PCIMX6QP6AVT2AB datasheet(65/160 Pages) NXP

65 / 160 page

Electrical Characteristics

i.MX 6DualPlus/6QuadPlus Applications Processors Industrial Products, Rev. 3, 11/2018

NXP Semiconductors

In EDO mode (Figure 26), NF16/NF17 are different from the definition in non-EDO mode (Figure 25).

They are called tREA/tRHOH (NAND_RE_B access time/NAND_RE_B HIGH to output hold). The

typical value for them are 16 ns (max for tREA)/15 ns (min for tRHOH) at 50 MB/s EDO mode. In EDO

mode, GPMI will sample NAND_DATAxx at rising edge of delayed NAND_RE_B provided by an

internal DPLL. The delay value can be controlled by GPMI_CTRL1.RDN_DELAY (see the GPMI chapter

of the i.MX 6DualPlus/6QuadPlus reference manual (IMX6DQPRM)). The typical value of this control

the delay value should be made larger to compensate the board delay.

NF16

Data setup on read

tDSR

—

(DS

× T -0.67)/18.38 [see 5,6]ns

NF17

Data hold on read

tDHR

0.82/11.83 [see 5,6]—

1 The GPMI asynchronous mode output timing can be controlled by the module’s internal registers

HW_GPMI_TIMING0_ADDRESS_SETUP, HW_GPMI_TIMING0_DATA_SETUP, and HW_GPMI_TIMING0_DATA_HOLD.

This AC timing depends on these registers settings. In the table, AS/DS/DH represents each of these settings.

AS minimum value can be 0, while DS/DH minimum value is 1.

3 T = GPMI clock period -0.075ns (half of maximum p-p jitter).

4 NF12 is met automatically by the design.

5 Non-EDO mode.

6 EDO mode, GPMI clock ≈ 100 MHz

(AS=DS=DH=1, GPMI_CTL1 [RDN_DELAY] = 8, GPMI_CTL1 [HALF_PERIOD] = 0).

Table 40. Asynchronous Mode Timing Parameters1 (continued)

Parameter

Symbol

Timing

T = GPMI Clock Cycle

Unit

Min

Max

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