SM320C32-EP Datasheet, PDF (21/44 Pages) Texas Instruments – DIGITAL SIGNAL PROCESSOR

timings for CLKIN [Q = t_c(CI)] (see Figure 14)
NO.
1 tf(CI)†
Fall time, CLKIN
2 tw(CIL)† Pulse duration, CLKIN low
3 tw(CIH)
Pulse duration, CLKIN high
4 tr(CI)†
Rise time, CLKIN
5 tc(CI)†
Cycle time, CLKIN
† _{Minimum CLKIN high-pulse duration at 3.3 MHz is 10 ns.}
* This parameter is not production tested.
5
4
1
CLKIN
SM320C32ĆEP
DIGITAL SIGNAL PROCESSOR
SGUS038 − AUGUST 2002
TEST
CONDITIONS
Q = min
Q = min
320C32-50
MIN MAX
5*
7
8†
5*
20 303
320C32-60
MIN MAX
4*
6
6†
4*
16.67 303
UNIT
ns
ns
ns
ns
ns
3
2
Figure 14. CLKIN Timing
switching characteristics for H1 and H3 over recommended operating conditions (unless
otherwise noted) (see Figure 15)
NO.
PARAMETER
6 tf(H)
Fall time, H1 / H3
7 tw(HL)
Pulse duration, H1 / H3 low
8 tw(HH)
Pulse duration, H1 / H3 high
9 tr(H)
Rise time, H1 / H3
9.1 td(HL-HH) Delay time, H1 / H3 low to H1 / H3 high
10 tc(H)
Cycle time, H1 / H3
* This parameter is not production tested.
TEST
CONDITIONS
320C32-50
MIN MAX
3
Q−5
Q−6
3
0*
4
40 606
320C32-60
MIN MAX
3
Q−4
Q−5
3
0*
4
33.33 606
UNIT
ns
ns
ns
ns
ns
ns
• POST OFFICE BOX 1443 HOUSTON, TEXAS 77251−1443
21