BCM4339XKWBGT Datasheet, PDF (171/183 Pages) Cypress Semiconductor – Single-Chip 5G WiFi IEEE 802.11ac MAC/Baseband/Radio with Integrated Bluetooth 4.1 and FM Receiver

BCM4339 Preliminary Data Sheet
PCI Express Interface Parameters
Table 61: 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 VTX-CM-DC-LINE- DC offset between D+ 0
common-model
DELTA
and D–
voltage between D+
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) for –
–
dB
0.05:
1.25 GHz
8 (min) for
1.25:
2.5 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
Broadcom^®
November 17, 2014 • 4339-DS106-R
Page 170