TMS320VC5441_17 Datasheet, PDF (71/91 Pages) Texas Instruments – Fixed-Point Digital Signal Processor

Electrical Specifications
5.7 External Flag (x_XF), Timer (x_TOUT), and Watchdog Timer Output (x_WTOUT)
Timings
Table 5−6 assumes testing over recommended operating conditions and H = 0.5t_c(CO) (see Figure 5−6,
Figure 5−7, and Figure 5−8).
Table 5−6. External Flag (x_XF), Timer (x_TOUT), and Watchdog Timer Output (x_WTOUT)
Switching Characteristics
PARAMETER
td(XF)
Delay time, CLKOUT high to x_XF high
Delay time, CLKOUT high to x_XF low
td(TOUTH)
td(TOUTL)
tw(TOUT)
Delay time, CLKOUT high to x_TOUT high
Delay time, CLKOUT high to x_TOUT low
Pulse duration, x_TOUT
td(WTOUTH)
td(WTOUTL)
tw(WTOUT)
Delay time, CLKOUT high to x_WTOUT high
Delay time, CLKOUT high to x_WTOUT low
Pulse duration, x_WTOUT
MIN
−1
−1
−1
−1
2H −8
−1
−1
2H − 8
MAX
4
6
4
6
2H
UNIT
ns
ns
ns
ns
4 ns
4 ns
ns
CLKOUT
x_XF
td(XF)
Figure 5−6. External Flag (x_XF) Timing
CLKOUT
td(TOUTH)
x_TOUT
td(TOUTL)
tw(TOUT)
Figure 5−7. Timer (x_TOUT) Timing
CLKOUT
x_WTOUT
td(WTOUTL)
td(WTOUTH)
tw(WTOUT)
Figure 5−8. Watchdog Timer (x_WTOUT) Timing
December 1999 − Revised October 2008
SPRS122F
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