MCIMX6DP6AYM2AB datasheet(84/160 Pages) NXP

tên linh kiện	MCIMX6DP6AYM2AB

Giải thích chi tiết về linh kiện	i.MX 6DualPlus/6QuadPlus Applications Processors Industrial Products

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

NXP Semiconductors

Electrical Characteristics

4.12.5.2

RMII Mode Timing

In RMII mode, ENET_CLK is used as the REF_CLK, which is a 50 MHz ± 50 ppm continuous reference

clock. ENET_RX_EN is used as the ENET_RX_EN in RMII. Other signals under RMII mode include

ENET_TX_EN, ENET0_TXD[1:0], ENET_RXD[1:0] and ENET_RX_ER.

Figure 44 shows RMII mode timings. Table 53 describes the timing parameters (M16–M21) shown in the

figure.

Figure 44. RMII Mode Signal Timing Diagram

Table 53. RMII Signal Timing

Characteristic

Min

Max

Unit

M16

ENET_CLK pulse width high

35%

65%

ENET_CLK period

M17

ENET_CLK pulse width low

35%

65%

ENET_CLK period

M18

ENET_CLK to ENET0_TXD[1:0], ENET_TX_EN invalid

—

M19

ENET_CLK to ENET0_TXD[1:0], ENET_TX_EN valid

—

13.5

M20

ENET_RXD[1:0], ENET_RX_EN(ENET_RX_EN), ENET_RX_ER to

ENET_CLK setup

4—

M21

ENET_CLK to ENET_RXD[1:0], ENET_RX_EN, ENET_RX_ER hold

—

ENET_CLK (input)

ENET_TX_EN

M16

M17

M18

M19

M20

M21

ENET_RXD[1:0]

ENET0_TXD[1:0] (output)

ENET_RX_ER

ENET_RX_EN (input)

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