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DP83261 Datasheet(PDF) 38 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Part # DP83261
Description  BMAC Device (FDDI Media Access Controller)
PDF  132 Pages
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Manufacturer  NSC [National Semiconductor (TI)]
Direct Link  http://www.national.com
Logo NSC - National Semiconductor (TI)

DP83261 Datasheet(HTML) 38 Page - National Semiconductor (TI)

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60 Control Information (Continued)
Ring Event Latch Register 1 (RELR1)
The Ring Event Latch Register 1 (RELR1) captures the progress of the Beacon and Claim Processes During the Beacon
Process it records reception of an Other
Beacon or a My
Beacon It also identifies Claim frames as Higher Lower or My
Claim Each bit may be masked via the Ring Event Mask Register 1 (REMR1)
ACCESS RULES
Address
Read
Write
12h
Always
Condition
REGISTER BITS
D7
D6
D5
D4
D3
D2
D1
D0
LOCLM
HICLM
MYCLM
RES
RES
RES
MYBCN
OTRBCN
Bit
Symbol
Description
D0
OTRBCN
Other
Beacon Received
Indicates that an Other
Beacon frame was received
D1
MYBCN
My
Beacon Received
Indicates that a My
Beacon frame was received
D2 – 4
RES
Reserved
D5
MYCLM
My
Claim Received
Indicates that a My
Claim frame was received (This includes the comparison
between the T
Bid
Rec and TREQ as specified in the standard)
D6
HICLM
Higher
Claim Received
Indicates that a Higher
Claim frame was received
D7
LOCLM
Lower
Claim Received
Indicates that a Lower
Claim frame was received
38



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