ep2c35 Altera Corporation, ep2c35 Datasheet - Page 76

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

IEEE Std. 1149.1 (JTAG) Boundary Scan Support
3–2
Cyclone II Device Handbook, Volume 1
SAMPLE/PRELOAD
EXTEST
BYPASS
USERCODE
IDCODE
HIGHZ
CLAMP
ICR
instructions
PULSE_NCONFIG
Table 3–1. Cyclone II JTAG Instructions (Part 1 of 2)
JTAG Instruction
(1)
(1)
(1)
00 0000 0101
00 0000 1111
11 1111 1111
00 0000 0111
00 0000 0110
00 0000 1011
00 0000 1010
00 0000 0001
Instruction Code
Cyclone II devices also use the JTAG port to monitor the logic operation
of the device with the SignalTap
devices support the JTAG instructions shown in
Allows a snapshot of signals at the device pins to be captured and
examined during normal device operation, and permits an initial
data pattern to be output at the device pins. Also used by the
SignalTap II embedded logic analyzer.
Allows the external circuitry and board-level interconnects to be
tested by forcing a test pattern at the output pins and capturing test
results at the input pins.
Places the 1-bit bypass register between the
which allows the BST data to pass synchronously through selected
devices to adjacent devices during normal device operation.
Selects the 32-bit
TDI
out of
Selects the
allowing the
Places the 1-bit bypass register between the
which allows the BST data to pass synchronously through selected
devices to adjacent devices during normal device operation, while
tri-stating all of the I/O pins.
Places the 1-bit bypass register between the
which allows the BST data to pass synchronously through selected
devices to adjacent devices during normal device operation while
holding I/O pins to a state defined by the data in the boundary-scan
register.
Used when configuring a Cyclone II device via the JTAG port with
a USB Blaster
ByteBlasterMV
File via an embedded processor.
Emulates pulsing the
even though the physical pin is unaffected.
and
TDO
TDO
.
IDCODE
IDCODE
pins, allowing the
™
™
, ByteBlaster
download cable, or when using a Jam File or JBC
USERCODE
®
register and places it between
nCONFIG
to be serially shifted out of
II embedded logic analyzer. Cyclone II
Description
™
register and places it between the
II, MasterBlaster
USERCODE
pin low to trigger reconfiguration
Table
to be serially shifted
TDI
TDI
TDI
3–1.
Altera Corporation
™
TDO
or
and
and
and
February 2007
TDI
.
TDO
TDO
TDO
and
pins,
pins,
pins,
TDO
,