TSI721 datasheet(35/67 Pages) RENESAS

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Tsi721 Datasheet

April 4, 2016

Integrated Device Technology

TTX-HF-DJ-DD

Tx deterministic jitter >

1.5 MHz

Not specified

0.15

Deterministic jitter only. See Notes 2 and

10.

TTX-LF-RMS

TX RMS jitter < 1.5 MHz

Not specified

3.0

RMS

Total energy measured over a 10 kHz -

1.5 MHz range

TTX-RISE-FALL

Transmitter rise and fall

time

0.125

0.15

Measured differentially from 20% to

80% of swing. See Note 2 and Figure

4-28 of PCI Express Base Specification

(Rev. 2.1)

TRF-MISMATCH

Tx rise/fall mismatch

Not specified

0.1

Measured from 20% to 80%

differentially. See Note 2.

BWTX-PLL

Maximum Tx PLL

bandwidth

MHz

Second order PLL jitter transfer

bounding function. See Note 6.

BWTX-PLL-LO-3DB Minimum Tx PLL BW for

3dB peaking

1.5

MHz

Second order PLL jitter transfer

bounding function. See Notes 6 and 8.

BWTX-PLL-LO-1DB Minimum Tx PLL BW for

1dB peaking

Not specified

MHz

Second order PLL jitter transfer

bounding function. See Notes 6 and 8.

PKGTX-PLL1

Tx PLL peaking with

8MHz BW

Not specified

3.0

See Note 8.

PKGTX-PLL2

Tx PLL peaking with

5MHz BW

Not specified

1.0

See Note 8.

RLTX-DIFF

Tx package plus Si

differential return loss

10 for

0.05-1.25

GHz

8 for

1.25-2.5

GHz

For more information, refer to Figure

4-34 of PCI Express Base Specification

(Rev. 2.1)

RLTX-CM

Tx package plus Si

common mode return loss

Measured over 0.05 - 1.25 GHz range

for 2.5 Gbps and 0.05 - 2.5 GHz range

for 5.0 Gbps (S11 parameter)

ZTX-DIFF-DC

DC differential Tx

impedance

120

Low impedance defined during

signaling. Parameter is captured for 5.0

GHz by RLTX-DIFF.

VTX-CM-AC-PP

Tx AC common mode

voltage (5.0 Gbps)

Not specified

100

See Note 5.

VTX-CM-AC-P

TX AC common mode

voltage (2.5 Gbps)

Not specified

See Note 5.

Table 19: PCIe Differential Transmitter Specifications (Continued)

Symbol

Parameter

2.5 Gbps

5.0 Gbps

Unit

Notes

Min.

Max.

Min.

Max.

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