EP3C16F256I7N Altera, EP3C16F256I7N Datasheet - Page 355

• Manufacturer Part Number: EP3C16F256I7N
• Description: Cyclone III
• Manufacturer: Altera

Altera Corporation-Preliminary
March 2007
Notes to
(1)
(2)
30
29
28
27
26
25:24
23:0
Status Register Bit
Table 12–8. Remote System Upgrade Previous State Register 2 Contents In Status Register
The MSEL pin settings are in the AS or AP configuration scheme.
Bit definitions are the same as previous state register 1, except all fields reflect the current state when a
reconfiguration source caused the Cyclone III device to leave the application configuration before the previous
application configuration.
Table
12–8:
nCONFIG
CRC Error source
nSTATUS
User watchdog timer source
RSU
Master State Machine current state The state of the master state machine when the
Boot address
nCONFIG
Table 12–8
status register when the MSEL pin settings are set to AS or AP scheme.
The status register bit in the table shows the bit positions within a 31-bit
register.
fields reflect the current state when a reconfiguration source caused the
Cyclone III device to leave the application configuration before the
previous application configuration.
If a capture is done inappropriately, for example capturing a previous
state before the system has entered remote update application
configuration for the first time, a value will be output from the shift
register to indicate that capture was incorrectly called.
Remote System Upgrade State Machine
The remote system upgrade control and update registers have identical
bit definitions, but serve different roles (refer to
registers can only be updated when the device is loaded with a factory
configuration image, the update register writes are controlled by the user
logic, and the control register writes are controlled by the remote system
upgrade state machine.
source
source
Definition
source
Table 12–8
describes the contents of the previous state register 2 in the
has the same bit definitions as
Remote System Upgrade With Cyclone III Devices
The address used by the AS or AP configuration
One-hot, active high field that describes the
reconfiguration source that caused the Cyclone III
device to leave the previous application
configuration. In the event of a tie, the higher bit
order indicates precedence. For example, if
nCONFIG
reconfiguration state machine at the same time, the
nCONFIG
reconfiguration event occurred that caused the
Cyclone III device to leave the previous application
configuration.
scheme to load the previous application
configuration.
Cyclone III Device Handbook, Volume 1
and RSU
precedes the RSU
Description
nCONFIG
Table
Table
nCONFIG
reach the
12–2). While both
12–7, except all
Notes
.
(1),
12–15
(2)