Visible to Intel only — GUID: sam1403476562249
Ixiasoft
Visible to Intel only — GUID: sam1403476562249
Ixiasoft
3.5.2. Pre-Adder
Arria V GX, GT, SX, and ST Devices
Each variable precision DSP block has two 19-bit pre-adders. You can configure these pre-adders in the following configurations:
- Two independent 19-bit pre-adders
- One 27-bit pre-adder
The pre-adder supports both addition and subtraction in the following input configurations:
- 18-bit (signed) addition or subtraction for 18 x 19 mode
- 17-bit (unsigned) addition or subtraction for 18 x 19 mode
- 26-bit addition or subtraction for 27 x 27 mode
Arria V GZ Devices
Each variable precision DSP block has two 18-bit pre-adders. You can configure these pre-adders in the following configurations:
- Two independent 18-bit adders
- One 26-bit adder
The pre-adder supports both addition and subtraction in the following input configurations:
- 17-bit addition or subtraction for 18-bit applications
- 25-bit addition or subtraction for 27-bit applications
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