EP4CE55F23I8L Altera, EP4CE55F23I8L Datasheet - Page 238
EP4CE55F23I8L
Manufacturer Part Number
EP4CE55F23I8L
Description
IC CYCLONE IV FPGA 55K 484FBGA
Manufacturer
Altera
Series
CYCLONE® IV Er
Datasheets
1.EP4CGX15BN11C8N.pdf
(44 pages)
2.EP4CGX15BN11C8N.pdf
(14 pages)
3.EP4CGX15BN11C8N.pdf
(478 pages)
4.EP4CGX15BN11C8N.pdf
(10 pages)
Specifications of EP4CE55F23I8L
Number Of Logic Elements/cells
55856
Number Of Labs/clbs
3491
Total Ram Bits
2340000
Number Of I /o
324
Voltage - Supply
0.97 V ~ 1.03 V
Mounting Type
Surface Mount
Operating Temperature
-40°C ~ 100°C
Package / Case
484-FBGA
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Number Of Gates
-
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8–72
Cyclone IV Device Handbook, Volume 1
If there is an error while loading the application configuration, the remote system
upgrade status register is written by the dedicated remote system upgrade circuitry of
the Cyclone IV device to specify the cause of the reconfiguration.
The following actions cause the remote system upgrade status register to be written:
■
■
■
■
The Cyclone IV device automatically loads the factory configuration when an error
occurs. This user-designed factory configuration reads the remote system upgrade
status register to determine the reason for reconfiguration. Then the factory
configuration takes the appropriate error recovery steps and writes to the remote
system upgrade control register to determine the next application configuration to be
loaded.
When Cyclone IV devices successfully load the application configuration, they enter
user mode. In user mode, the soft logic (the Nios II processor or state machine and the
remote communication interface) assists the Cyclone IV device in determining when a
remote system update is arriving. When a remote system update arrives, the soft logic
receives the incoming data, writes it to the configuration memory device and triggers
the device to load the factory configuration. The factory configuration reads the
remote system upgrade status register, determines the valid application configuration
to load, writes the remote system upgrade control register accordingly, and starts
system reconfiguration.
nSTATUS driven low externally
Internal cyclical redundancy check (CRC) error
User watchdog timer time-out
A configuration reset (logic array nCONFIG signal or external nCONFIG pin
assertion)
Chapter 8: Configuration and Remote System Upgrades in Cyclone IV Devices
© December 2010 Altera Corporation
Remote System Upgrade
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