MSC8122VT8000 datasheet(35/48 Pages) FREESCALE

tên linh kiện	MSC8122VT8000

Giải thích chi tiết về linh kiện	Quad Digital Signal Processor

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MSC8122 Quad Digital Signal Processor Data Sheet, Rev. 15

Freescale Semiconductor

2.5.10.2

MII Mode Timing

2.5.10.3 RMII Mode

Table 25. MII Mode Signal Timing

No.

Characteristics

Min

Max

Unit

803

ETHRX_DV, ETHRXD[0–3], ETHRX_ER to ETHRX_CLK rising edge set-up time

3.5

—

804

ETHRX_CLK rising edge to ETHRX_DV, ETHRXD[0–3], ETHRX_ER hold time

3.5

—

805

ETHTX_CLK to ETHTX_EN, ETHTXD[0–3], ETHTX_ER output delay

•1.1 V core

•1.2 V core

14.6

12.6

Figure 24. MII Mode Signal Timing

Table 26. RMII Mode Signal Timing

No.

Characteristics

1.1 V Core

1.2 V Core

Unit

Min

Max

Min

Max

806

ETHTX_EN,ETHRXD[0–1], ETHCRS_DV, ETHRX_ER to ETHREF_CLK rising

edge set-up time

1.6

—

807

ETHREF_CLK rising edge to ETHRXD[0–1], ETHCRS_DV, ETHRX_ER hold

time

1.6

—

1.6

—

811

ETHREF_CLK rising edge to ETHTXD[0–1], ETHTX_EN output delay.

12.5

Figure 25. RMII Mode Signal Timing

Valid

ETHRX_CLK

ETHRX_DV

ETHRXD[0–3]

ETHTX_CLK

ETHRX_ER

ETHTX_EN

ETHTXD[0–3]

Valid

ETHTX_ER

803

804

805

Valid

ETHREF_CLK

ETHCRS_DV

ETHRXD[0–1]

ETHRX_ER

807

806

ETHTX_EN

ETHTXD[0–1]

Valid

811

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