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CDPCLK4 Scheda tecnica(PDF) 238 Page - Altera Corporation

Il numero della parte CDPCLK4
Spiegazioni elettronici  Cyclone III Device Handbook
PDF  274 Pages
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Produttore elettronici  ALTERA [Altera Corporation]
Homepage  http://www.altera.com
Logo ALTERA - Altera Corporation

CDPCLK4 Scheda tecnica(HTML) 238 Page - Altera Corporation

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Chapter 9: Configuration, Design Security, and Remote System Upgrades in the Cyclone III Device Family
Remote System Upgrade
Cyclone III Device Handbook
August 2012
Altera Corporation
Volume 1
Dedicated Remote System Upgrade Circuitry
This section explains the implementation of the Cyclone III device family remote
system upgrade dedicated circuitry. The remote system upgrade circuitry is
implemented in hard logic. This dedicated circuitry interfaces to the user-defined
factory application configurations implemented in the Cyclone III device family logic
array to provide the complete remote configuration solution. The remote system
upgrade circuitry contains the remote system upgrade registers, a watchdog timer,
and state machines that control those components. Figure 9–35 shows the data path of
the remote system upgrade block.
Figure 9–35. Remote System Upgrade Circuit Data Path (1)
Notes to Figure 9–35:
(1) RU_DOUT, RU_SHIFTnLD, RU_CAPTnUPDT, RU_CLK, RU_DIN,RU_nCONFIG, and RU_nRSTIMER signals
are internally controlled by the ALTREMOTE_UPDATE megafunction.
(2) RU_CLK refers to ALTREMOTE_UPDATE megafunction block "clock" input. For more information, refer to the
Remote Update Circuitry (ALTREMOTE_UPDATE) Megafunction User Guide.
Status Register (SR)
Previous
State
Register 2
Bit[30..0]
Previous
State
Register 1
Bit[30..0]
Current
State
Logic
Bit[31..0]
Internal Oscillator
Control Register
Bit [38..0]
Logic
Update Register
Bit [38..0]
update
Logic
Bit [40..39]
dout
din
Bit [38..0]
dout
din
capture
Shift Register
clkout
capture
update
Logic
clkin
RU_DIN
RU_SHIFTnLD
RU_CAPTnUPDT
RU_CLK (2)
RU_DOUT
RU_nRSTIMER
Logic Array
RSU
Reconfiguration
State
Machine
User
Watchdog
Timer
RSU
Master
State
Machine
timeout
RU_nCONFIG



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