SMJ320C31_07 Datasheet, PDF (18/59 Pages) Texas Instruments – DIGITAL SIGNAL PROCESSORS

SMJ320C31, SMJ320LC31, SMQ320LC31
DIGITAL SIGNAL PROCESSORS
SGUS026G − APRIL 1998 − REVISED SEPTEMBER 2006
timing
Timing specifications apply to the SMJ320C31 and SMJ320LC31.
X2/CLKIN, H1, and H3 timing
The following table defines the timing parameters for the X2/CLKIN, H1, and H3 interface signals.
timing parameters for X2/CLKIN, H1, H3 (see Figure 10, Figure 11, Figure 12, and Figure 13)
NO.
1 tf(CI)
Fall time, CLKIN
2 tw(CIL)
Pulse duration, CLKIN low tc(CI) = min
3 tw(CIH)
Pulse duration, CLKIN high tc(CI) = min
4 tr(CI)
Rise time, CLKIN
5 tc(CI)
Cycle time, CLKIN
6 tf(H)
Fall time, H1 and H3
7 tw(HL)
Pulse duration, H1 and H3 low
8 tw(HH)
Pulse duration, H1 and H3 high
9 tr(H)
Rise time, H1 and H3
10
td(HL-HH)
Delay time. from H1 low to H3 high or from H3 low to H1
high
11 tc(H)
Cycle time, H1 and H3
† _{P = tc(CI)}
* This parameter is not production tested.
’C31-40
’LC31-40
MIN MAX
5*
9
9
5*
25 303
3
P−5†
P−6†
3
’C31-50
MIN
7
7
20
P −5†
P −6†
MAX
5*
5*
303
3
3
’C31-60
MIN
6
6
16.67
P −4†
P −5†
MAX
4*
4*
303
3
3
0
4
0
4
0
4
50 606
40 606 33.3 606
UNIT
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
5
4
1
X2/CLKIN
3
2
Figure 10. Timing for X2/CLKIN
18
• POST OFFICE BOX 1443 HOUSTON, TEXAS 77251−1443