AM4376 datasheet(160/261 Pages) TI

160 / 261 page

AM4376, AM4377, AM4378, AM4379

SPRS851B – JUNE 2014 – REVISED APRIL 2015

www.ti.com

Table 5-44. GPMC and NOR Flash Switching Characteristics—Asynchronous Mode (continued)

OPP100

OPP50

NO.

PARAMETER

UNIT

MIN

MAX

MIN

MAX

FA27

td(csnV-wenIV)

Delay time, output chip select gpmc_csn[x](13)

F(6) - 0.2

F(6) + 2.0

F(6) - 0.2

F(6) + 2.0

valid to output write enable gpmc_wen invalid

FA28

td(wenV-dV)

Delay time, output write enable gpmc_ wen

2.8

valid to output data gpmc_ad[15:0] valid

FA29

td(dV-csnV)

Delay time, output data gpmc_ad[15:0] valid to

J(9) - 0.2

J(9) + 2.8

J(9) - 0.2

J(9) + 2.8

output chip select gpmc_csn[x](13) valid

FA37

td(oenV-aIV)

Delay time, output enable gpmc_oen valid to

2.8

output address gpmc_ad[15:0] phase end

(1) For single read: A = (CSRdOffTime - CSOnTime) * (TimeParaGranularity + 1) * GPMC_FCLK(14)

For single write: A = (CSWrOffTime - CSOnTime) * (TimeParaGranularity + 1) * GPMC_FCLK(14)

For burst read: A = (CSRdOffTime - CSOnTime + (n - 1) * PageBurstAccessTime) * (TimeParaGranularity + 1) * GPMC_FCLK(14)

For burst write: A = (CSWrOffTime - CSOnTime + (n - 1) * PageBurstAccessTime) * (TimeParaGranularity + 1) * GPMC_FCLK(14)

with n being the page burst access number

(2) For reading: B = ((ADVRdOffTime - CSOnTime) * (TimeParaGranularity + 1) + 0.5 * (ADVExtraDelay - CSExtraDelay)) *

GPMC_FCLK(14)

For writing: B = ((ADVWrOffTime - CSOnTime) * (TimeParaGranularity + 1) + 0.5 * (ADVExtraDelay - CSExtraDelay)) * GPMC_FCLK(14)

(3) C = ((OEOffTime - CSOnTime) * (TimeParaGranularity + 1) + 0.5 * (OEExtraDelay - CSExtraDelay)) * GPMC_FCLK(14)

(4) D = PageBurstAccessTime * (TimeParaGranularity + 1) * GPMC_FCLK(14)

(5) E = ((WEOnTime - CSOnTime) * (TimeParaGranularity + 1) + 0.5 * (WEExtraDelay - CSExtraDelay)) * GPMC_FCLK(14)

(6) F = ((WEOffTime - CSOnTime) * (TimeParaGranularity + 1) + 0.5 * (WEExtraDelay - CSExtraDelay)) * GPMC_FCLK(14)

(7) G = Cycle2CycleDelay * GPMC_FCLK(14)

(8) I = ((OEOffTime + (n - 1) * PageBurstAccessTime - CSOnTime) * (TimeParaGranularity + 1) + 0.5 * (OEExtraDelay - CSExtraDelay)) *

GPMC_FCLK(14)

(9) J = (CSOnTime * (TimeParaGranularity + 1) + 0.5 * CSExtraDelay) * GPMC_FCLK(14)

(10) K = ((ADVOnTime - CSOnTime) * (TimeParaGranularity + 1) + 0.5 * (ADVExtraDelay - CSExtraDelay)) * GPMC_FCLK(14)

(11) L = ((OEOnTime - CSOnTime) * (TimeParaGranularity + 1) + 0.5 * (OEExtraDelay - CSExtraDelay)) * GPMC_FCLK(14)

(12) For single read: N = RdCycleTime * (TimeParaGranularity + 1) * GPMC_FCLK(14)

For single write: N = WrCycleTime * (TimeParaGranularity + 1) * GPMC_FCLK(14)

For burst read: N = (RdCycleTime + (n - 1) * PageBurstAccessTime) * (TimeParaGranularity + 1) * GPMC_FCLK(14)

For burst write: N = (WrCycleTime + (n - 1) * PageBurstAccessTime) * (TimeParaGranularity + 1) * GPMC_FCLK(14)

(13) In gpmc_csn[x], x is equal to 0, 1, 2, 3, 4, 5, or 6.

(14) GPMC_FCLK is general-purpose memory controller internal functional clock period in ns.

160

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