AM261...ZNC datasheet(165/218 Pages) TI2

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tO9t

tO8t

tO7t

tO11t

O12

O10

OSPI_CSn

OSPI_CLK

OSPI_D[i:0]

Figure 6-62. OSPI Switching Characteristics – Tap SDR, No Loopback

6.11.5.13.3.2 OSPI0 Tap DDR Timing

6.11.5.13.3.2.1 OSPI Timing Requirements - Tap DDR Mode

NO.

PARAMETER

DESCRIPTION

MODE

MIN

MAX

UNIT

O13

tsu(D-CLK)

Setup time, OSPI_D[7:0] valid

before active OSPI_CLK edge

No Loopback

12.04 - (0.975 ×

T(1) × R(2))

O14

th(CLK-D)

Hold time, OSPI_D[7:0] valid after

active OSPI_CLK edge

No Loopback

1.84 + (0.975 ×

T(1) × R(2))

(1)

T = OSPI_RD_DATA_CAPTURE_REG[DELAY_FLD]

(2)

R = REFCLK cycle time in ns

tO14t

O13

OSPI_CLK

OSPI_D[i:0]

Figure 6-63. OSPI0 Timing Requirements – Tap DDR, No Loopback

6.11.5.13.3.2.2 OSPI Switching Characteristics - Tap DDR Mode

NO.

PARAMETER

DESCRIPTION

MODE

MIN

MAX

UNIT

tc(CLK)

Cycle time, OSPI_CLK

tw(CLKL)

Pulse duration, OSPI_CLK low

0.475P(1) - 0.3

tw(CLKH)

Pulse duration, OSPI_CLK high

0.475P(1) - 0.3

td(CSn-CLK)

Delay time, OSPI_CSn[1:0] active edge

to OSPI_CLK rising edge

0.475P(1) + (0.975

× M(2) × R(4)) - 1

0.525P(1) + (1.025

× M(2) × R(4)) + 1

td(CLK-CSn)

Delay time, OSPI_CLK rising edge to

OSPI_CSn[1:0] inactive edge

0.475P(1) + (0.975

× N(3) × R(4)) - 1

0.525P(1) + (1.025

× N(3) × R(4)) + 1

td(CLK-D)

Delay time, OSPI_CLK active edge to

OSPI_D[7:0] transition

–17.94 + (0.975 ×

T(5) × R(4))

–1.56 + (1.025 ×

T(5) × R(4))

(1)

P = CLK cycle time = SCLK period in ns

(2)

M = OSPI_DEV_DELAY_REG[D_INIT_FLD]

(3)

N = OSPI_DEV_DELAY_REG[D_AFTER_FLD]

(4)

R = REFCLK cycle time in ns

(5)

T = OSPI_RD_DATA_CAPTURE_REG[DDR_READ_DELAY_FLD]

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AM2612, AM2611, AM2611-Q1, AM2612-Q1

SPRSPA7C – SEPTEMBER 2024 – REVISED JULY 2025

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Product Folder Links: AM2612 AM2611 AM2611-Q1 AM2612-Q1

AM261...ZNC 数据表(PDF) 165 Page - Texas Instruments

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