AM5728 datasheet(257/415 Pages) TI1

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AM5729, AM5728, AM5726

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SPRS953F – DECEMBER 2015 – REVISED MAY 2019

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Timing Requirements and Switching Characteristics

Table 7-29. GPMC/NOR Flash Interface Timing Requirements - Asynchronous Mode (continued)

NO.

PARAMETER

DESCRIPTION

MIN

MAX

UNIT

FA20

tacc1-pgmode(DAT)

Page Mode Successive Data Maximum Access Time (GPMC_FCLK

cycles)

P (2)

cycles

FA21

tacc2-pgmode(DAT)

Page Mode First Data Maximum Access Time (GPMC_FCLK cycles)

H (1)

cycles

tsu(DV-OEH)

Setup time, read gpmc_ad[15:0] valid before gpmc_oen_ren high

1.9

th(OEH-DV)

Hold time, read gpmc_ad[15:0] valid after gpmc_oen_ren high

(1) H = Access Time * (TimeParaGranularity + 1)

(2) P = PageBurstAccessTime * (TimeParaGranularity + 1)

Table 7-30. GPMC/NOR Flash Interface Switching Characteristics - Asynchronous Mode

NO.

PARAMETER

DESCRIPTION

MIN

MAX

UNIT

tr(DO)

Rising time, gpmc_ad[15:0] output data

0.447

4.067

tf(DO)

Fallling time, gpmc_ad[15:0] output data

0.43

4.463

FA0

tw(nBEV)

Pulse duration, gpmc_ben[1:0] valid time

N (1)

FA1

tw(nCSV)

Pulse duration, gpmc_cs[7:0] low

A (2)

FA3

td(nCSV-nADVIV)

Delay time, gpmc_cs[7:0] valid to gpmc_advn_ale invalid

B - 2 (3)

B + 4 (3)

FA4

td(nCSV-nOEIV)

Delay time, gpmc_cs[7:0] valid to gpmc_oen_ren invalid (Single read)

C - 2 (4)

C + 4 (4)

FA9

td(AV-nCSV)

Delay time, address bus valid to gpmc_cs[7:0] valid

J - 2 (5)

J + 4 (5)

FA10 td(nBEV-nCSV)

Delay time, gpmc_ben[1:0] valid to gpmc_cs[7:0] valid

J - 2 (5)

J + 4 (5)

FA12 td(nCSV-nADVV)

Delay time, gpmc_cs[7:0] valid to gpmc_advn_ale valid

K - 2 (6)

K + 4 (6)

FA13 td(nCSV-nOEV)

Delay time, gpmc_cs[7:0] valid to gpmc_oen_ren valid

L - 2 (7)

L + 4 (7)

FA16 tw(AIV)

Pulse duration, address invalid between 2 successive R/W accesses

G (8)

FA18 td(nCSV-nOEIV)

Delay time, gpmc_cs[7:0] valid to gpmc_oen_ren invalid (Burst read)

I - 2 (9)

I + 4 (9)

FA20 tw(AV)

Pulse duration, address valid : 2nd, 3rd and 4th accesses

D (10)

FA25 td(nCSV-nWEV)

Delay time, gpmc_cs[7:0] valid to gpmc_wen valid

E - 2 (11)

E + 4 (11)

FA27 td(nCSV-nWEIV)

Delay time, gpmc_cs[7:0] valid to gpmc_wen invalid

F - 2 (12)

F + 4 (12)

FA28 td(nWEV-DV)

Delay time, gpmc_ wen valid to data bus valid

FA29 td(DV-nCSV)

Delay time, data bus valid to gpmc_cs[7:0] valid

J - 2 (5)

J + 4 (5)

FA37 td(nOEV-AIV)

Delay time, gpmc_oen_ren valid to gpmc_ad[15:0] multiplexed address bus

phase end

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

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

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

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

(8) G = Cycle2CycleDelay * GPMC_FCLK * (TimeParaGranularity +1)

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

GPMC_FCLK

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

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

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

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