MPC8313E datasheet(32/92 Pages) FREESCALE

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MPC8313E PowerQUICC™ II Pro Processor Hardware Specifications, Rev. 1

Freescale Semiconductor

Ethernet: Three-Speed Ethernet, MII Management

Figure 16 shows the MII management AC timing diagram.

Figure 16. MII Management Interface Timing Diagram

8.4.3

SGMII DC Electrical Characteristics

The SGMII Solution in the MPC8313 is designed for use in a 4-wire, AC-Coupled SGMII link. Table 34

andTable 35describe the SGMII AC-Coupled DC electrical characteristics. Transmitter characteristics are

measured at the transmitter outputs, SD_TX and SD_TX_B, as depicted in Figure 17.

Table 34. DC Transmitter Electrical Characteristics

Parameter

Symbol

Min

Max

Unit

Notes

Output high voltage

VOH

—0.7*XPADVDD1

Does not align to

DC-coupled

SGMII

Output low voltage

VOL

0.3*XPADVDD

—

Output ringing

VRING

—10

—

Output differential voltage

|VOD|

(XPADVDD/2)/1.7

(XPADVDD/2)/1.3

—

Output offset voltage

VOS

(XPADVDD/2) – 50 mV (XPADVDD/2) + 50 mV

Does not align to

DC-coupled

SGMII

Output impedance (single ended)

—

Mismatch in a pair

ΔRO

—10

—

Change in VOD between “0” and “1”

Δ|VOD|—

—

Change in VOS between “0” and “1”

Δ VOS

—25

—

Output current on short to GND

ISA, ISB

—40

—

1 XPADVDDrefers to the SGMII transmitter output supply voltage.

MDC

tMDDXKH

tMDC

tMDCH

tMDCR

tMDCF

tMDDVKH

tMDKHDX

MDIO

(Input)

(Output)

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