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BCM4356XKUBGT Datasheet, PDF (180/195 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
PCI Express Interface Parameters
Table 59: PCI Express Interface Parameters
Parameter
Symbol
Comments
Minimum Typical Maximum Unit
Generala
Baud rate
BPS
–
–
Reference clock peak- Vref
to-peak differential
amplitudeb
LVPECL
0.95
Receiver
Differential termination ZRX-DIFF-DC
Differential termination 80
DC impedance
ZRX-DC
DC common-mode 40
impedance
Powered down
termination (POS)
ZRX-HIGH-IMP-DC- Power-down or RESET 100k
POS
high impedance
Powered down
termination (NEG)
ZRX-HIGH-IMP-DC- Power-down or RESET 1k
NEG
high impedance
Input voltage
VRX-DIFFp-p
AC coupled, differential 175
p-p
Jitter tolerance
TRX-EYE
Minimum receiver eye 0.4
width
Differential return loss RLRX-DIFF
Differential return loss 10
Common-mode return RLRX-CM
loss
Common-mode return 6
loss
Unexpected electrical TRX-IDEL-DET- An unexpected
–
idle enter detect
DIFF-ENTERTIME electrical idle must be
threshold integration
recognized no longer
time
than this time to signal
an unexpected idle
condition.
Signal detect threshold VRX-IDLE-DET-
DIFFp-p
Electrical idle detect 65
threshold
5
–
–
–
100 120
50
60
–
–
–
–
–
–
–
–
–
–
–
–
–
10
–
175
Gbaud
V
Ω
Ω
Ω
Ω
mV
UI
dB
dB
ms
mV
Transmitter
Output voltage
VTX-DIFFp-p
Output voltage rise
time
VTX-RISE
Output voltage fall time VTX-FALL
Differential p-p,
programmable in 16
steps
20% to 80%
80% to 20%
0.8
–
0.125
–
(2.5 GT/s)
0.15
(5 GT/s)
0.125
–
(2.5 GT/s)
0.15
(5 GT/s)
1200
mV
–
UI
–
UI
Broadcom®
May 8, 2015 • 4356-DS103-R
BROADCOM CONFIDENTIAL
Page 179