AM3892 datasheet(210/299 Pages) TI

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AM3894

AM3892

SPRS681A – OCTOBER 2010 – REVISED MARCH 2011

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Table 8-55. Switching Characteristics Over Recommended Operating Conditions for GPMC/NOR Flash

Interface - Synchronous Mode (continued)

(see Figure 8-51, Figure 8-52, Figure 8-53, Figure 8-54, Figure 8-55, Figure 8-56)

NO.

PARAMETER

MIN

MAX

UNIT

td(CLKH-nADV)

Delay time, GPMC_CLK rising edge to GPMC_ADV_ALE transition

G - 2.3(7)

G + 4.5(7)

td(CLKH-nADVIV)

Delay time, GPMC_CLK rising edge to GPMC_ADV_ALE invalid

D - 2.3(6)

D + 4.5(6)

td(CLKH-nOE)

Delay time, GPMC_CLK rising edge to GPMC_OE_RE transition

H - 2.3(8)

H + 3.5(8)

td(CLKH-nOEIV)

Delay time, GPMC_CLK rising edge to GPMC_OE_RE invalid

E - 2.3(4)

E + 3.5(4)

(7)

For ADV falling edge (ADV activated):

•

Case GpmcFCLKDivider = 0:

G = 0.5 * ADVExtraDelay * GPMC_FCLK

•

Case GpmcFCLKDivider = 1:

G = 0.5 * ADVExtraDelay * GPMC_FCLK if (ClkActivationTime and ADVOnTime are odd) or (ClkActivationTime and ADVOnTime are

even)

G = (1 + 0.5 * ADVExtraDelay) * GPMC_FCLK otherwise

•

Case GpmcFCLKDivider = 2:

G = 0.5 * ADVExtraDelay * GPMC_FCLK if ((ADVOnTime - ClkActivationTime) is a multiple of 3)

G = (1 + 0.5 * ADVExtraDelay) * GPMC_FCLK if ((ADVOnTime - ClkActivationTime - 1) is a multiple of 3)

G = (2 + 0.5 * ADVExtraDelay) * GPMC_FCLK if ((ADVOnTime - ClkActivationTime - 2) is a multiple of 3)

For ADV rising edge (ADV deactivated) in Reading mode:

•

Case GpmcFCLKDivider = 0:

G = 0.5 * ADVExtraDelay * GPMC_FCLK

•

Case GpmcFCLKDivider = 1:

G = 0.5 * ADVExtraDelay * GPMC_FCLK if (ClkActivationTime and ADVRdOffTime are odd) or (ClkActivationTime and

ADVRdOffTime are even)

G = (1 + 0.5 * ADVExtraDelay) * GPMC_FCLK otherwise

•

Case GpmcFCLKDivider = 2:

G = 0.5 * ADVExtraDelay * GPMC_FCLK if ((ADVRdOffTime - ClkActivationTime) is a multiple of 3)

G = (1 + 0.5 * ADVExtraDelay) * GPMC_FCLK if ((ADVRdOffTime - ClkActivationTime - 1) is a multiple of 3)

G = (2 + 0.5 * ADVExtraDelay) * GPMC_FCLK if ((ADVRdOffTime - ClkActivationTime - 2) is a multiple of 3)

For ADV rising edge (ADV deactivated) in Writing mode:

•

Case GpmcFCLKDivider = 0:

G = 0.5 * ADVExtraDelay * GPMC_FCLK

•

Case GpmcFCLKDivider = 1:

G = 0.5 * ADVExtraDelay * GPMC_FCLK if (ClkActivationTime and ADVWrOffTime are odd) or (ClkActivationTime and

ADVWrOffTime are even)

G = (1 + 0.5 * ADVExtraDelay) * GPMC_FCLK otherwise

•

Case GpmcFCLKDivider = 2:

G = 0.5 * ADVExtraDelay * GPMC_FCLK if ((ADVWrOffTime - ClkActivationTime) is a multiple of 3)

G = (1 + 0.5 * ADVExtraDelay) * GPMC_FCLK if ((ADVWrOffTime - ClkActivationTime - 1) is a multiple of 3)

G = (2 + 0.5 * ADVExtraDelay) * GPMC_FCLK if ((ADVWrOffTime - ClkActivationTime - 2) is a multiple of 3)

(8)

For OE falling edge (OE activated) / IO DIR rising edge (IN direction) :

•

Case GpmcFCLKDivider = 0:

H = 0.5 * OEExtraDelay * GPMC_FCLK

•

Case GpmcFCLKDivider = 1:

H = 0.5 * OEExtraDelay * GPMC_FCLK if (ClkActivationTime and OEOnTime are odd) or (ClkActivationTime and OEOnTime are

even)

H = (1 + 0.5 * OEExtraDelay) * GPMC_FCLK otherwise

•

Case GpmcFCLKDivider = 2:

H = 0.5 * OEExtraDelay * GPMC_FCLK if ((OEOnTime - ClkActivationTime) is a multiple of 3)

H = (1 + 0.5 * OEExtraDelay) * GPMC_FCLK if ((OEOnTime - ClkActivationTime - 1) is a multiple of 3)

H = (2 + 0.5 * OEExtraDelay) * GPMC_FCLK if ((OEOnTime - ClkActivationTime - 2) is a multiple of 3)

For OE rising edge (OE deactivated):

•

Case GpmcFCLKDivider = 0:

H = 0.5 * OEExtraDelay * GPMC_FCLK

•

Case GpmcFCLKDivider = 1:

H = 0.5 * OEExtraDelay * GPMC_FCLK if (ClkActivationTime and OEOffTime are odd) or (ClkActivationTime and OEOffTime are

even)

H = (1 + 0.5 * OEExtraDelay) * GPMC_FCLK otherwise

•

Case GpmcFCLKDivider = 2:

H = 0.5 * OEExtraDelay * GPMC_FCLK if ((OEOffTime - ClkActivationTime) is a multiple of 3)

H = (1 + 0.5 * OEExtraDelay) * GPMC_FCLK if ((OEOffTime - ClkActivationTime - 1) is a multiple of 3)

H = (2 + 0.5 * OEExtraDelay) * GPMC_FCLK if ((OEOffTime - ClkActivationTime - 2) is a multiple of 3)

210

Peripheral Information and Timings

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