DM385 datasheet(190/281 Pages) TI

190 / 281 page

DM385, DM388

SPRS821D – MARCH 2013 – REVISED DECEMBER 2013

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Table 8-29. Timing Requirements for GPMC and NOR Flash Interface - Asynchronous Mode

(see Figure 8-27, Figure 8-28 for Non-Multiplexed Mode )

(see Figure 8-29, Figure 8-31 for Multiplexed Mode)

OPP100/OPP120/Turbo/Nitr

NO.

UNIT

MIN

MAX

tacc(DAT)

Data maximum access time (GPMC_FCLK cycles)

H(1)

cycles

Page mode successive data maximum access time (GPMC_FCLK

tacc1-pgmode(DAT)

P(2)

cycles

cycles)

tacc2-pgmode(DAT)

Page mode first data maximum access time (GPMC_FCLK cycles)

H(1)

cycles

(1)

H = AccessTime * (TimeParaGranularity + 1)

(2)

P = PageBurstAccessTime * (TimeParaGranularity + 1).

Table 8-30. Switching Characteristics Over Recommended Operating Conditions for GPMC and NOR

Flash Interface - Asynchronous Mode

(see Figure 8-27, Figure 8-28, Figure 8-29, Figure 8-30 for Non-Multiplexed Modes)

(see Figure 8-31, Figure 8-32 for Multiplexed Modes)

OPP100/OPP120/Turb

o/Nitro

PARAMETER

UNIT

MIN

MAX

tw(nBEV)

Pulse duration, GPMC_BE0_CLE, GPMC_BE1 valid time

N(1)

tw(nCSV)

Pulse duration, GPMC_CS[x] low

A(2)

td(nCSV-nADVIV)

Delay time, GPMC_CS[x] valid to GPMC_NADV_ALE invalid

B - 0.2(3)

B + 2.0(3)

td(nCSV-nOEIV)

Delay time, GPMC_CS[x] valid to GPMC_OE_RE invalid (single read)

C - 0.2(4)

C + 2.0(4)

td(AV-nCSV)

Delay time, GPMC_A[27:0] address bus valid to GPMC_CS[x] valid

J - 0.2(5)

J + 2.0(5)

td(nBEV-nCSV)

Delay time, GPMC_BE0_CLE, GPMC_BE1 valid to GPMC_CS[x] valid

J - 0.2(5)

J + 2.0(5)

td(nCSV-nADVV)

Delay time, GPMC_CS[x] valid to GPMC_ADV_ALE valid

K - 0.2(6)

K + 2.0(6)

td(nCSV-nOEV)

Delay time, GPMC_CS[x] valid to GPMC_OE_RE valid

L - 0.2(7)

L + 2.0(7)

Pulse duration, GPMC_A[27:0] address bus invalid between 2 successive R/W

tw(AIV)

G(8)

accesses

td(nCSV-nOEIV)

Delay time, GPMC_CS[x] valid to GPMC_OE_RE invalid (burst read)

I - 0.2(9)

I + 2.0(9)

Pulse duration, GPMC_A[27:0] address bus valid: second, third and fourth

tw(AV)

D(10)

accesses

td(nCSV-nWEV)

Delay time, GPMC_CS[x] valid to GPMC_WE valid

E - 0.2(11)

E + 2.0(11)

(1)

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

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

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

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

(2)

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

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

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

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

(3)

= B - nCS Max Delay + nADV Min Delay

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

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

(4)

= C - nCS Max Delay + nOE Min Delay

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

(5)

= J - Address Max Delay + nCS Min Delay

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

(6)

= K - nCS Max Delay + nADV Min Delay

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

(7)

= L - nCS Max Delay + nOE Min Delay

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

(8)

G = Cycle2CycleDelay * GPMC_FCLK

(9)

= I - nCS Max Delay + nOE Min Delay

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

GPMC_FCLK

(10) D = PageBurstAccessTime * (TimeParaGranularity + 1) * GPMC_FCLK

(11) = E - nCS Max Delay + nWE Min Delay

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

190

Peripheral Information and Timings

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