SMJ320C6414 Datasheet, PDF (81/133 Pages) Texas Instruments – FIXED-POINT DIGITAL SIGNAL PROCESSORS

SMJ320C6414, SMJ320C6415, SMJ320C6416
FIXEDĆPOINT DIGITAL SIGNAL PROCESSORS
SGUS050A − JANUARY 2004 − REVISED MARCH 2004
INPUT AND OUTPUT CLOCKS (CONTINUED)
switching characteristics over recommended operating conditions for CLKOUT4^{†‡§}
(see Figure 17)
NO.
PARAMETER
1 tJ(CKO4)
Period jitter, CLKOUT4
2 tw(CKO4H) Pulse duration, CLKOUT4 high
3 tw(CKO4L) Pulse duration, CLKOUT4 low
4 tt(CKO4)
Transition time, CLKOUT4
*This parameter is not production tested.
† _{The reference points for the rise and fall transitions are measured at VOL MAX and VOH MIN.}
‡ _{PH is the high period of CLKIN in ns and PL is the low period of CLKIN in ns.}
§ _{P = 1/CPU clock frequency in nanoseconds (ns)}
CLKMODE = x1, x6, x12
MIN
MAX
0*
±175*
2P − 0.7* 2P + 0.7*
2P − 0.7* 2P + 0.7*
1*
UNIT
ps
ns
ns
ns
Ideal Clock Period
4
2
CLKOUT4
1
3
4
Figure 17. CLKOUT4 Timing
switching characteristics over recommended operating conditions for CLKOUT6^{†‡§}
(see Figure 18)
NO.
PARAMETER
1 tJ(CKO6)
Period jitter, CLKOUT6
2 tw(CKO6H) Pulse duration, CLKOUT6 high
3 tw(CKO6L) Pulse duration, CLKOUT6 low
4 tt(CKO6)
Transition time, CLKOUT6
*This parameter is not production tested.
† _{The reference points for the rise and fall transitions are measured at VOL MAX and VOH MIN.}
‡ _{PH is the high period of CLKIN in ns and PL is the low period of CLKIN in ns.}
§ _{P = 1/CPU clock frequency in nanoseconds (ns)}
CLKMODE = x1, x6, x12
MIN
MAX
0*
±175*
3P − 0.7* 3P + 0.7*
3P − 0.7* 3P + 0.7*
1*
UNIT
ps
ns
ns
ns
Ideal Clock Period
4
2
CLKOUT6
1
3
4
Figure 18. CLKOUT6 Timing
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