Sdram Deactivation; Sdram Dcab - Deactivate All Banks - Texas Instruments TMS320C6201 Reference Manual

Tms320c6000 series peripherals

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SDRAM Deactivation

Figure 9–22. SDRAM DCAB — Deactivate all Banks

† Clock=SDCLK for 'C6201/C6701.

Clock=CLKOUT2 for 'C6202.

Clock=ECLKOUT for 'C6211/C6711.

The SDRAM deactivation (DCAB) is performed after a hardware reset or when

INIT = 1 in the EMIF SDRAM control register. This cycle is also required by the

SDRAMs prior to REFR and MRS. On the 'C6201/C6202/C6701, a DCAB is

issued when a page boundary is crossed. During the DCAB command, SDA10

is driven high to ensure that all SDRAM banks are deactivated. Figure 9–22

shows the timing diagram for SDRAM deactivation.

External Memory Interface

SDRAM Interface

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