AM2434...ALV datasheet(167/280 Pages) TI

167 / 280 page

Table 7-53. GPMC and NOR Flash Switching Characteristics – Synchronous Mode (continued)

see Figure 7-39, Figure 7-40, Figure 7-41, Figure 7-42, and Figure 7-43

NO.

(3)

PARAMETER

DESCRIPTION

MODE

(17)

MIN

MAX

MIN

MAX

UNIT

100 MHz

133 MHz

F17 td(clkL-be[x]n).

Delay time, GPMC_CLK falling edge

to GPMC_BE0n_CLE, GPMC_BE1n

transition

(13)

div_by_1_mode;

GPMC_FCLK_MUX;

TIMEPARAGRANULARITY_X1

J - 2.3

(10)

J + 1.9

J - 2.3

(10)

J + 1.9

F18 tw(csnV)

Pulse duration, output chip select

GPMC_CSn[i]

(14) low

Read

Write

F19 tw(be[x]nV)

Pulse duration, output lower byte

enable and command latch enable

GPMC_BE0n_CLE, output upper byte

enable GPMC_BE1n low

Read

Write

F20 tw(advnV)

Pulse duration, output address

valid and address latch enable

GPMC_ADVn_ALE low

Read

Write

(1)

Synchronous Mode supports 16-bit data bus up to 133 MHz and 32-bit data bus up to 100 MHz

(2)

For single read: A = (CSRdOffTime - CSOnTime) × (TimeParaGranularity + 1) × GPMC_FCLK(15)

For burst read: A = (CSRdOffTime - CSOnTime + (n - 1) × PageBurstAccessTime) × (TimeParaGranularity + 1) × GPMC_FCLK(15)

For burst write: A = (CSWrOffTime - CSOnTime + (n - 1) × PageBurstAccessTime) × (TimeParaGranularity + 1) × GPMC_FCLK(15)

With n being the page burst access number.

(3)

B = ClkActivationTime × GPMC_FCLK(15)

(4)

For single read: D = (RdCycleTime - AccessTime) × (TimeParaGranularity + 1) × GPMC_FCLK(15)

For burst read: D = (RdCycleTime - AccessTime) × (TimeParaGranularity + 1) × GPMC_FCLK(15)

For burst write: D = (WrCycleTime - AccessTime) × (TimeParaGranularity + 1) × GPMC_FCLK(15)

(5)

For single read: E = (CSRdOffTime - AccessTime) × (TimeParaGranularity + 1) × GPMC_FCLK(15)

For burst read: E = (CSRdOffTime - AccessTime) × (TimeParaGranularity + 1) × GPMC_FCLK(15)

For burst write: E = (CSWrOffTime - AccessTime) × (TimeParaGranularity + 1) × GPMC_FCLK(15)

(6)

For csn falling edge (CS activated):

•

Case GPMCFCLKDIVIDER = 0:

–

F = 0.5 × CSExtraDelay × GPMC_FCLK(15)

•

Case GPMCFCLKDIVIDER = 1:

–

F = 0.5 × CSExtraDelay × GPMC_FCLK(15) if (ClkActivationTime and CSOnTime are odd) or (ClkActivationTime and

CSOnTime are even)

–

F = (1 + 0.5 × CSExtraDelay) × GPMC_FCLK(15) otherwise

•

Case GPMCFCLKDIVIDER = 2:

–

F = 0.5 × CSExtraDelay × GPMC_FCLK(15) if ((CSOnTime - ClkActivationTime) is a multiple of 3)

–

F = (1 + 0.5 × CSExtraDelay) × GPMC_FCLK(15) if ((CSOnTime - ClkActivationTime - 1) is a multiple of 3)

–

F = (2 + 0.5 × CSExtraDelay) × GPMC_FCLK(15) if ((CSOnTime - ClkActivationTime - 2) is a multiple of 3)

(7)

For ADV falling edge (ADV activated):

•

Case GPMCFCLKDIVIDER = 0:

–

G = 0.5 × ADVExtraDelay × GPMC_FCLK(15)

•

Case GPMCFCLKDIVIDER = 1:

–

G = 0.5 × ADVExtraDelay × GPMC_FCLK(15) if (ClkActivationTime and ADVOnTime are odd) or (ClkActivationTime and

ADVOnTime are even)

–

G = (1 + 0.5 × ADVExtraDelay) × GPMC_FCLK(15) otherwise

•

Case GPMCFCLKDIVIDER = 2:

–

G = 0.5 × ADVExtraDelay × GPMC_FCLK(15) if ((ADVOnTime - ClkActivationTime) is a multiple of 3)

–

G = (1 + 0.5 × ADVExtraDelay) × GPMC_FCLK(15) if ((ADVOnTime - ClkActivationTime - 1) is a multiple of 3)

–

G = (2 + 0.5 × ADVExtraDelay) × GPMC_FCLK(15) 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(15)

•

Case GPMCFCLKDIVIDER = 1:

–

G = 0.5 × ADVExtraDelay × GPMC_FCLK(15) if (ClkActivationTime and ADVRdOffTime are odd) or (ClkActivationTime and

ADVRdOffTime are even)

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AM2434, AM2432, AM2431

SPRSP65D – APRIL 2021 – REVISED AUGUST 2022

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