AM6548BACDXEAF datasheet(180/282 Pages) TI

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NO.(2) PARAMETER

DESCRIPTION

MODE(19)

MIN

MAX UNIT

td(clkH-advnIV)

Delay time, output clock GPMC_CLK rising edge

to output address valid and address latch enable

GPMC_ADVn_ALE invalid

div_by_1_mode;

GPMC_FCLK_MUX_100;

TIMEPARAGRANULARITY_X1;

no extra_delay

-2.3+D

(4)

4.5+D (4)

F10

td(clkH-oen)

Delay time, output clock GPMC_CLK rising edge to

output enable GPMC_OEn_REn transition

div_by_1_mode;

GPMC_FCLK_MUX_100;

TIMEPARAGRANULARITY_X1;

no extra_delay

-2.3H (8) 3.5+H (8)

F11

td(clkH-oenIV)

Delay time, output clock GPMC_CLK rising edge to

output enable GPMC_OEn_REn invalid

div_by_1_mode;

GPMC_FCLK_MUX_100;

TIMEPARAGRANULARITY_X1;

no extra_delay

-2.3+E

(8)

3.5+E (8)

F14

td(clkH-wen)

Delay time, output clock GPMC_CLK rising edge to

output write enable GPMC_WEn transition

div_by_1_mode;

GPMC_FCLK_MUX_100;

TIMEPARAGRANULARITY_X1;

no extra_delay

-2.3+I (9)

4.5+I (9)

F15

td(clkH-do)

Delay time, output clock GPMC_CLK rising edge to

output data GPMC_AD[15:0] transition (11)

div_by_1_mode;

GPMC_FCLK_MUX_100;

TIMEPARAGRANULARITY_X1

-2.3+J

(10)

2.7+J (10)

F15

td(clkL-do)

Delay time, GPMC_CLK falling edge to

GPMC_AD[15:0] data bus transition (12)

div_by_1_mode;

GPMC_FCLK_MUX_100;

TIMEPARAGRANULARITY_X1

-2.3+J

(10)

2.7+J (10)

F15

td(clkL-do).

Delay time, GPMC_CLK falling edge to

GPMC_AD[15:0] data bus transition (13)

div_by_1_mode;

GPMC_FCLK_MUX_100;

TIMEPARAGRANULARITY_X1

-2.3+J

(10)

2.7+J (10)

F17

td(clkH-be[x]n)

Delay time, output clock GPMC_CLK rising edge

to output lower byte enable and command latch

enable GPMC_BE0n_CLE transition (11)

div_by_1_mode;

GPMC_FCLK_MUX_100;

TIMEPARAGRANULARITY_X1

-2.3+J

(10)

1.9+J (10)

F17

td(clkL-be[x]n)

Delay time, GPMC_CLK falling edge to

GPMC_BE0n_CLE, GPMC_BE1n transition (12)

div_by_1_mode;

GPMC_FCLK_MUX_100;

TIMEPARAGRANULARITY_X1

-2.3+J

(10)

1.9+J (10)

F17

td(clkL-be[x]n).

Delay time, GPMC_CLK falling edge to

GPMC_BE0n_CLE, GPMC_BE1n transition (13)

div_by_1_mode;

GPMC_FCLK_MUX_100;

TIMEPARAGRANULARITY_X1

-2.3+J

(10)

1.9+J (10)

F18

tw(csnV)

Pulse duration, output chip select GPMC_CSn[x]

low (14)

Read

0+A (1)

Write

0+A (1)

F19

tw(be[x]nV)

Pulse duration, output lower byte enable and

command latch enable GPMC_BE0n_CLE, output

upper byte enable GPMC_BE1n low

Read

0+C (3)

Write

0+C (3)

F20

tw(advnV)

Pulse duration, output address valid and address

latch enable GPMC_ADVn_ALE low

Read

0+K (16)

Write

0+K (16)

(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)

AM6548, AM6528, AM6526

SPRSP52B – DECEMBER 2019 – REVISED JUNE 2021

www.ti.com

180

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AM6548BACDXEAF Datasheet(PDF) 180 Page - Texas Instruments

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