TMS320VC5420
FIXED-POINT DIGITAL SIGNAL PROCESSOR
SPRS080C – MARCH 1999 – REVISED APRIL 2000
external flag (XF), and timer output (TOUT) timing
switching characteristics over recommended operating conditions for external flag (XF) and TOUT
[H = 0.5 t
] (see Figure 24 and Figure 25)
c(CO)
PARAMETER
MIN
MAX
UNIT
Delay time, CLKOUT low to XF high
Delay time, CLKOUT low to XF low
Delay time, CLKOUT high to TOUT high
Delay time, CLKOUT high to TOUT low
Pulse duration, TOUT
0
3
3
5
5
t
ns
d(XF)
0
0
t
t
t
ns
ns
ns
d(TOUTH)
d(TOUTL)
w(TOUT)
0
2H–2
CLKOUT
t
d(XF)
XF
Figure 24. External Flag (XF) Timing
CLKOUT
t
t
d(TOUTL)
d(TOUTH)
TOUT
t
w(TOUT)
Figure 25. Timer (TOUT) Timing
56
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