HC230F1020 Altera, HC230F1020 Datasheet - Page 221

• Manufacturer Part Number: HC230F1020
• Manufacturer: Altera

Specifications of HC230F1020

• Lead Free Status / RoHS Status: Not Compliant

HardCopy II DSP
Implementation
from Stratix II
DSP Blocks
Altera Corporation
September 2008
EP2S30
EP2S60
EP2S90
(1)
EP2S130
(1)
Stratix II
Table 8–20. DSP Multiplier Availability for Stratix II and HardCopy II Companion Devices (Part 1 of 2)
Device
9 × 9 18 × 18 36 × 36 9 × 9 18 × 18 36 × 36 9 × 9 18 × 18 36 × 36 9 × 9 18 × 18 36 × 36
288
128
384
HC210
144
192
64
Stratix II FPGAs have dedicated DSP blocks to implement various DSP
functions. Stratix II DSP blocks consist of multipliers, an
adder/subtractor/accumulator and a summation block, input and
output interfaces, and input and output registers. The Quartus II software
implements DSP functions in HardCopy II devices with HCells using
predetermined logic implementations from its library of HCell macros, all
of which have predetermined timing.
DSP blocks that are not used in the Stratix II design are not implemented
in Hardcopy II devices. This preserves the HardCopy II logic for other
implementations, saving resources and power. Furthermore, the
HardCopy II DSP block placement can be optimized to meet the timing
constraint requirements placed on the HardCopy II designs.
The HardCopy II DSP implementation is functionally equivalent to
Stratix II DSP blocks and all features are supported except for
dynamic-mode switching. You can set up Stratix II DSP blocks to
dynamically switch between the following three modes:
■
■
■
HardCopy II DSP implementation does not support dynamic switching.
If this feature is used, the Quartus II software flags the DSP
implementation and does not allow you to migrate the design. The fitter
reports that all HardCopy II devices are not compatible with the design.
To migrate your Stratix II design to a HardCopy II companion device,
disable dynamic switching in the DSP blocks.
The total number of DSP blocks is dependent on the Stratix II device
selected. HardCopy II devices will match the available DSP block
resources in the Stratix II device.
implementations based on the selected Stratix II device.
16
36
48
Up to four 18-bit independent multipliers
Up to two 18-bit multiplier-accumulators
One 36-bit multiplier
288
384
504
HC220
144
192
252
HardCopy II DSP Implementation from Stratix II DSP Blocks
36
48
63
384
504
Table 8–20
HC230
192
252
lists available DSP
48
63
HC240
Preliminary
8–33