HC230 ALTERA [Altera Corporation], HC230 Datasheet - Page 223

• Manufacturer Part Number: HC230
• Description: HardCopy II Device Family
• Manufacturer: ALTERA [Altera Corporation]

JTAG BST and
Extended
Functions
Altera Corporation
September 2008
Figure 8–9
left and a HardCopy II DSP implementation on the right, both configured
with an 18 × 18 multiply with accumulate function. In the HardCopy II
implementation, the Quartus II software selected the appropriate DSP
logic implementation from the macro library which results in an optimal
utilization of the HardCopy II device’s HCells. The unused sections of the
Stratix II DSP block remain powered up, but these are not implemented
in the HardCopy II device. Unused logic in HardCopy II devices are
powered down.
Figure 8–9. HardCopy II Floorplan of 18 × 18 DSP Block
HardCopy II devices support the same boundary-scan test (BST)
functionality as the Stratix II devices. However, since HardCopy II
devices are mask-programmed, no reconfiguration is possible. Therefore,
HardCopy II devices do not support instructions to reconfigure the
device through the JTAG pins. For a list of supported features and
instruction codes, refer to the Boundary-Scan Support chapter of the
HardCopy Series Handbook.
One Stratix II feature utilizing JTAG pins is the Signal Tap II embedded
logic analyzer (ELA). HardCopy II devices support the JTAG ELA
feature. However, designing with this feature will use additional
resources and may reduce peak performance in Stratix II and
shows Quartus II floor plans of a Stratix II DSP block on the
JTAG BST and Extended Functions
Preliminary
8–35