TI380FPA Datasheet, PDF (22/24 Pages) Texas Instruments – PACKETBLASTER™

TI380FPA
PACKETBLASTERā
SPWS011A − MARCH 1995 − REVISED AUGUST 1995
PARAMETER MEASUREMENT INFORMATION
FPA-bus arbitration: FPA releases control of bus
t_M is the cycle time of one-eighth of a local-memory cycle (20.83 ns minimum).
NO.
74 Hold time, FPA after MBCLK1 falling edge, bus release
74a Hold time, MBEN valid after MBCLK1 falling edge, bus release
75 Delay time, MBCLK1 falling edge to FPA in the high-impedance state, bus release
75a Delay time, MBCLK1 falling edge to MBEN in the high-impedance state, bus release
MIN
2.5tM − 13
3tM − 13
MAX
2.5tM
3tM
UNIT
ns
ns
ns
ns
MBCLK1
74
MAX0,
MAX2
MAXPH,
MAXPL,
MADH0 −MADH7
,
MADL0 −MADL7
MRAS
MCAS
MW
MOE
MDDIR
MAL
MBEN
75
74a
75a
Figure 14. FPA-Bus Arbitration: FPA Releases Control of Bus
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