MPC8313E datasheet(32/88 Pages) FREESCALE

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MPC8313E PowerQUICC™ II Pro Processor Hardware Specifications, Rev. 0

Freescale Semiconductor

Ethernet: Three-Speed Ethernet, MII Management

8.3.3

SGMII DC Electrical Characteristics

The SGMII Solution in the MPC8313 is designed to be used in a 4-wire AC-Coupled SGMII link. Table 32

andTable 33describe 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 15.

Figure 15. Transmitter Reference Circuit

Table 32. DC Transmitter Electrical Characteristics

Parameter

Symbol

Min

Max

Unit

Notes

Output high voltage

VOH

0.7*XPADVDD1

Will not align to

DC-coupled

SGMII

Output low voltage

VOL

0.3*XPADVDD

Output ringing

VRING

Output differential voltage

|VOD|

(XPADVDD/2)/1.7

(XPADVDD/2)/1.3

Output offset voltage

VOS

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

Will not align to

DC-coupled

SGMII

Output impedance

(single ended)

Mismatch in a pair

ΔRO

Change in VOD between “0” and “1”

Δ|VOD|25

Change in VOS between “0” and “1”

Δ VOS

Output current on short to GND

ISA, ISB

1 XPADVDDrefers to the SGMII transmitter output supply voltage.

100 ohms

SD_TX_B

SD_TX

Transmitter

MPC8313E Datasheet(PDF) 32 Page - Freescale Semiconductor, Inc

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