AM5728 datasheet(246/415 Pages) TI

246 / 415 page

AM5728, AM5726

SPRS915O – MARCH 2014 – REVISED OCTOBER 2015

www.ti.com

Table 7-26. GPMC/NOR Flash Interface Timing Requirements - Synchronous Mode - 5 Loads

NO.

PARAMETER

DESCRIPTION

MIN

MAX

UNIT

F12

tsu(dV-clkH)

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

2.5

F13

th(clkH-dV)

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

1.9

F21

tsu(waitV-clkH)

Setup time, gpmc_wait[1:0] valid before gpmc_clk high

2.5

F22

th(clkH-waitV)

Hold Time, gpmc_wait[1:0] valid after gpmc_clk high

1.9

Table 7-27. GPMC/NOR Flash Interface Switching Characteristics - Synchronous Mode - 5 Loads

NO.

PARAMETER

DESCRIPTION

MIN

MAX

UNIT

tc(clk)

Cycle time, output clock gpmc_clk period (12)

15.04

td(clkH-nCSV)

Delay time, gpmc_clk rising edge to gpmc_cs[7:0] transition

F-0.13 (6)

F+6.1 (6)

td(clkH-nCSIV)

Delay time, gpmc_clk rising edge to gpmc_cs[7:0] invalid

E+0.7 (5)

E+6.1 (5)

td(ADDV-clk)

Delay time, gpmc_a[27:0] address bus valid to gpmc_clk first edge

B+0.21 (2)

B+6.1 (2)

td(clkH-ADDIV)

Delay time, gpmc_clk rising edge to gpmc_a[27:0] gpmc address bus invalid

0.7

td(nBEV-clk)

Delay time, gpmc_ben[1:0] valid to gpmc_clk rising edge

B-4.9 (2)

B+0.4 (2)

td(clkH-nBEIV)

Delay time, gpmc_clk rising edge to gpmc_ben[1:0] invalid

D-0.4 (4)

D+4.9 (4)

td(clkH-nADV)

Delay time, gpmc_clk rising edge to gpmc_advn_ale transition

G+0.7 (7)

G+6.1 (7)

td(clkH-nADVIV)

Delay time, gpmc_clk rising edge to gpmc_advn_ale invalid

D+0.7 (4)

D+6.1 (4)

F10

td(clkH-nOE)

Delay time, gpmc_clk rising edge to gpmc_oen_ren transition

H+0.42 (8)

H+5.1 (8)

F11

td(clkH-nOEIV)

Delay time, gpmc_clk rising edge to gpmc_oen_ren invalid

E+0.7 (5)

E+5.1 (5)

F14

td(clkH-nWE)

Delay time, gpmc_clk rising edge to gpmc_wen transition

I+0.46 (9)

I+6.1 (9)

F15

td(clkH-Data)

Delay time, gpmc_clk rising edge to gpmc_ad[15:0] data bus transition

J-0.4 (10)

J+4.9 (10)

F17

td(clkH-nBE)

Delay time, gpmc_clk rising edge to gpmc_ben[1:0] transition

J-0.4 (10)

J+5.63

(10)

F18

tw(nCSV)

Pulse duration, gpmc_cs[7:0] low

A (1)

F19

tw(nBEV)

Pulse duration, gpmc_ben[1:0] low

C (3)

F20

tw(nADVV)

Pulse duration, gpmc_advn_ale low

K (11)

F23

td(CLK-GPIO)

Delay time, gpmc_clk transition to gpio6_16 transition (13)

0.96

6.1

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

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

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

with n the page burst access number.

(2) B = ClkActivationTime * GPMC_FCLK

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

For burst read: C = (RdCycleTime + (n – 1) * PageBurstAccessTime) * (TimeParaGranularity + 1) * GPMC_FCLK

For Burst write: C = (WrCycleTime + (n – 1) * PageBurstAccessTime) * (TimeParaGranularity + 1) * GPMC_FCLK with n the page burst

access number.

(4) For single read: D = (RdCycleTime – AccessTime) * (TimeParaGranularity + 1) * GPMC_FCLK

For burst read: D = (RdCycleTime – AccessTime) * (TimeParaGranularity + 1) * GPMC_FCLK

For burst write: D = (WrCycleTime – AccessTime) * (TimeParaGranularity + 1) * GPMC_FCLK

(5) For single read: E = (CSRdOffTime – AccessTime) * (TimeParaGranularity + 1) * GPMC_FCLK

For burst read: E = (CSRdOffTime – AccessTime) * (TimeParaGranularity + 1) * GPMC_FCLK

For burst write: E = (CSWrOffTime – AccessTime) * (TimeParaGranularity + 1) * GPMC_FCLK

(6) For nCS falling edge (CS activated):

Case GpmcFCLKDivider = 0 :

F = 0.5 * CSExtraDelay * GPMC_FCLK Case GpmcFCLKDivider = 1:

F = 0.5 * CSExtraDelay * GPMC_FCLK if (ClkActivationTime and CSOnTime are odd) or (ClkActivationTime and CSOnTime are even)

F = (1 + 0.5 * CSExtraDelay) * GPMC_FCLK otherwise

Case GpmcFCLKDivider = 2:

F = 0.5 * CSExtraDelay * GPMC_FCLK if ((CSOnTime – ClkActivationTime) is a multiple of 3)

F = (1 + 0.5 * CSExtraDelay) * GPMC_FCLK if ((CSOnTime – ClkActivationTime – 1) is a multiple of 3)

F = (2 + 0.5 * CSExtraDelay) * GPMC_FCLK 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 Case GpmcFCLKDivider = 1:

G = 0.5 * ADVExtraDelay * GPMC_FCLK if (ClkActivationTime and ADVOnTime are odd) or (ClkActivationTime and ADVOnTime are

246

Timing Requirements and Switching Characteristics

Submit Documentation Feedback

Product Folder Links: AM5728 AM5726

AM5728 Datasheet(PDF) 246 Page - Texas Instruments

AM5728 Datasheet(HTML) 246 Page - Texas Instruments

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

Datasheet Download

Link URL