82503 Datasheet, PDF (36/45 Pages) Intel Corporation – DUAL SERIAL TRANSCEIVER (DST)

82503
AUI COLLISION TIMINGS
Symbol
Parameter
Min Typ Max Units
t₁₄₅
CLSN Pair Cycle Time
80
t₁₄₆
CLSN Pair Rise Fall Times
t₁₄₇
CLSN Pair Return to Zero from Last Positive Transition 160
t₁₄₈
CLSN Pair High Low Times
35
t₁₄₉
CDT Assertion Time
t₁₅₀
CDT Deassertion Time
t₁₅₁
CRS Deassertion Time (Intel Mode Only RCV Pair Idle)
118
ns
10
ns
ns
70
ns
75
ns
300
ns
450
ns
Figure 36 AUI Collision Timings
290421 – 35
AUI NOISE FILTER TIMINGS
Symbol
Parameter
Min Typ Max Units
t₁₅₂
RCV Pair Noise Filter Pulse Width Accept ( ^b285 mV)
25
ns
t₁₅₃
CLSN Pair Noise Filter Pulse Width Accept ( ^b285 mV) 25
ns
Figure 37 AUI Noise Filter Timings
290421 – 36
36