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TMS320DM647 Folha de dados(PDF) 98 Page - Texas Instruments

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Nome de Peças TMS320DM647
Descrição Electrónicos  Digital Media Processor
PDF  166 Pages
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Fabricante Electrônico  TI [Texas Instruments]
Página de início  http://www.ti.com
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TMS320DM647 Folha de dados(HTML) 98 Page - Texas Instruments

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6.10.3 EMIFA Electrical Data/Timing
AECLKIN
2
3
4
4
5
1
TMS320DM647/TMS320DM648
Digital Media Processor
SPRS372 – MAY 2007
Table 6-29. Timing Requirements for AECLKIN for EMIFA
(1) (2) (see Figure 6-13)
-720
-900
NO.
UNIT
MIN
MAX
1
tc(EKI)
Cycle time, AECLKIN
6(3)
40
ns
2
tw(EKIH)
Pulse duration, AECLKIN high
2.7
ns
3
tw(EKIL)
Pulse duration, AECLKIN low
2.7
ns
4
tt(EKI)
Transition time, AECLKIN
2
ns
5
tJ(EKI)
Period Jitter, AECLKIN
0.02E(4)
ns
(1)
The reference points for the rise and fall transitions are measured at VIL MAX and VIH MIN.
(2)
E = the EMIF input clock (AECLKIN or SYSCLK4) period in ns for EMIFA.
(3)
Minimum AECLKIN cycle times must be met, even when AECLKIN is generated by an internal clock source. Minimum AECLKIN times
are based on internal logic speed; the maximum useable speed of the EMIF may be lower due to AC timing requirements.
(4)
This timing applies only when AECLKIN is used for EMIFA.
Figure 6-13. AECLKIN Timing for EMIFA
Peripheral Information and Electrical Specifications
98
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