Texas Instruments AM335x Sitara User Manual

AM3359, AM3358, AM3357, AM3356, AM3354, AM3352
www.ti.com SPRS717H –OCTOBER 2011–REVISED MAY 2015
Table 7-22. GPMC and NOR Flash Switching Characteristics – Synchronous Mode
(2)
(continued)
OPP100 OPP50
NO. PARAMETER UNIT
MIN MAX MIN MAX
F18 t
w(csnV)
Pulse duration, output chip select Read A
(1)
A
(1)
ns
gpmc_csn[x]
(14)
low
Write A
(1)
A
(1)
ns
F19 t
w(be[x]nV)
Pulse duration, output lower byte enable Read C
(3)
C
(3)
ns
and command latch enable
Write C
(3)
C
(3)
ns
gpmc_be0n_cle, output upper byte enable
gpmc_be1n low
F20 t
w(advnV)
Pulse duration, output address valid and Read K
(16)
K
(16)
ns
address latch enable gpmc_advn_ale low
Write K
(16)
K
(16)
ns
(1) For single read: A = (CSRdOffTime – CSOnTime) × (TimeParaGranularity + 1) × GPMC_FCLK
(17)
For burst read: A = (CSRdOffTime – CSOnTime + (n – 1) × PageBurstAccessTime) × (TimeParaGranularity + 1) × GPMC_FCLK
(17)
For burst write: A = (CSWrOffTime – CSOnTime + (n – 1) × PageBurstAccessTime) × (TimeParaGranularity + 1) × GPMC_FCLK
(17)
With n being the page burst access number.
(2) B = ClkActivationTime × GPMC_FCLK
(17)
(3) For single read: C = RdCycleTime × (TimeParaGranularity + 1) × GPMC_FCLK
(17)
For burst read: C = (RdCycleTime + (n – 1) × PageBurstAccessTime) × (TimeParaGranularity + 1) × GPMC_FCLK
(17)
For burst write: C = (WrCycleTime + (n – 1) × PageBurstAccessTime) × (TimeParaGranularity + 1) × GPMC_FCLK
(17)
With n being the page burst access number.
(4) For single read: D = (RdCycleTime – AccessTime) × (TimeParaGranularity + 1) × GPMC_FCLK
(17)
For burst read: D = (RdCycleTime – AccessTime) × (TimeParaGranularity + 1) × GPMC_FCLK
(17)
For burst write: D = (WrCycleTime – AccessTime) × (TimeParaGranularity + 1) × GPMC_FCLK
(17)
(5) For single read: E = (CSRdOffTime – AccessTime) × (TimeParaGranularity + 1) × GPMC_FCLK
(17)
For burst read: E = (CSRdOffTime – AccessTime) × (TimeParaGranularity + 1) × GPMC_FCLK
(17)
For burst write: E = (CSWrOffTime – AccessTime) × (TimeParaGranularity + 1) × GPMC_FCLK
(17)
(6) For csn falling edge (CS activated):
– Case GpmcFCLKDivider = 0:
– F = 0.5 × CSExtraDelay × GPMC_FCLK
(17)
– Case GpmcFCLKDivider = 1:
– F = 0.5 × CSExtraDelay × GPMC_FCLK
(17)
if (ClkActivationTime and CSOnTime are odd) or (ClkActivationTime and
CSOnTime are even)
– F = (1 + 0.5 × CSExtraDelay) × GPMC_FCLK
(17)
otherwise
– Case GpmcFCLKDivider = 2:
– F = 0.5 × CSExtraDelay × GPMC_FCLK
(17)
if ((CSOnTime – ClkActivationTime) is a multiple of 3)
– F = (1 + 0.5 × CSExtraDelay) × GPMC_FCLK
(17)
if ((CSOnTime – ClkActivationTime – 1) is a multiple of 3)
– F = (2 + 0.5 × CSExtraDelay) × GPMC_FCLK
(17)
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
(17)
– Case GpmcFCLKDivider = 1:
– G = 0.5 × ADVExtraDelay × GPMC_FCLK
(17)
if (ClkActivationTime and ADVOnTime are odd) or (ClkActivationTime and
ADVOnTime are even)
– G = (1 + 0.5 × ADVExtraDelay) × GPMC_FCLK
(17)
otherwise
– Case GpmcFCLKDivider = 2:
– G = 0.5 × ADVExtraDelay × GPMC_FCLK
(17)
if ((ADVOnTime – ClkActivationTime) is a multiple of 3)
– G = (1 + 0.5 × ADVExtraDelay) × GPMC_FCLK
(17)
if ((ADVOnTime – ClkActivationTime – 1) is a multiple of 3)
– G = (2 + 0.5 × ADVExtraDelay) × GPMC_FCLK
(17)
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
(17)
– Case GpmcFCLKDivider = 1:
– G = 0.5 × ADVExtraDelay × GPMC_FCLK
(17)
if (ClkActivationTime and ADVRdOffTime are odd) or (ClkActivationTime and
ADVRdOffTime are even)
– G = (1 + 0.5 × ADVExtraDelay) × GPMC_FCLK
(17)
otherwise
– Case GpmcFCLKDivider = 2:
– G = 0.5 × ADVExtraDelay × GPMC_FCLK
(17)
if ((ADVRdOffTime – ClkActivationTime) is a multiple of 3)
– G = (1 + 0.5 × ADVExtraDelay) × GPMC_FCLK
(17)
if ((ADVRdOffTime – ClkActivationTime – 1) is a multiple of 3)
– G = (2 + 0.5 × ADVExtraDelay) × GPMC_FCLK
(17)
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
(17)
– Case GpmcFCLKDivider = 1:
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Texas Instruments AM335x Sitara Specifications

General

Brand	Texas Instruments
Model	AM335x Sitara
Category	Processor
Language	English