MA28140 Datasheet, PDF (56/72 Pages) Dynex Semiconductor – Packet Telecommand Decoder

MA28140
FAR Status Report Serial Interface
PTD
FAR1S
FAR2S
TMC
TMD
APPLICATION
Telemetry
System
T imin g
De scription
Min
Typ
Max
Tfar1 (1)
FARS falling to TMC falling
16 Tck
Tfar2
TMC high pulse width between octets
2 Tck
Tfar3
TMC setup to FARS
0 ns
Tfar4
FAR1S rising to FAR2S falling
2 Tck
Tfar5
FAR2S rising to FAR1S falling
4 Tck
Tfar6 (1)
FARS falling to TMD valid (bit 0)
15 Tck
Ttmch
TMC high pulse width
Tck
Ttmcl
TMC low pulse width
Tck
Ttmc
TMC period
4 Tck
Tfarout
TMC falling to TMD valid
1 Tck
2 Tck
Note (1): These timings are guaranteed when there is no request for the local bus through the BRQN input.
In addition when using slow memories, the local memory accesses may be delayed by using the LACK
input of duration d_L (defined by the user). In this case Tfar1 and Tfar6 become Tfar1+2d_L and Tfar6+2d_L.
Table 17: FAR Status Report Serial Interface Timings
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