Datasheet

GPMC_FCLK
gpmc_ncsx
gpmc_nbe0_cle
gpmc_nadv_ale
gpmc_noe
gpmc_nwe
gpmc_a[16:1]_d[15:0]
Command
GNF0
GNF1
GNF2
GNF3 GNF4
GNF5
GNF6
030-032
AM3517, AM3505
SPRS550E –OCTOBER 2009–REVISED MARCH 2013 www.ti.com
Table 6-12. GPMC/NAND Flash Interface Switching Characteristics (continued)
NO. PARAMETER 1.8V, 3.3V UNIT
MIN MAX
GNF15 t
w(nOEIV-nCSIV)
Delay time, gpmc_noe invalid M(12) - 0.2 M(12) + 2.0 ns
to gpmc_ncsx(13) invalid
(1) A = (WEOffTime – WEOnTime) * (TimeParaGranularity + 1) * GPMC_FCLK
(2) B = ((WEOnTime – CSOnTime) * (TimeParaGranularity + 1) + 0.5 * (WEExtraDelay – CSExtraDelay)) * GPMC_FCLK
(3) C = ((WEOnTime – ADVOnTime) * (TimeParaGranularity + 1) + 0.5 * (WEExtraDelay – ADVExtraDelay)) * GPMC_FCLK
(4) D = (WEOnTime * (TimeParaGranularity + 1) + 0.5 * WEExtraDelay ) * GPMC_FCLK
(5) E = (WrCycleTime – WEOffTime * (TimeParaGranularity + 1) – 0.5 * WEExtraDelay ) * GPMC_FCLK
(6) F = (ADVWrOffTime – WEOffTime * (TimeParaGranularity + 1) + 0.5 * (ADVExtraDelay – WEExtraDelay ) * GPMC_FCLK
(7) G = (CSWrOffTime – WEOffTime * (TimeParaGranularity + 1) + 0.5 * (CSExtraDelay – WEExtraDelay ) * GPMC_FCLK
(8) H = WrCycleTime * (1 + TimeParaGranularity) * GPMC_FCLK
(9) I = ((OEOnTime – CSOnTime) * (TimeParaGranularity + 1) + 0.5 * (OEExtraDelay – CSExtraDelay)) * GPMC_FCLK
(10) K = (OEOffTime – OEOnTime) * (1 + TimeParaGranularity) * GPMC_FCLK
(11) L = RdCycleTime * (1 + TimeParaGranularity) * GPMC_FCLK
(12) M = (CSRdOffTime – OEOffTime * (TimeParaGranularity + 1) + 0.5 * (CSExtraDelay – OEExtraDelay ) * GPMC_FCLK
(13) In gpmc_ncsx, x is equal to 0, 1, 2, 3, 4, 5, 6, or 7.
In gpmc_ncsx, x is equal to 0, 1, 2, 3, 4, 5, 6, or 7.
Figure 6-13. GPMC/NAND Flash – Command Latch Cycle Timing
126 Timing Requirements and Switching Characteristics Copyright © 2009–2013, Texas Instruments Incorporated
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