CAST CPXP-EP Core — ASIC Implementation Results

The following sample results were obtained at the required frequency of 125 MHz, and with a single Virtual Channel (VC0), Maximum Payload of 256B, a 4kB Retry buffer, a 4kB Receive buffer, no ECRC, and using a generic Application Interface.

Link Width Technology Approx. Area
x1 TSMC 0.13 µm 45,300 gates
x1 TSMC 0.18µm 45,100 gates
x1 TSMC 90 nm 41,000 gates
x4 TSMC 0.13 µm 59,300 gates
x4 TSMC 0.18 µm 58,700 gates
x4 TSMC 90 nm 53,800 gates

The core includes an Application Interface (AIF) extension, an additional subsystem for that may be used to integrate the core with SoC designs using custom or various standard interfaces. The sample implementation results shown below show the additional gates needed for a Wishbone AIF with two and eight DMA channels.

DMA Channels Technology Approx. Area
2 TSMC 0.13 µm 24,400 gates
2 TSMC 0.18µm 23,800 gates
2 TSMC 90 nm 21,900 gates
8 TSMC 0.13 µm 53,000 gates
8 TSMC 0.18 µm 52,400 gates
8 TSMC 90 nm 47,000 gates

close window