MAX 7000 Programmable Logic Device Family Data Sheet
MAX 7000 devices support JTAG BST circuitry as specified by IEEE Std.
1149.1-1990. Table 6 describes the JTAG instructions supported by the
MAX 7000 family. The pin-out tables (see the Altera web site
(http://www.altera.com) or the Altera Digital Library for pin-out
information) show the location of the JTAG control pins for each device.
If the JTAG interface is not required, the JTAG pins are available as user
I/ O pins.
IEEE Std.
1149.1 (JTAG)
Boundary-Scan
Support
Table 6. MAX 7000 JTAG Instructions
JTAG Instruction
Devices
Description
SAMPLE/PRELOAD
EPM7128S
EPM7160S
EPM7192S
EPM7256S
Allows a snapshot of signals at the device pins to be captured and
examined during normal device operation, and permits an initial data
pattern output at the device pins.
EXTEST
BYPASS
EPM7128S
EPM7160S
EPM7192S
EPM7256S
Allows the external circuitry and board-level interconnections to be
tested by forcing a test pattern at the output pins and capturing test
results at the input pins.
EPM7032S
EPM7064S
EPM7128S
EPM7160S
EPM7192S
EPM7256S
Places the 1-bit bypass register between the TDIand TDOpins, which
allows the BST data to pass synchronously through a selected device
to adjacent devices during normal device operation.
IDCODE
EPM7032S
EPM7064S
EPM7128S
EPM7160S
EPM7192S
EPM7256S
Selects the IDCODE register and places it between TDIand TDO,
allowing the IDCODE to be serially shifted out of TDO.
ISP Instructions
EPM7032S
EPM7064S
EPM7128S
EPM7160S
EPM7192S
EPM7256S
These instructions are used when programming MAX 7000S devices
via the JTAG ports with the MasterBlaster, ByteBlasterMV, BitBlaster
download cable, or using a Jam File (.jam), Jam Byte-Code file (.jbc),
or Serial Vector Format file (.svf) via an embedded processor or test
equipment.
Altera Corporation
19
ALTERA [ ALTERA CORPORATION ]
