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DM385 датащи(PDF) 175 Page - Texas Instruments

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номер детали DM385
подробное описание детали  DM385 and DM388 DaVinci??Digital Media Processor
PDF  281 Pages
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производитель  TI [Texas Instruments]
домашняя страница  http://www.ti.com
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DM385 датащи(HTML) 175 Page - Texas Instruments

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RMREFCLK
1
2
RM
− M
MCRS
RM
RXD1 R RXD0,
R
DV,
RXER (inputs)
RMREFCLK
(Input)
1
3
4
4
2
DM385, DM388
www.ti.com
SPRS821D – MARCH 2013 – REVISED DECEMBER 2013
8.6.2.2
EMAC RMII Electrical Data/Timing
Table 8-16. Timing Requirements for EMAC[x]_RMREFCLK - RMII Operation
(see Figure 8-13)
OPP100/OPP120/Turbo/Nitro
NO.
UNIT
MIN
MAX
1
tc(RMREFCLK)
Cycle time, EMAC[x]_RMREFCLK
19.999
20.001
ns
2
tw(RMREFCLKH)
Pulse duration, EMAC[x]_RMREFCLK high
7
13
ns
3
tw(RMREFCLKL)
Pulse duration, EMAC[x]_RMREFCLK low
7
13
ns
4
tt(RMREFCLK)
Transition time, EMAC[x]_RMREFCLK
3
ns
Figure 8-13. RMREFCLK Timing RMII Operation
Table 8-17. Timing Requirements for EMAC RMII Receive
(see Figure 8-13)
OPP100/OPP120/
Turbo/Nitro
NO.
UNIT
MIN
MAX
tsu(RMRXD-RMREFCLK)
Setup time, receive selected signals valid before
1
tsu(RMCRSDV-RMREFCLK)
4
ns
EMAC[x]_RMREFCLK
tsu(RMRXER-RMREFCLK)
th(RMREFCLK-RMRXD)
Hold time, receive selected signals valid after
2
th(RMREFCLK-RMCRSDV)
2
ns
EMAC[x]_RMREFCLK
th(RMREFCLK-RMRXER)
Figure 8-14. EMAC Receive Interface Timing RMII Operation
Copyright © 2013, Texas Instruments Incorporated
Peripheral Information and Timings
175
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Product Folder Links: DM385 DM388



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