EP3SE50F780I3N Altera, EP3SE50F780I3N Datasheet - Page 434

• Manufacturer Part Number: EP3SE50F780I3N
• Description: Stratix III
• Manufacturer: Altera

Dedicated Remote System Upgrade Circuitry
12–12
Stratix III Device Handbook, Volume 1
Remote System Upgrade Status Register
The remote system upgrade status register specifies the reconfiguration
trigger condition. The various trigger and error conditions include:
■
■
■
■
■
Figure 12–7
numbers in the figure show the bit positions within a 5-bit register.
Figure 12–7. Remote System Upgrade Status Register
Note to
(1)
CRC
nSTATUS
CORE_nCONFIG
nCONFIG
Wd
Table 12–4. Remote System Upgrade Status Register Contents
Status Register Bit
Cyclic redundancy check (CRC) error during application
configuration
nSTATUS assertion by an external device due to an error
Stratix III device logic array triggered a reconfiguration cycle,
possibly after downloading a new application configuration image
External configuration reset (nCONFIG) assertion
User watchdog timer time out
Logic array reconfiguration forces the system to load the application
configuration data into the Stratix III device. This occurs after the factory
configuration specifies the appropriate application configuration page address
by updating the update register.
(from configuration)
Table
and
12–4:
Wd
4
Table 12–4
(1)
nCONFIG
3
CRC
reconfiguration
nSTATUS
reconfiguration
Device logic array caused
reconfiguration
nCONFIG
reconfiguration
Watchdog timer caused
reconfiguration
specify the contents of the status register. The
error caused
Core_nCONFIG
Definition
caused
caused
2
nSTATUS
1
1 bit '0'
1 bit '0'
1 bit '0'
1 bit '0'
1 bit '0'
POR Reset Value
CRC
Altera Corporation
0
October 2007