DK-DEV-5SGXEA7/ES Altera, DK-DEV-5SGXEA7/ES Datasheet - Page 332

• Manufacturer Part Number: DK-DEV-5SGXEA7/ES
• Description: KIT DEV STRATIX V FPGA 5SGXEA7
• Manufacturer: Altera
• Series: Stratix® Vr
• Type: FPGAr

Specifications of DK-DEV-5SGXEA7/ES

• Contents: Board
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• For Use With/related Products: Stratix® V 5SGXEA7
• Other names: 544-2725

9–52
Stratix V Device Handbook Volume 2: Device Interfaces and Integration
Enabling the Remote System Update Feature
The user watchdog timer is a counter that counts down from the initial value loaded
into the remote system upgrade control register by the factory configuration. The
counter is 29 bits wide and has a maximum count value of 2
user watchdog timer value, specify only the most significant 12 bits. The granularity
of the timer setting is 2
12.5-MHz internal oscillator.
internal oscillator.
Table 9–18. 12.5-MHz Internal Oscillator Specifications
The user watchdog timer begins counting after the application configuration enters
device user mode. This timer must be periodically reset by the application
configuration before the timer expires by asserting RU_nRSTIMER. If the application
configuration does not reload the user watchdog timer before the count expires, a
time-out signal is generated by the remote system upgrade dedicated circuitry. This
causes the device to reload the factory configuration image and update the status
register to reflect the watchdog timer time-out error.
You can enable remote update for Stratix V devices in the Quartus II software before
design compilation (in the Compiler Settings menu). In remote update mode, the
auto-restart configuration after error option is always enabled. To enable remote
update in the project’s compiler settings in the Quartus II software, follow these steps:
1. On the Assignments menu, click Device. The Settings dialog box appears.
2. Click Device and Pin Options. The Device and Pin Options dialog box appears.
3. Click the Configuration panel.
4. From the Configuration scheme list, select Active Serial x1 (you can also use
5. From the Configuration mode list, select Remote (refer to
6. Click OK.
Note to
(1) These values are preliminary.
Configuration Device) (refer to
Minimum
Table
5.3
9–18:
Chapter 9: Configuration, Design Security, and Remote System Upgrades in Stratix V Devices
17
cycles. The cycle time is based on the frequency of the
Table 9–18
Typical
7.9
Figure
lists the operating range of the 12.5-MHz
9–32).
Maximum
(Note 1)
12.5
29
Figure
. When specifying the
May 2011 Altera Corporation
Remote System Upgrades
9–32).
Units
MHz