AM5728 datasheet(250/415 Pages) TI1

250 / 415 page

250

AM5729, AM5728, AM5726

SPRS953F – DECEMBER 2015 – REVISED MAY 2019

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Product Folder Links: AM5729 AM5728 AM5726

Timing Requirements and Switching Characteristics

- I = (1 + 0.5 * WEExtraDelay) * GPMC_FCLK otherwise

Case GpmcFCLKDivider = 2:

- I = 0.5 * WEExtraDelay * GPMC_FCLK if ((WEOnTime – ClkActivationTime) is a multiple of 3)

- I = (1 + 0.5 * WEExtraDelay) * GPMC_FCLK if ((WEOnTime – ClkActivationTime – 1) is a multiple of 3)

- I = (2 + 0.5 * WEExtraDelay) * GPMC_FCLK if ((WEOnTime – ClkActivationTime – 2) is a multiple of 3)

Case GpmcFCLKDivider = 3:

- I = 0.5 * WEExtraDelay * GPMC_FCLK if ((WEOnTime - ClkActivationTime) is a multiple of 4)

- I = (1 + 0.5 * WEExtraDelay) * GPMC_FCLK if ((WEOnTime - ClkActivationTime - 1) is a multiple of 4)

- I = (2 + 0.5 * WEExtraDelay) * GPMC_FCLK if ((WEOnTime - ClkActivationTime - 2) is a multiple of 4)

- I = (3 + 0.5 * WEExtraDelay) * GPMC_FCLK if ((WEOnTime - ClkActivationTime - 3) is a multiple of 4)

For WE rising edge (WE deactivated):

Case GpmcFCLKDivider = 0:

- I = 0.5 * WEExtraDelay * GPMC_FCLK

Case GpmcFCLKDivider = 1:

- I = 0.5 * WEExtraDelay * GPMC_FCLK if (ClkActivationTime and WEOffTime are odd) or (ClkActivationTime and WEOffTime are

even)

- I = (1 + 0.5 * WEExtraDelay) * GPMC_FCLK otherwise

Case GpmcFCLKDivider = 2:

- I = 0.5 * WEExtraDelay * GPMC_FCLK if ((WEOffTime – ClkActivationTime) is a multiple of 3)

- I = (1 + 0.5 * WEExtraDelay) * GPMC_FCLK if ((WEOffTime – ClkActivationTime – 1) is a multiple of 3)

- I = (2 + 0.5 * WEExtraDelay) * GPMC_FCLK if ((WEOffTime – ClkActivationTime – 2) is a multiple of 3)

Case GpmcFCLKDivider = 3:

- I = 0.5 * WEExtraDelay * GPMC_FCLK if ((WEOffTime - ClkActivationTime) is a multiple of 4)

- I = (1 + 0.5 * WEExtraDelay) * GPMC_FCLK if ((WEOffTime - ClkActivationTime - 1) is a multiple of 4)

- I = (2 + 0.5 * WEExtraDelay) * GPMC_FCLK if ((WEOffTime - ClkActivationTime - 2) is a multiple of 4)

- I = (3 + 0.5 * WEExtraDelay) * GPMC_FCLK if ((WEOffTime - ClkActivationTime - 3) is a multiple of 4)

(10) J = GPMC_FCLK period, where GPMC_FCLK is the General Purpose Memory Controller internal functional clock

(11) For read:

K = (ADVRdOffTime – ADVOnTime) * (TimeParaGranularity + 1) * GPMC_FCLK

For write: K = (ADVWrOffTime – ADVOnTime) * (TimeParaGranularity + 1) * GPMC_FCLK

(12) The gpmc_clk output clock maximum and minimum frequency is programmable in the I/F module by setting the GPMC_CONFIG1_CSx

configuration register bit fields GpmcFCLKDivider

(13) gpio6_16 programmed to MUXMODE=9 (clkout1), CM_CLKSEL_CLKOUTMUX1 programmed to 7 (CORE_DPLL_OUT_DCLK),

CM_CLKSEL_CORE_DPLL_OUT_CLK_CLKOUTMUX programmed to 1.

(14) CSEXTRADELAY = 0, ADVEXTRADELAY = 0, WEEXTRADELAY = 0, OEEXTRADELAY = 0. Extra half-GPMC_FCLK cycle delay

mode is not timed.

AM5728 Datasheet(PDF) 250 Page - Texas Instruments

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