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| 型號(hào)： | OR2T04A-4BC100 |
| 廠商： | Electronic Theatre Controls, Inc. |
| 元件分類： | FPGA |
| 英文描述： | Field-Programmable Gate Arrays |
| 中文描述： | 現(xiàn)場(chǎng)可編程門陣列 |
| 文件頁(yè)數(shù)： | 43/192頁(yè) |
| 文件大?。?/td> | 3148K |
| 代理商： | OR2T04A-4BC100 |
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Lucent Technologies Inc.
43
Data Sheet
June 1999
ORCA Series 2 FPGAs
FPGA States of Operation
(continued)
5-2761(F).r4
Figure 38. Start-Up Waveforms
Partial Reconfiguration
All ORCAdevice families have been designed to allow
a partial reconfiguration of the FPGA at any time. This
is done by setting a bit stream option in the previous
configuration sequence that tells the FPGA to not reset
all of the configuration RAM during a reconfiguration.
Then only the configuration frames that are to be modi-
fied need to be rewritten, thereby reducing the configu-
ration time.
Other bit stream options are also available that allow
one portion of the FPGA to remain in operation while a
partial reconfiguration is being done. If this is done, the
user must be careful to not cause contention between
the two configurations (the bit stream resident in the
FPGA and the partial reconfiguration bit stream) as the
second reconfiguration bit stream is being loaded.
Other Configuration Options
Configuration options used during device start-up were
previously discussed in the FPGA States of Operation
section of this data sheet. There are many other config-
uration options available to the user that can be set
during bit stream generation in ORCAFoundry. These
include options to enable boundary scan, readback
options, and options to control and use the internal
oscillator after configuration.
Other useful options that affect the next configuration
(not the current configuration process) include options
to disable the global set/reset during configuration, dis-
able the 3-state of I/Os during configuration, and dis-
able the reset of internal RAMs during configuration to
allow for partial configurations (see above). For more
information on how to set these and other configuration
options, please see the ORCA Foundry documenta-
tion.
Configuration Data Format
The ORCAFoundry Development System interfaces
with front-end design entry tools and provides the tools
to produce a fully configured FPGA. This section dis-
cusses using the ORCAFoundry Development System
to generate configuration RAM data and then provides
the details of the configuration frame format.
The ORCASeries 2 series of FPGAs are enhanced
versions of the ORCAATT2Cxx/ATT2Txx architectures
that provide upward bit stream compatibility for both
series of devices as well as with each other.
Di
F
DONE
ATT3000
I/O
GLOBAL
RESET
C1
C2
C3
C4
F
C1
C2
C3
C4
C1
C2
C3
C4
C1, C2, C3, OR C4
Di + 1
Di
Di + 2
Di + 3
Di + 4
Di + 1
Di
Di + 2
Di + 3
Di + 4
ORCACCLK_SYNC
DONE IN
U1
U2
U3
U4
F
U1
U2
U3
U4
U1
U2
U3
U4
ORCAUCLK_NOSYNC
Di + 1
Di
Di + 2
Di + 3
Di + 4
Di + 1
Di + 2
Di + 3
ORCA UCLK_SYNC
UCLK PERIOD
SYNCHRONIZATION UNCERTAINTY
DONE IN
F
C1
C1
U1, U2, U3, OR U4
DONE
I/O
GSRN
ACTIVE
DONE
I/O
GSRN
ACTIVE
DONE
I/O
GSRN
ACTIVE
DONE
I/O
GSRN
ACTIVE
UCLK
F = finished, no more CLKs required.
CCLK PERIOD
F
ORCACCLK_NOSYNC
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相關(guān)代理商/技術(shù)參數(shù) |
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| OR2T04A-4BC100I | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Field-Programmable Gate Arrays |
| OR2T04A-4BC144 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Field-Programmable Gate Arrays |
| OR2T04A-4BC144I | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Field-Programmable Gate Arrays |
| OR2T04A-4BC160 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Field-Programmable Gate Arrays |
| OR2T04A-4BC160I | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Field-Programmable Gate Arrays |
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