SMJ320LC549 Datasheet, PDF (33/52 Pages) Texas Instruments – FIXED-POINT DIGITAL SIGNAL PROCESSOR

SMJ320LC549
FIXEDĆPOINT DIGITAL SIGNAL PROCESSOR
SGUS032B – OCTOBER 2002 – REVISED MAY 2003
instruction acquisition (IAQ), interrupt acknowledge (IACK), external flag (XF), and TOUT timings
(continued)
switching characteristics over recommended operating conditions for external flag (XF) and TOUT
[H = 0.5 t_c(CO)] (see Figure 19 and Figure 20)
PARAMETER
549-60
UNIT
MIN MAX
td(XF)
Delay time, XF high after CLKOUT low
Delay time, XF low after CLKOUT low
–1*
6
ns
–1*
6
td(TOUTH) Delay time, TOUT high after CLKOUT low
td(TOUTL) Delay time, TOUT low after CLKOUT low
tw(TOUT) Pulse duration, TOUT
*Not production tested.
–1*
–1*
2H–3*
6 ns
5 ns
ns
CLKOUT
XF
td(XF)
Figure 19. External Flag (XF) Timing
CLKOUT
TOUT
td(TOUTH)
td(TOUTL)
tw(TOUT)
Figure 20. TOUT Timing
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