User's Manual

COMPANY CONFIDENTIAL
Preliminary Datasheet
24
6.Schematic Reference Design
Following is the evaluation board schematics of M.2 1216 BCM4356 module for reference.
 Low Power Clock
The BCM4356 module uses a secondary low frequency clock for low power mode timing. A precision
external 32.768 KHz clock that meets the specifications listed in Table 3 is required by BCM4356.
Table 3: External 32.768K Low Power Oscillator Specifications
Parameter
Conditions/
Notes
Specification
Units
Min
Typ
Max
Nominal
Input Frequency
32.768
-
KHz
Frequency Accuracy
-200
+200
ppm
Input signal amplitude
+0.2
+1.8
V, p-p
Duty cycle
Square waveor
sine- wave
30
-
70
%
Clock jitter
300Hz-15KHz
-
5
ns
Clock jitter
During initial
start-up
10,000
ppm