PD720201 datasheet(22/43 Pages) RENESAS

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μPD720201/μPD720202

3. ELECTRICAL SPECIFICATIONS

R19DS0047EJ0500 Rev. 5.00

Page 22 of 40

Jan. 17, 2013

3.8.5

PCI Express Interface – Differential Transmitter (TX) Specifications

(Refer to PCI Express Base Specification Revision 2.0 for more information)

Table 3-15.

PCI Express Interface – Differential Transmitter (TX) Specifications

(1/2)

Parameter

Symbol

2.5GT/s

5.0GT/S.

Units

Unit Interval

399.88(min)

400.12(max)

199.94(min)

200.06(max)

Differential Peak to Peak(p-p) Tx

voltage swing

TX-DIFFp-p

0.8(min)

1.2(max)

0.8(min)

1.2(max)

Tx de-emphasis level ratio

TX-DE-RATIO-3.5dB

3.0(min)

4.0(max)

3.0(min)

4.0(max)

Tx de-emphasis level ratio

TX-DE-RATIO-6dB

Not specified

5.5(min)

6.5(max)

Instantaneous lone pulse width

MIN-PULSE

Not specified

0.9(min)

Transmitter Eye including all jitter

sources

TX-EYE

0.75(min)

Maximum time between the jitter

median and max deviation from the

median

TX-EYE-MEDIAN-to-

MAX-JITTER

0.125(max)

Not specified

Tx deterministic jitter >1.5MHz

TX-HF-DJ-DD

Not specified

0.15(max)

Tx RMS jitter > 1.5MHz

TX-LF-RMS

Not specified

3.0

RMS

Transmitter rise and fall time

TX-RISE-FALL

0.125(min)

0.15(max)

Tx rise/fall mismatch

RF-MISMATCH

Not specified

0.1(max)

Maximum Tx PLL bandwidth

WTX-PLL

22(max)

16(max)

MHz

Minimum Tx PLL BW for 3dB peaking

WTX-PLL-LO-3DB

1.5(min)

8(min)

MHz

Minimum Tx PLL BW for 1dB peaking

WTX-PLL-LO-1DB

Not specified

5(min)

MHz

Tx PLL peaking with 8MHz min BW

KGTX-PLL1

Not specified

3.0(max)

Tx PLL peaking with 5MHz min BW

KGTX-PLL2

Not specified

1.0(max)

Tx package plus Si differential return

loss

LTX-DIFF

10(min)

10(min) for 0.05 –

1.25GHz

8(min) for 1.25 –

2.5GHz

Tx package plus Si common mode

return loss

LTX-CM

6(min)

DC differential Tx impedance

TX-DIFF-DC

80(min)

120(max)

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