T MS 3 20 VC 54 02
F IX EDĆPO I NT DI GI TAL SI G NAL P RO C ES S O R
SPRS079E – OCTOBER 1998 – REVISED AUGUST 2000
instruction acquisition (IAQ), interrupt acknowledge (IACK), external flag (XF), and TOUT timings
(continued)
switching characteristics over recommended operating conditions for XF and TOUT
[H = 0.5 t
] (see Figure 26 and Figure 27)
c(CO)
PARAMETER
MIN
–1
MAX
UNIT
Delay time, CLKOUT low to XF high
Delay time, CLKOUT low to XF low
3
3
t
ns
d(XF)
–1
t
t
t
Delay time, CLKOUT low to TOUT high
Delay time, CLKOUT low to TOUT low
Pulse duration, TOUT
0
0
4
4
ns
ns
ns
d(TOUTH)
d(TOUTL)
w(TOUT)
2H
CLKOUT
t
d(XF)
XF
Figure 26. XF Timing
CLKOUT
TOUT
t
t
d(TOUTL)
d(TOUTH)
t
w(TOUT)
Figure 27. TOUT Timing
53
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