Datasheet

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AM3359, AM3358, AM3357
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www.ti.com SPRS717E –OCTOBER 2011–REVISED JANUARY 2013
– H = (1 + 0.5 * OEExtraDelay) * GPMC_FCLK
(14)
otherwise
– Case GpmcFCLKDivider = 2:
– H = 0.5 * OEExtraDelay * GPMC_FCLK
(14)
if ((OEOffTime – ClkActivationTime) is a multiple of 3)
– H = (1 + 0.5 * OEExtraDelay) * GPMC_FCLK
(14)
if ((OEOffTime – ClkActivationTime – 1) is a multiple of 3)
– H = (2 + 0.5 * OEExtraDelay) * GPMC_FCLK
(14)
if ((OEOffTime – ClkActivationTime – 2) is a multiple of 3)
(9) For WE falling edge (WE activated):
– Case GpmcFCLKDivider = 0:
– I = 0.5 * WEExtraDelay * GPMC_FCLK
(14)
– Case GpmcFCLKDivider = 1:
– I = 0.5 * WEExtraDelay * GPMC_FCLK
(14)
if (ClkActivationTime and WEOnTime are odd) or (ClkActivationTime and WEOnTime
are even)
– I = (1 + 0.5 * WEExtraDelay) * GPMC_FCLK
(14)
otherwise
– Case GpmcFCLKDivider = 2:
– I = 0.5 * WEExtraDelay * GPMC_FCLK
(14)
if ((WEOnTime – ClkActivationTime) is a multiple of 3)
– I = (1 + 0.5 * WEExtraDelay) * GPMC_FCLK
(14)
if ((WEOnTime – ClkActivationTime – 1) is a multiple of 3)
– I = (2 + 0.5 * WEExtraDelay) * GPMC_FCLK
(14)
if ((WEOnTime – ClkActivationTime – 2) is a multiple of 3)
For WE rising edge (WE deactivated):
– Case GpmcFCLKDivider = 0:
– I = 0.5 * WEExtraDelay * GPMC_FCLK
(14)
– Case GpmcFCLKDivider = 1:
– I = 0.5 * WEExtraDelay * GPMC_FCLK
(14)
if (ClkActivationTime and WEOffTime are odd) or (ClkActivationTime and WEOffTime
are even)
– I = (1 + 0.5 * WEExtraDelay) * GPMC_FCLK
(14)
otherwise
– Case GpmcFCLKDivider = 2:
– I = 0.5 * WEExtraDelay * GPMC_FCLK
(14)
if ((WEOffTime – ClkActivationTime) is a multiple of 3)
– I = (1 + 0.5 * WEExtraDelay) * GPMC_FCLK
(14)
if ((WEOffTime – ClkActivationTime – 1) is a multiple of 3)
– I = (2 + 0.5 * WEExtraDelay) * GPMC_FCLK
(14)
if ((WEOffTime – ClkActivationTime – 2) is a multiple of 3)
(10) J = GPMC_FCLK
(14)
(11) In gpmc_csn[x], x is equal to 0, 1, 2, 3, 4 or 5. In gpmc_wait[x], x is equal to 0 or 1.
(12) P = gpmc_clk period in ns
(13) For read: K = (ADVRdOffTime – ADVOnTime) * (TimeParaGranularity + 1) * GPMC_FCLK
(14)
For write: K = (ADVWrOffTime – ADVOnTime) * (TimeParaGranularity + 1) * GPMC_FCLK
(14)
(14) GPMC_FCLK is general-purpose memory controller internal functional clock period in ns.
(15) Related to the gpmc_clk output clock maximum and minimum frequencies programmable in the GPMC module by setting the
GPMC_CONFIG1_CSx configuration register bit field GpmcFCLKDivider.
(16) The jitter probability density can be approximated by a Gaussian function.
Copyright © 2011–2013, Texas Instruments Incorporated Peripheral Information and Timings 125
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