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TMS320DM643 датащи(PDF) 95 Page - Texas Instruments |
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TMS320DM643 датащи(HTML) 95 Page - Texas Instruments |
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95 / 162 page ![]() www.ti.com AECLKOUTx ACEx ABE[7:0] AEA[12:3] AED[63:0] AEA13 AAOE/ASDRAS/ASOE(A) AARE/ASDCAS/ASADS/ASRE(A) AAWE/ASDWE/ASWE(A) AEA[22:14] BE1 BE2 BE3 BE4 Bank Column D1 D2 D3 D4 8 7 6 5 5 5 1 3 2 8 4 4 4 1 READ APDT(B) 14 14 A. AARE/ASDCAS/ASADS/ASRE, AAWE/ASDWE/ASWE, and AAOE/ASDRAS/ASOE operate as ASDCAS, ASDWE, and ASDRAS, respectively, during SDRAM accesses. B. APDT signal is only asserted when the EDMA is in PDT mode (set the PDTS bit to 1 in the EDMA options parameter RAM). For APDT read, data is not latched into EMIF. The PDTRL field in the PDT control register (PDTCTL) configures the latency of the APDT signal with respect to the data phase of a read transaction. The latency of the APDT signal for a read can be programmed to 0, 1, 2, or 3 by setting PDTRL to 00, 01, 10, or 11, respectively. PDTRL equals 00 (zero latency) in this figure. TMS320DM643 Video/Imaging Fixed-Point Digital Signal Processor SPRS269C – FEBRUARY 2005 – REVISED JANUARY 2007 Figure 5-24. SDRAM Read Command (CAS Latency 3) for EMIFA Submit Documentation Feedback DM643 Peripheral Information and Electrical Specifications 95 |
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