 |
Electronic Components Datasheet Search |
|
|
Electronic Components Datasheet Search |
|
EP1AGX Datasheet(PDF) 68 Page - Altera Corporation |
|
||||||||||||||||||||||||||||||
EP1AGX Datasheet(HTML) 68 Page - Altera Corporation |
|
|
68 / 234 page  2–62 Chapter 2: Arria GX Architecture Digital Signal Processing Block Arria GX Device Handbook, Volume 1 © December 2009 Altera Corporation Modes of Operation The adder, subtractor, and accumulate functions of a DSP block have four modes of operation: ■ Simple multiplier ■ Multiply-accumulator ■ Two-multipliers adder ■ Four-multipliers adder Table 2–14 shows the different number of multipliers possible in each DSP block mode according to size. These modes allow the DSP blocks to implement numerous applications for DSP including FFTs, complex FIR, FIR, 2D FIR filters, equalizers, IIR, correlators, matrix multiplication, and many other functions. DSP blocks also support mixed modes and mixed multiplier sizes in the same block. For example, half of one DSP block can implement one 18 × 18-bit multiplier in multiply-accumulator mode, while the other half of the DSP block implements four 9 × 9-bit multipliers in simple multiplier mode. DSP Block Interface The Arria GX device DSP block input registers can generate a shift register that can cascade down in the same DSP block column. Dedicated connections between DSP blocks provide fast connections between shift register inputs to cascade shift register chains. You can cascade registers within multiple DSP blocks for 9 × 9- or 18 × 18-bit FIR filters larger than four taps, with additional adder stages implemented in ALMs. If the DSP block is configured as 36 × 36 bits, the adder, subtractor, or accumulator stages are implemented in ALMs. Each DSP block can route the shift register chain out of the block to cascade multiple columns of DSP blocks. The DSP block is divided into four block units that interface with four LAB rows on the left and right. Each block unit can be considered one complete 18 × 18-bit multiplier with 36 inputs and 36 outputs. A local interconnect region is associated with each DSP block. Like an LAB, this interconnect region can be fed with 16 direct link interconnects from the LAB to the left or right of the DSP block in the same row. R4 and C4 routing resources can access the DSP block’s local interconnect region. The outputs also work similarly to LAB outputs. Eighteen outputs from the DSP block can drive to the left LAB through direct link interconnects and 18 can drive to the right LAB though direct link interconnects. All 36 outputs can drive to R4 and C4 routing interconnects. Outputs can drive right- or left-column routing. Table 2–14. Multiplier Size and Configurations per DSP Block DSP Block Mode 9 × 9 18 × 18 36 × 36 Multiplier Eight multipliers with eight product outputs Four multipliers with four product outputs One multiplier with one product output Multiply-accumulator — Two 52-bit multiply-accumulate blocks — Two-multipliers adder Four two-multiplier adder (two 9 × 9 complex multiply) Two two-multiplier adder (one 18 × 18 complex multiply) — Four-multipliers adder Two four-multiplier adder One four-multiplier adder — |
Similar Part No. - EP1AGX |
|
Similar Description - EP1AGX |
|
|
Link URL |
| Privacy Policy |
| ALLDATASHEET.COM |
| Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Datasheet Upload | Contact us | Privacy Policy | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
| Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
|
Family Site : ic2ic.com |
icmetro.com |
English ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
