BCM4356XKUBGT Datasheet, PDF (181/195 Pages) Cypress Semiconductor – Single-Chip 5G WiFi IEEE 802.11ac 2×2 MAC/ Baseband/Radio with Integrated Bluetooth 4.1, FM Receiver, and Wireless Charging

BCM4356 Advance Data Sheet
PCI Express Interface Parameters
Table 59: PCI Express Interface Parameters (Cont.)
Parameter
Symbol
Comments
Minimum Typical Maximum Unit
RX detection voltage VTX-RCV-DETECT The amount of voltage –
swing
change allowed during
receiver detection.
TX AC peak common- VTX-CM-AC-PP
mode voltage
(5 GT/s)
TX AC common mode –
voltage (5 GT/s)
TX AC peak common- VTX-CM-AC-P
mode voltage
(2.5 GT/s)
TX AC common mode –
voltage (2.5 GT/s)
Absolute delta of DC VTX-CM-DC-
common-model
ACTIVE-IDLE-
voltage during L0 and DELTA
electrical idle
Absolute delta of DC 0
common-model voltage
during L0 and electrical
idle.
–
600
mV
–
100
mV
–
20
mV
–
100
mV
Absolute delta of DC
common-model
voltage between D+
and D-
VTX-CM-DC-LINE- DC offset between D+ 0
DELTA
and D-
–
25
mV
Electrical idle
VTX-IDLE-DIFF-AC- Peak-to-peak voltage 0
differential peak output p
voltage
–
20
mV
TX short circuit
current
ITX-SHORT
Current limit when TX –
output is shorted to
ground.
–
90
mA
DC differential TX
termination
ZTX-DIFF-DC
Low impedance defined 80
during signaling
(parameter is captured
for 5.0 GHz by RLTX-
DIFF)
–
120
Ω
Differential
return loss
RLTX-DIFF
Differential
return loss
10 (min.) –
–
dB
for 0.05:
1.25 GHz
Common-mode
return loss
RLTX-CM
Common-mode return 6
loss
–
–
dB
TX eye width
TTX-EYE
Minimum TX
eye width
0.75
–
–
UI
a. For out-of-band PCIe signal specifications, refer to Table 32: “Recommended Operating Conditions and DC
Characteristics,” on page 128.
b. The reference clock inputs comply with the requirements of the PCI Express CEM v2.0 Specification (see
Reference [3] on page 15).
Broadcom^®
May 8, 2015 • 4356-DS103-R
BROADCOM CONFIDENTIAL
Page 180