Digital Media System-on-Chip (DMSoC) Product Preview

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PRODUCT PREVIEW
CLKOUT1
1
2
4
4
MXI/CLKIN
5 6
3
MXI/CLKIN
CLKOUT2
1
2
3
4
5
6
4
TMS320DM355
Digital Media System-on-Chip (DMSoC)
SPRS463A – SEPTEMBER 2007 – REVISED SEPTEMBER 2007
Table 5-7. Switching Characteristics Over Recommended Operating Conditions for CLKOUT1
(1) (2)
(see
Figure 5-9 )
DM355
UNI
NO. PARAMETER
T
MIN TYP MAX
1 t
C(CLKOUT1)
Cycle time, CLKOUT1 t
c(MXI1)
ns
2 t
w(CLKOUT1H)
Pulse duration, CLKOUT1 high 0.45P 0.55P ns
3 t
w(CLKOUT1L)
Pulse duration, CLKOUT1 low 0.45P 0.55P ns
4 t
t(CLKOUT1)
Transition time, CLKOUT1 0.05P ns
t
d(MXI1H-
5 Delay time, MXI1/CLKIN1 high to CLKOUT1 high 1 8 ns
CLKOUT1H)
t
d(MXI1L-
6 Delay time, MXI1/CLKIN1I low to CLKOUT1 low 1 8 ns
CLKOUT1L)
(1) The reference points for the rise and fall transitions are measured at V
OL
MAX and V
OH
MIN.
(2) P = 1/CLKOUT1 clock frequency in nanoseconds (ns). For example, when CLKOUT1 frequency is 24 MHz use P = 41. 6 ns.
Figure 5-9. CLKOUT1 Timing
Table 5-8. Switching Characteristics Over Recommended Operating Conditions for CLKOUT2
(1) (2)
(see
Figure 5-10 )
DM355
NO. PARAMETER UNIT
MIN TYP MAX
1 t
C(CLKOUT2)
Cycle time, CLKOUT2 t
c(MXI1)
/3
2 t
w(CLKOUT2H)
Pulse duration, CLKOUT2 high 0.45P 0.55P ns
3 t
w(CLKOUT2L)
Pulse duration, CLKOUT2 low 0.45P 0.55P ns
4 t
t(CLKOUT2)
Transition time, CLKOUT2 0.05P ns
t
d(MXI1H-
5 Delay time, MXI1/CLKIN1 high to CLKOUT2 high 1 8 ns
CLKOUT2H)
t
d(MXI1L-
6 Delay time, MXI1/CLKIN1 low to CLKOUT2 low 1 8 ns
CLKOUT2L)
(1) The reference points for the rise and fall transitions are measured at V
OL
MAX and V
OH
MIN.
(2) P = 1/CLKOUT2 clock frequency in nanoseconds (ns). For example, when CLKOUT2 frequency is 8 MHz use P = 125 ns.
Figure 5-10. CLKOUT2 Timing
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