Load DAC by SPI protocol -- Unit provides serial load of DAC trough SPI 3-wire serial interface -- It sends 24-bit word, format of the word: -- 4-bit command: C3-C0, 4x don t care bits, 12-bit data: d11-d0, 4x don t care bits -- -- Serial interface outputs: -- SDI - Serial Interface Data sent to DAC -- SCK - Serial Interface Clock -- CSLD - Serial Interface Chip Select/Load -- -- DAC word length = 24 bit: -- -------------------------- -- MSB -- 4 bits - DAC command -- 4 bits - don t care values -- 12 bits - "gain" word -- 4 bits - don t care values -- LSB -- -------------------------- -- -- Dependencies: -- -- This unit needs the following files: -- 1) counter.vhd -- 2) SEQUENCE.vhd -- 3) rising.vhd -- 4) falling.vhd -- 5) Dline1.vhd -- 4) useful.vhd -- -- Revision: -- Revision 0.01 - File Created -- Additional Comments:

counter.vhd
DacLoad.vhd
dline1.vhd
falling.vhd
rising.vhd
SEQUENCE.vhd

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