2012年8月29日 星期三
How to select suitable crystals and external components
In http://www.st.com/internet/com/TECHNICAL_RESOURCES/TECHNICAL_LITERATURE/APPLICATION_NOTE/CD00221665.pdf
2012年8月3日 星期五
How to determine using which flash device to store the configuration data for configuring Altera FPGA
In http://www.altera.com/literature/hb/cfg/cyc_c51014.pdf
Table 1 lists the supported Altera EPCS devices.
Example 1. Compression Ratio Calculation
EP4SGX530 = 189,000,000 bits
EPCS128 = 134,217,728 bits
Preliminary data indicates that compression typically reduces the configuration bitstream size by 35% to 55%. Assume worst case that is 35% decompression.
189,000,000 bits x 0.65 = 122,850,000 bits
The EPCS128 device is suitable.
For example: Cyclone V E FPGA Device 5CEA7
In http://www.altera.com/literature/hb/cyclone-v/cv_51002.pdf
Table 43 lists the uncompressed raw binary file (.rbf) sizes for Cyclone V devices.
Table 1 lists the supported Altera EPCS devices.
Example 1. Compression Ratio Calculation
EP4SGX530 = 189,000,000 bits
EPCS128 = 134,217,728 bits
Preliminary data indicates that compression typically reduces the configuration bitstream size by 35% to 55%. Assume worst case that is 35% decompression.
189,000,000 bits x 0.65 = 122,850,000 bits
The EPCS128 device is suitable.
For example: Cyclone V E FPGA Device 5CEA7
In http://www.altera.com/literature/hb/cyclone-v/cv_51002.pdf
Table 43 lists the uncompressed raw binary file (.rbf) sizes for Cyclone V devices.
The EPCS64 device is suitable for the
Cyclone V E FPGA Device 5CEA7 .
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