer Event Mask
This bit is used to mask ICRTTE
D0
RNG
Ring Event Mask
This bit is used to mask ICRRNG
74



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