ADC-FMC User Manual
17
April 24, 2020
SWITCH[1:0] on FPGA main board is used to select reference clock source for ADC Chips. Width
SWITCH[1:0]=0, Si5340B default output 125Mhz is used as reference clock of the ADC Chips.
With SWITCH[1:0]=1, external clock coming from SMA is used. In this case, users need to provide
clock source to the SMA connector. Besides, users have to adjust the SW1 and SW2 on ADC-FMC
board according to voltage range of the external clock source. With SWITCH[1:0]=2, ADC will get
reference the clock which is coming from FPGA PLL.
4
4
.
.
2
2
D
D
e
e
m
m
o
o
o
o
n
n
T
T
R
R
5
5
F
F
P
P
G
G
A
A
M
M
a
a
i
i
n
n
b
b
o
o
a
a
r
r
d
d
This section shows how to setup the demo on the Terasic TR5 FPGA Board. TR5 FMC-A connector
is used to connect the ADC-FMC board in this demo. User also can use FMC-D connector on TR5.
FMC-B and FMC-C on TR5 are not recommended because they are low pin count FPGA
connectors, only two ADC channels can be used.
◼
Hardware Setup
shows the demo setup of ADC-FMC with TR5 mainboard. The ADC-FMC should be
installed on the FMC-A expansion header of the TR5. Adjust the VADJ of MFC-A connector to be
1.8V.
Figure 4-2 Hardware setup of ADC-FMC with TR5
◼
Execute Demonstration
Please follow the procedures below to setup the demonstration:
1.
Power off the TR5.
2.
Make sure the ADC-FMC is installed as shown in
. The signals to be measured
can generate from Analog signal generator. Users can connect the output port of the
Summary of Contents for ADC-FMC
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