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AD7274 датащи(PDF) 24 Page - Analog Devices |
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AD7274 датащи(HTML) 24 Page - Analog Devices |
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24 / 28 page ![]() AD7273/AD7274 Rev. 0 | Page 23 of 28 MICROPROCESSOR INTERFACING AD7273/AD7274 to ADSP-BF53x The ADSP-BF53x family of DSPs interfaces directly to the AD7273/AD7274 without requiring glue logic. The SPORT0 Receive Configuration 1 register should be set up as outlined in Table 8. AD7273/ AD72741 ADSP-BF53x1 SCLK RCLK0 SPORT0 DR0PRI RFS0 DT0 DOUT CS DIN 1ADDITIONAL PINS OMITTED FOR CLARITY Figure 39. Interfacing to the ADSP-BF53x Table 8. The SPORT0 Receive Configuration 1 Register (SPORT0_RCR1) Setting Description RCKFE = 1 Sample data with falling edge of RSCLK LRFS = 1 Active low frame signal RFSR = 1 Frame every word IRFS = 1 Internal RFS used RLSBIT = 0 Receive MSB first RDTYPE = 00 Zero fill IRCLK = 1 Internal receive clock RSPEN = 1 Receive enabled SLEN = 1111 16-bit data-word (or can be set to 1101 for a 14-bit data-word) TFSR = RFSR = 1 To implement the power-down modes, set SLEN to 1001 to issue an 8-bit SCLK burst. |
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