DS80PCI810 datasheet(9/60 Pages) TI1

9 / 60 page

DS80PCI810

www.ti.com

SNLS493A – OCTOBER 2014 – REVISED JANUARY 2015

Electrical Characteristics (continued)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

CML RECEIVER INPUTS (IN_n+, IN_n-)

ZRx-DIFF-DC

Rx DC differential mode impedance

Tested at VDD = 2.5 V

100

120

Ω

ZRx-DC

Rx DC single ended impedance

Tested at VDD = 2.5 V

Ω

SDD11 10 MHz

-19

RLRx-DIFF

Rx Differential Input return loss

SDD11 2 GHz

-14

SDD11 6-11.1 GHz

-8

RLRx-CM

Rx Common mode return loss

SCC11 0.05 - 5 GHz

-10

Signal detect assert level for active

SD_TH = F (float),

VRx-ASSERT-DIFF-PP

mVp-p

data signal

1010 pattern at 12 Gbps

VRx-DEASSERT-DIFF- Signal detect de-assert for inactive

SD_TH = F (float),

mVp-p

signal level

1010 pattern at 12 Gbps

HIGH SPEED OUTPUTS

SDD22 10 MHz - 2 GHz

-15

RLTx-DIFF

Tx Differential return loss

SDD22 5.5 GHz

-12

SDD22 11.1 GHz

-10

RLTx-CM

Tx Common mode return loss

SCC22 50 MHz- 2.5 GHz

-8

ZTx-DIFF-DC

DC differential Tx impedance

100

Ω

Total current when output is

ITx-SHORT

Transmitter short circuit current limit

shorted to VDD or GND

VTx-CM-DC-LINE-

Absolute delta of DC common mode

DELTA

voltage between Tx+ and Tx-

Differential measurement with

OUT_n+ and OUT_n-,

AC-Coupled and terminated by

Ω to GND,

VTx-DIFF1-PP

Output Voltage Differential Swing

Inputs AC-Coupled,

615

mVp-p

Measured with 8T Pattern at 12

Gbps(1)

VID = 600 mVp-p

VOD = Level 6(2)(3)

Differential measurement with

OUT_n+ and OUT_n-,

AC-Coupled and terminated by

Ω to GND,

VTx-DIFF2-PP

Output Voltage Differential Swing

Inputs AC-Coupled,

950

mVp-p

Measured with 8T Pattern at 12

Gbps(1)

VID = 1000 mVp-p

VOD = Level 6(2)(3)

Differential measurement with

OUT_n+ and OUT_n-,

AC-Coupled and terminated by

Ω to GND,

VTx-DIFF3-PP

Output Voltage Differential Swing

Inputs AC-Coupled,

1100

mVp-p

Measured with 8T Pattern at 12

Gbps(1)

VID = 1200 mVp-p

VOD = Level 6(2)(3)

(1)

8T pattern is defined as a 1111111100000000'b pattern bit sequence.

(2)

ATE measurements for production are tested at DC.

(3)

In PCIe applications, the output VOD level is not fixed. It adjusts automatically based on the VID input amplitude level. The output VOD

level set by VODA/B[1:0] depends on the VID level and the frequency content. The DS80PCI810 repeater is designed to be transparent

in this mode, so the Tx-FIR (de-emphasis) is passed to the Rx to support the handshake negotiation link training.

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