12–4
Chapter 12: Real-Time ISP and ISP Clamp for MAX II Devices
ISP Clamp
shows the Programmer options in the Options menu.
Figure 12–4.
Programmer Options in the Options Menu
Real-Time ISP with Jam and JBC Players
You can use the Jam or JBC file created from the POF to program a MAX II device in
real-time ISP mode with the Jam or JBC Player.
For real-time ISP with the Jam File and Jam Player, type the following at the
command-line prompt:
jp_23 -aprogram -ddo_real_time_isp=1 <file_name.jam>
For Real-Time ISP with the JBC File and JBC Player, type the following at the
command-line prompt:
jbi_22 -aprogram -ddo_real_time_isp=1 <file_name.jbc>
The names of the executable files for the players are different, depending on the
version of the players. Download the latest version of the Jam and JBC Player from the
Altera
®
web site at
ISP Clamp
When a MAX II device enters normal ISP operation, all the I/O pins tri-state and are
weakly pulled up to V
CCIO
with internal pull-up resistors. However, there are
situations when the I/O pins of the device should not be tri-stated when the device is
in ISP operation. For instance, in a running system, some signals (e.g., output enable
or chip enable signals) might use some of the I/O pins and require those I/O pins to
assume a high or low logic level, or even maintain their current state when the device
is in ISP mode.
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