MPC8308 datasheet(19/90 Pages) FREESCALE

No. de pieza	MPC8308

Descripción Electrónicos	MPC8308 PowerQUICC II Pro Processor Hardware Specification

PDF	90 Pages

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Fabricante Electrónico	FREESCALE [Freescale Semiconductor, Inc]

Página de inicio	http://www.freescale.com

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19 / 90 page

MPC8308 PowerQUICC II Pro Processor Hardware Specification, Rev. 2

Freescale Semiconductor

Ethernet: Three-Speed Ethernet, MII Management

Figure 9 shows the MII receive AC timing diagram.

Figure 9. MII Receive AC Timing Diagram RMII AC Timing Specifications

Figure 10 provides the AC test load.

Figure 10. AC Test Load

8.2.2

RGMII AC Timing Specifications

Table 25 presents the RGMII AC timing specifications.

Table 25. RGMII AC Timing Specifications

At recommended operating conditions with LVDD of 2.5 V ± 5%.

Parameter/Condition

Symbol 1

Min

Typ

Max

Unit

Data to clock output skew (at transmitter)

tSKRGT

–0.6

—

0.6

Data to clock input skew (at receiver) 2

tSKRGT

1.0

—

2.6

Clock cycle duration 3

tRGT

7.2

8.0

8.8

Duty cycle for 1000Base-T 4, 5

tRGTH/tRGT

Duty cycle for 10BASE-T and 100BASE-TX 3, 5

tRGTH/tRGT

Rise time (20%–80%)

tRGTR

—

0.75

Fall time (20%–80%)

tRGTF

—

0.75

RX_CLK

RXD[3:0]

tMRDXKH

tMRX

tMRXH

tMRXR

tMRXF

RX_DV

RX_ER

tMRDVKH

Valid Data

Output

Z0 = 50 Ω

NVDD/2

RL = 50 Ω

LVDD/2

MPC8308 Datasheet(PDF) 19 Page - Freescale Semiconductor, Inc

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