MA28140 datasheet(56/72 Pages) DYNEX

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MA28140

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FAR1S

FAR2S

TMC

TMD

PTD

APPLICATION

Telemetry

System

FAR Status Report Serial Interface

Timing

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+2dL and Tfar6+2dL.

Table 17: FAR Status Report Serial Interface Timings

MA28140 Datasheet(PDF) 56 Page - Dynex Semiconductor

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