DK-DEV-4SGX230N Altera, DK-DEV-4SGX230N Datasheet - Page 115

• Manufacturer Part Number: DK-DEV-4SGX230N
• Description: KIT DEVELOPMENT STRATIX IV
• Manufacturer: Altera
• Series: Stratix® IVr
• Type: FPGAr

Specifications of DK-DEV-4SGX230N

• Contents: Development Board, Universal Power Supply, Cables and Software
• Silicon Manufacturer: Altera
• Core Architecture: FPGA
• Core Sub-architecture: Stratix
• Silicon Core Number: EP4S
• Silicon Family Name: Stratix IV GX
• Rohs Compliant: Yes
• For Use With/related Products: EP4SGX230K
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 544-2594

Chapter 4: DSP Blocks in Stratix IV Devices
Software Support
Table 4–9. DSP Block Dynamic Signals (Part 2 of 2)
Software Support
February 2011 Altera Corporation
accum_sload
zero_chainout
zero_loopback
rotate
shift_right
Total Signals per Half Block
clock0
clock1
clock2
clock3
ena0
ena1
ena2
ena3
aclr0
aclr1
aclr2
aclr3
Total Count per Full Block
Signal Name
f
Altera provides two distinct methods for implementing various modes of the DSP
block in a design—instantiation and inference. Both methods use the following
Quartus II megafunctions:
■
■
■
■
To use the DSP block, instantiate the megafunctions in the Quartus II software.
Alternatively, with inference, create an HDL design and synthesize it using a
third-party synthesis tool (such as LeonardoSpectrum™, Synplify, or Quartus II
Native Synthesis) that infers the appropriate megafunction by recognizing
multipliers, multiplier adders, multiplier accumulators, and shift functions. Using
either method, the Quartus II software maps the functionality to the DSP blocks
during compilation.
For instructions about using these megafunctions and the MegaWizard Plug-In
Manager, refer to Quartus II software Help.
lpm_mult
altmult_add
altmult_accum
altfp_mult
Dynamically specifies whether the accumulator value is zero.
■
■
Dynamically specifies whether the chainout value is zero.
Dynamically specifies whether the loopback value is zero.
rotate = 1, the rotation feature is enabled
shift_right = 1, the shift right feature is enabled
DSP-block-wide clock signals.
Input and Pipeline Register enable signals.
DSP block-wide asynchronous clear signals (active low).
accum_sload = 0, accumulation input is from the output registers
accum_sload = 1, accumulation input is set to zero
Function
Stratix IV Device Handbook Volume 1
Count
11
34
1
1
1
1
1
4
4
4
4–35