DP83251 Datasheet, PDF (83/96 Pages) National Semiconductor (TI) – PLAYER Device (FDDI Physical Layer Controller)

7 0 Electrical Characteristics (Continued)
AC Characteristics for PHY Port Interfaces
Symbol
Parameter
Conditions
Min
Typ
Max
Units
T30
LBC to Indicate Data Changes
from TRI-STATE to Data Valid
70
ns
T31
LBC to Indicate Data Changes
from Active to TRI-STATE
70
ns
T32
LBC to Indicate Data Sustain
7
ns
T33
LBC to Valid Indicate Data
45
ns
T34
Request Data to LBC Setup Time
15
ns
T35
Request Data to LBC Hold Time
5
ns
FIGURE 7-7 PHY Port Interface Timing
TL F 10386 – 37
83