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DP83266 Datasheet(PDF) 104 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) 104 Page - National Semiconductor (TI)

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70 Control Information (Continued)
Request Notify Register (RNR)
The Request Notify Register (RNR) is used to enable attentions in the Request Attention Register (RAR) If a bit in Register
RNR is set to One the corresponding bit in Register RAR will be applied to the Master Attention Register which can be used to
generate an interrupt to the host
All bits in this register are set to Zero upon reset
Access Rules
Address
Read
Write
10Fh
Always
Always
Register Bits
D7
D6
D5
D4
D3
D2
D1
D0
USRR0N
RCMR0N
EXCR0N
BRKR0N
USRR1N
RCMR1N
EXCR1N
BRKR1N
Bit
Symbol
Description
D0
BRKR1N
Breakpoint on RCHN1 Notify
This bit is used to enable the BRKR1 bit in Register RAR
D1
EXCR1N
Exception on RCHN1 Notify
This bit is used to enable the EXCR1 bit in Register RAR
D2
RCMR1N
Request Complete on RCHN1 Notify
This bit is used to enable the RCMR1 bit in Register RAR
D3
USRR1N
Unserviceable Request on RCHN1 Notify
This bit is used to enable the USRR1 bit in Register RAR
D4
BRKR0N
Breakpoint on RCHN0 Notify
This bit is used to enable the BRKR0 bit in Register RAR
D5
EXCR0N
Exception on RCHN0 Notify
This bit is used to enable the EXCR0 bit in Register RAR
D6
RCMR0N
Request Complete on RCHN0 Notify
This bit is used to enable the RCMR0 bit in Register RAR
D7
USRR0N
Unserviceable Request on RCHN0 Notify
This bit is used to enable the USRR0 bit in Register RAR
104



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