ep2c35 Altera Corporation, ep2c35 Datasheet - Page 77

• Manufacturer Part Number: ep2c35
• Description: Cyclone Ii Device Family Data Sheet
• Manufacturer: Altera Corporation

Altera Corporation
February 2007
Note to
(1)
CONFIG_IO
SignalTap II
instructions
Table 3–1. Cyclone II JTAG Instructions (Part 2 of 2)
JTAG Instruction
Bus hold and weak pull-up resistor features override the high-impedance state of HIGHZ, CLAMP, and EXTEST.
Table
3–1:
00 0000 1101
Instruction Code
The Quartus II software has an Auto Usercode feature where you can
choose to use the checksum value of a programming file as the JTAG user
code. If selected, the checksum is automatically loaded to the USERCODE
register. In the Settings dialog box in the Assignments menu, click Device
& Pin Options, then General, and then turn on the Auto Usercode
option.
Allows configuration of I/O standards through the JTAG chain for
JTAG testing. Can be executed before, after, or during
configuration. Stops configuration if executed during configuration.
Once issued, the
reset the configuration device.
device is reconfigured.
Monitors internal device operation with the SignalTap II embedded
logic analyzer.
CONFIG_IO
Cyclone II Device Handbook, Volume 1
Description
nSTATUS
instruction holds
Configuration & Testing
is held low until the
nSTATUS
low to
3–3