EP3SE50F780I3N Altera, EP3SE50F780I3N Datasheet - Page 401

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

Altera Corporation
November 2007
You can use a download cable to configure multiple Stratix III devices by
connecting each device's nCEO pin to the subsequent device's nCE pin.
The first device's nCE pin is connected to GND while its nCEO pin is
connected to the nCE of the next device in the chain. The last device's nCE
input comes from the previous device, while its nCEO pin is left floating.
All other configuration pins (nCONFIG, nSTATUS, DCLK, DATA0, and
CONF_DONE) are connected to every device in the chain. Because all
CONF_DONE pins are tied together, all devices in the chain initialize and
enter user mode at the same time.
In addition, because the nSTATUS pins are tied together, the entire chain
halts configuration if any device detects an error. The Auto-restart
configuration after error option does not affect the configuration cycle
because you must manually restart configuration in the Quartus II
software when an error occurs.
Figure 11–18
download cable.
shows how to configure multiple Stratix III devices with a
Stratix III Device Handbook, Volume 1
Configuring Stratix III Devices
11–41