ep3c120f780c8nes Altera Corporation, ep3c120f780c8nes Datasheet - Page 259

• Manufacturer Part Number: ep3c120f780c8nes
• Description: Cyclone Iii Device Family
• Manufacturer: Altera Corporation

Altera Corporation-Preliminary
March 2007
To configure four identical Cyclone III devices with the same SRAM
Object File, you must set up the chain similar to the example shown in
Figure
should be set to select AS configuration. The other three slave devices are
set up for concurrent configuration and its MSEL pins should be set to
select PS configuration. The nCEO pin from the master device drives the
nCE input pins on all three slave devices, as well as the DATA and DCLK
pins connect in parallel to all four devices. During the first configuration
cycle, the master device reads its configuration data from the serial
configuration device while holding nCEO high. After completing its
configuration cycle, the master drives nCE low and transmits the second
copy of the configuration data to all three slave devices, configuring them
simultaneously.
The advantage of using the setup in
different SRAM Object File for the Cyclone III master device. However,
all the Cyclone III slave devices must be configured with the same SRAM
Object File. You can either compress or uncompress the SRAM Object
Files in this configuration method.
1
10–5. The first device is the master device and its MSEL pins
You can still use this method if the master and slave Cyclone III
devices use the same SRAM Object File.
Active Serial Configuration (Serial Configuration Devices)
Cyclone III Device Handbook, Volume 1
Figure 10–5
is that you can have a
10–23