HC4GX15 Datasheet, PDF (230/668 Pages) Altera Corporation – HardCopy IV Device Handbook

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Chapter 3: Mapping Stratix IV Device Resources to HardCopy IV Devices
Using JTAG Features in HardCopy IV Devices
Using JTAG Features in HardCopy IV Devices
HardCopy IV ASICs support the same boundary-scan test (BST) functionality as
Stratix IV FPGAs. However, no reconfiguration is possible because HardCopy IV
devices are mask-programmed. Therefore, HardCopy IV devices do not support
instructions to reconfigure the device through the JTAG pins. HardCopy IV boundary
scan lengths also differ from Stratix IV devices.
f For information about HardCopy IV JTAG functionality and support, refer to the IEEE
1149.1 JTAG Boundary Scan Testing in HardCopy IV Devices chapter.
Power-Up and Configuration Pin Compatibility with Stratix IV Devices
When designing a board for both HardCopy IV and Stratix IV devices, most
configuration pins required by the Stratix IV device are not required by the
HardCopy IV device. The functions of these Stratix IV configuration pins are not
carried over to the HardCopy IV companion device because HardCopy IV devices are
not programmable. To simplify the board connection for these configuration pins,
Altera recommends minimizing the power-up and configuration pins that do not
carry over from a Stratix IV device to a HardCopy IV device. You should ensure that
the board can be used for both Stratix IV and HardCopy IV devices. Configuration
pins for both devices must be properly connected. Otherwise, separate boards are
required for the two devices.
Table 3–18 lists the main and optional functions on the configuration pins used by
Stratix IV and HardCopy IV devices.
Table 3–18. Mapping Configuration Pins into HardCopy IV Devices (Part 1 of 2) (Note 1), (2), (3), (4)
Stratix IV FPGA Prototype
Main Function Optional Function
HardCopy IV ASIC
Main Function Optional Function
Board Connection
MSEL[2..0]
nCONFIG (5)
I/O pin
I/O pin
DCLK
I/O pin
—
—
DATA0
DATA [7..1]
—
INIT_DONE (6)
—
nCONFIG
I/O pin
I/O pin
DCLK
I/O pin
I/O pin
nSTATUS (5)
CONF_DONE (5)
nCE
nCEO
PORSEL
I/O pin
CLKUSR
—
—
—
—
—
ASDO
I/O pin
nSTATUS
CONF_DONE
nCE
nCEO
PORSEL
I/O pin
—
—
DATA0
—
—
INIT_DONE
—
—
—
—
—
—
ASDO
Not required and no connection on board.
Required connection.
DATA[0] retains both user I/O and optional
EPCS access functions. DATA [7..1]
retains user I/O functions only.
No Connection on Board, except when EPCS
access is required in user mode.
Retains the same I/O functions from
Stratix IV.
Retains the same I/O functions from
Stratix IV except CLKUSR, because no
device programming is required.
Required connection.
Required connection.
Required connection.
Not required and no connection on board.
Required connection.
No connection on board, except when EPCS
access is required in user mode.
HardCopy IV Device Handbook, Volume 2
© January 2010 Altera Corporation