Intel IXF1104 manual Undershoot / Overshoot Specifications, Rgmii Electrical Characteristics

Intel® IXF1104 4-Port Gigabit Ethernet Media Access Controller

Table 42. SerDes Transmit Characteristics (Sheet 2 of 2)

		Normalized
Parameter	Symbol	Power	Min	Typ	Max	Units	Comments
		Drive
		Settings1
Receiver common	RxCMV	–	900	1275	1650	mV	–
mode voltage range
Receiver termination	RxZ	–	40	51	62.5	Ω	–
impedance
Signal detect level	RxSigDet	–	50	125	200	mVp-pdiff	–

1. Refer to Section 5.6.2.2, “Transmitter Programmable Driver-Power Levels” on page 104.

Table 43. SerDes Receive Characteristics

		Normalized
Parameter	Symbol	Power	Min	Typ	Max	Units	Comments
		Drive
		Settings
Receiver differential
voltage requirement at	RxDiffV	–	200	–	–	mVp-p diff	–
center of receive eye
Receiver common	RxCMV	–	900	1275	1650	mV	–
mode voltage range
Receiver termination	RxZ	–	40	51	62.5	Ω	–
impedance
Signal detect level	RxSigDet	–	50	125	200	mVp-pdiff	–

7.1.1Undershoot / Overshoot Specifications

The overshoot figures given in this section represent the maximum voltage that can be applied without affecting the reliability of the device (see Table 44).

Caution: If these limits are exceeded, damage to the device will occur.

Table 44. Undershoot / Overshoot Limits

	Pin Type	Undershoot	Overshoot
2.5	V CMOS	-0.60 V	3.9 V
3.3	V LVTTL	-0.60 V	3.9 V

7.1.2RGMII Electrical Characteristics

The RGMII signals (including MDIO/MDC) are based on 2.5V CMOS interface voltages, as defined by JEDEC EIA/JESD8-5 (see Table 45).

135 Datasheet

Document Number: 278757

Revision Number: 009

Revision Date: 27-Oct-2005