EP2S130F1020I4 Datasheet, PDF (599/768 Pages) List of Unclassifed Manufacturers – Stratix II Device Handbook, Volume 1

Configuring Stratix II and Stratix II GX Devices
PS Configuration Using a MAX II Device as an External Host
In the PS configuration scheme, a MAX II device can be used as an
intelligent host that controls the transfer of configuration data from a
storage device, such as flash memory, to the target Stratix II or
Stratix II GX device. Configuration data can be stored in RBF, HEX, or
TTF format. Figure 7–17 shows the configuration interface connections
between a Stratix II or Stratix II GX device and a MAX II device for single
device configuration.
Figure 7–17. Single Device PS Configuration Using an External Host
Memory
ADDR DATA0
(1) VCC
VCC (1)
10 k Ω 10 k Ω
Stratix II Device
External Host
(MAX II Device or
Microprocessor)
GND
CONF_DONE
nSTATUS
nCE
nCEO
MSEL3
DATA0
nCONFIG
DCLK
MSEL2
MSEL1
MSEL0
N.C.
V_CC
GND
Note to Figure 7–17:
(1) Connect the pull-up resistor to a supply that provides an acceptable input signal for the device. V_CC should be high
enough to meet the V_IH specification of the I/O on the device and the external host.
Upon power-up, Stratix II and Stratix II GX devices go through a POR.
The POR delay is dependent on the PORSEL pin setting; when PORSEL is
driven low, the POR time is approximately 100 ms, if PORSEL is driven
high, the POR time is approximately 12 ms. During POR, the device
resets, holds nSTATUS low, and tri-states all user I/O pins. Once the
device successfully exits POR, all user I/O pins continue to be tri-stated.
If nIO_pullup is driven low during power-up and configuration, the
user I/O pins and dual-purpose I/O pins will have weak pull-up
resistors which are on (after POR) before and during configuration. If
nIO_pullup is driven high, the weak pull-up resistors are disabled.
1
You can hold nConfig low in order to stop device
configuration.
Altera Corporation
January 2008
7–47
Stratix II Device Handbook, Volume 2