Texas Instruments TMS320C6712D 사용자 설명서
SPRS293A − OCTOBER 2005 − REVISED NOVEMBER 2005
69
POST OFFICE BOX 1443
•
HOUSTON, TEXAS 77251−1443
INPUT AND OUTPUT CLOCKS (CONTINUED)
switching characteristics over recommended operating conditions for ECLKOUT
†‡§
(see Figure 25)
NO.
PARAMETER
−150
UNIT
NO.
PARAMETER
MIN
MAX
UNIT
1
tc(EKO)
Cycle time, ECLKOUT
E − 0.9
E + 0.9
ns
2
tw(EKOH)
Pulse duration, ECLKOUT high
EH − 0.9
EH + 0.9
ns
3
tw(EKOL)
Pulse duration, ECLKOUT low
EL − 0.9
EL + 0.9
ns
4
tt(EKO)
Transition time, ECLKOUT
2
ns
5
td(EKIH-EKOH)
Delay time, ECLKIN high to ECLKOUT high
1
6.5
ns
6
td(EKIL-EKOL)
Delay time, ECLKIN low to ECLKOUT low
1
6.5
ns
† The reference points for the rise and fall transitions are measured at VOL MAX and VOH MIN.
‡ E = ECLKIN period in ns
§ EH is the high period of ECLKIN in ns and EL is the low period of ECLKIN in ns.
§ EH is the high period of ECLKIN in ns and EL is the low period of ECLKIN in ns.
5
6
1
2
3
ECLKIN
ECLKIN
ECLKOUT
4
4
Figure 25. ECLKOUT Timings