BCM4354 datasheet(179/192 Pages) CYPRESS

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PCI Express Interface Parameters

BCM4354 Data Sheet

BROADCOM CONFIDENTIAL

Broadcom®

October 15, 2014 • 4354-DS109-R

Page 178

RX detection voltage

swing

VTX-RCV-DETECT The amount of voltage

change allowed during

receiver detection.

––

600

TX AC peak common-

mode voltage

(5 GT/s)

VTX-CM-AC-PP

TX AC common mode

voltage (5 GT/s)

––

100

TX AC peak common-

mode voltage

(2.5 GT/s)

VTX-CM-AC-P

TX AC common mode

voltage (2.5 GT/s)

––

Absolute delta of DC

common-model

voltage during L0 and

electrical idle

VTX-CM-DC-

ACTIVE-IDLE-

DELTA

Absolute delta of DC

common-model voltage

during L0 and electrical

idle.

0–

100

Absolute delta of DC

common-model

voltage between D+

and D-

VTX-CM-DC-LINE-

DELTA

DC offset between D+

and D-

0–

Electrical idle

differential peak output

voltage

VTX-IDLE-DIFF-AC-

Peak-to-peak voltage

–

TX short circuit

current

ITX-SHORT

Current limit when TX

output is shorted to

ground.

––

DC differential TX

termination

ZTX-DIFF-DC

Low impedance defined

during signaling

(parameter is captured

for 5.0 GHz by RLTX-

DIFF)

–

120

Ω

Differential

return loss

RLTX-DIFF

Differential

return loss

10 (min.)

for 0.05:

1.25 GHz

––

Common-mode

return loss

RLTX-CM

Common-mode return

loss

6–

–

TX eye width

TTX-EYE

Minimum TX

eye width

0.75

–

Table 60: PCI Express Interface Parameters (Cont.)

Parameter

Symbol

Comments

Minimum

Typical Maximum Unit

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