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DP83266 Datasheet(PDF) 124 Page - National Semiconductor (TI) |
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DP83266 Datasheet(HTML) 124 Page - National Semiconductor (TI) |
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124 / 152 page  70 Control Information (Continued) RQCLS RQCLS Class THT Token Token Notes Value Name Type Capture Issue 0000 None None none none 0001 Apr1 Async pri1 E non-r non-r 0010 Reserved Reserved 0011 Reserved Reserved 0100 Syn Sync D any capt 1 0101 Imm Immed D none none 4 0110 ImmN Immed D none non-r 4 0111 ImmR Immed D none restr 4 1000 Asyn Async E non-r non-r 1001 Rbeg Restricted E non-r restr 2 3 1010 Rend Restricted E restr non-r 2 1011 Rcnt Restricted E restr restr 2 1100 AsynD Async D non-r non-r 1101 RbegD Restricted D non-r restr 2 3 1110 RendD Restricted D restr non-r 2 1111 RcntD Restricted D restr restr 2 E e enabled D e disabled non-r e non-restricted restr e restricted capt e captured Note 1 Synchronous Requests are not serviced when bit BCNR of the Ring Event Latch Register is set Note 2 Restricted Requests are not serviced when bit BCNR CLMR or OTRMAC of the Ring Event Latch Register is set Note 3 Restricted Dialogues only begin when a Non-Restricted token has been received and transmitted Note 4 Immediate Requests are serviced when the ring is Non-Operational These requests are serviced from the Data state unless the Request contains a Beacon or Claim FC If a Claim FC is used Immediate Requests are serviced from the Claim State If a Beacon FC is used Immediate Request are serviced from the Beacon State FIGURE 7-6 REQ Descriptor Request Class Encoding R F I E Confirmation Class x 0 0 0 Invalid (consistency failure) x x 1 0 Invalid (consistency failure) 0 1 0 0 None Confirmation only on exception 0 0 0 1 Trend Transmitter confirm CNF on exception or completion 0 0 1 1 Tint Transmitter confirm CNF on exception completion or intermediate 0 1 0 1 Fend Full Confirm CNF on exception or completion 0 1 1 1 Fint Full Confirm CNF on exception completion or intermediate 1 1 0 0 NoneR Confirmation only on exception repeat frame 1 0 0 1 TendR Transmitter confirm CNF on exception or completion repeat frame 1 0 1 1 TintR Transmitter confirm CNF on exception completion or intermediate repeat frame 1 1 0 1 FendR Full confirmation CNF on exception or completion repeat frame 1 1 1 1 FintR Full Confirmation CNF on exception completion or intermediate repeat frame FIGURE 7-7 REQ Descriptor Confirmation Class Field Encodings 124 |
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