dp83261 National Semiconductor Corporation, dp83261 Datasheet - Page 127

• Manufacturer Part Number: dp83261
• Description: Bmac Device Fddi Media Access Controller
• Manufacturer: National Semiconductor Corporation

Appendix A Ring Engine State Machines
A 2 2 MAC TRANSMITTER FOOTNOTES
A 2 2 1 Internal Conditions
(1) ESA
(2) ELA
(3) IRPT
(4)ITC
(5)IRR
(6)ITR
(7) IFCS
(8) EMIND
(9) MAC Reset
(10) Beacon Request
(11) Claim Request
A 2 2 2 Transition Conditions
(1) Usable Token
(2) Capture TK
(3) Immediate Request
(4) Usable Immediate
(5) Send Void
TX Abort
(After FSx
((TX Ready
(TX Pass
(Void Strip
n(TX ED
(nRQ Ready
Ring Operational
((RQ Class
(RQ Class
(RQ Class
n(RQ Class
nITC
RQ Class
nRing Operational
n(TK Received
(RELR Beacon Received
(RQ Class Capture
Option Enable Short Address
Option Enable Long Address
Option Inhibit Repeat
Option Inhibit Token Capture
Option Inhibit Recovery Required
Option Inhibit Token Release
Option Implementer FCS
Option External Matching Indicators
Function MAC Reset
Function Beacon Request
Function Claim Request
l
l
nIRPT
TX Class 4 none))
e
l
l
e
i
(nTELR Ring Latency Valid
e
((Immediate Request
e
immediate
priority
asynchronous
synchronous
restricted
(Usable Token
(Ring Operational
nIRPT)
nRQ Send
e
TX Class
l
nonrestricted
TRT
nRQ Claim
l
l
nMode Run
RELR Claim Received
nRQ Send
l
k
nRELR Beacon Received)
nLate
(nESA
e
l
T Pri RQ Class Priority )
nBeacon Request
nMAC Reset
l
none
Lmax expired)
nTELR Ring Latency Valid
RQ Class Capture
nRQ Beacon
Immediate Request
nELA)
l
nRbeginOK)))))
Early)
(nESA
127
l
l
(Continued)
nELA)
nMAC Reset
nRQ Send))
l
e
FCr L
l
nLate
nFCr L))