EP2S180F1020C4 Datasheet, PDF (689/768 Pages) Altera Corporation – Stratix II Device Handbook, Volume 1

Remote System Upgrades with Stratix II and Stratix II GX Devices
Remote System Upgrade With Serial Configuration Devices
Remote system upgrade support in the AS configuration scheme is
similar to support in other schemes, with the following exceptions:
■ The remote system upgrade block provides the AS configuration
controller inside the Stratix II or Stratix II GX FPGA with a 7-bit page
start address (PGM[6..0]) instead of driving the 3-bit page mode
pins (PGM[2..0]) used in FPP, PS, and PPA configuration schemes.
This 7-bit address forms the 24-bit configuration start address
(StAdd[23..0]). Table 8–13 illustrates the start address generation
using the page address registers.
■ The configuration start address for factory configuration is always
set to 24'b0.
■ PGM[2..0] pins on Stratix II devices are not used in AS
configuration schemes and can not be used as regular I/O pins.
■ The Nios ASMI peripheral can be used to update configuration data
within the serial configuration device.
Table 8–13. AS Configuration Start Address Generation
Serial Configuration
Device
Serial Configuration
Device Density
(MB)
EPCS64
64
EPCS16
16
EPCS4
4
Add[23]
0
0
0
PGM[6..0]
(Add[22..16])
MSB[6..0]
00, MSB[4..0]
0000, MSB[2..0]
Add[15..0]
All 0s
All 0s
All 0s
Remote System Upgrade With a MAX II Device or
Microprocessor and Flash Device
This setup requires the MAX II device or microprocessor to support page
addressing. MAX II or microprocessor devices implementing remote
system upgrade should emulate the enhanced configuration device page
mode feature. The PGM[2..0] output pins from the Stratix II or
Stratix II GX device must be sampled to determine which configuration
image is to be loaded into the FPGA.
If the FPGA does not release CONF_DONE after all data has been sent, the
MAX II microprocessor should reset the FPGA back to the factory image
by pulsing its nSTATUS pin low.
Altera Corporation
January 2008
8–29
Stratix II Device Handbook, Volume 2