P0071 Terasic Technologies Inc, P0071 Datasheet - Page 39
![no-image](/images/manufacturer_photos/0/6/659/terasic_technologies_inc_sml.jpg)
P0071
Manufacturer Part Number
P0071
Description
TPAD MULTIMEDIADEVELOPMENT KIT
Manufacturer
Terasic Technologies Inc
Series
tPAD, Cyclone®IVr
Specifications of P0071
Main Purpose
Reference Design, Tablet
Embedded
Yes, FPGA / CPLD
Utilized Ic / Part
EP4CE115
Primary Attributes
8-Inch TFT LCD, LED Backlight
Secondary Attributes
5-Megapixel Digital Image Sensor
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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HEX7[2]
HEX7[3]
HEX7[4]
HEX7[5]
HEX7[6]
4
The DE2-115 board includes one oscillator that produces 50 MHz clock signal. A clock buffer is
used to distribute 50 MHz clock signal with low jitter to FPGA. The distributing clock signals are
connected to the FPGA that are used for clocking the user logic. The board also includes two SMA
connectors which can be used to connect an external clock source to the board or to drive a clock
signal out through the SMA connector. In addition, all these clock inputs are connected to the phase
locked loops (PLL) clock input pins of the FPGA to allow users to use these clocks as a source
clock for the PLL circuit.
The clock distribution on the DE2-115 board is shown in
assignments for clock inputs to FPGA I/O pins are listed in
Signal Name
CLOCK_50
CLOCK2_50
CLOCK3_50
SMA_CLKOUT
SMA_CLKIN
4
.
.
5
5
C
C
l
l
o
o
c
c
k
k
C
C
i
i
r
r
PIN_AG17
PIN_AH17
PIN_AF17
PIN_AG18
PIN_AA14
c
FPGA Pin No.
PIN_Y2
PIN_AG14
PIN_AG15
PIN_AE23
PIN_AH14
c
u
Figure 4-11 Block diagram of the clock distribution
u
Table 4-5 Pin Assignments for Clock Inputs
i
i
t
t
r
r
y
y
Seven Segment Digit 7[2]
Seven Segment Digit 7[3]
Seven Segment Digit 7[4]
Seven Segment Digit 7[5]
Seven Segment Digit 7[6]
Description
50 MHz clock input
50 MHz clock input
50 MHz clock input
External (SMA) clock output
External (SMA) clock input
38
Table
Figure
4-5.
Depending on JP6
Depending on JP6
Depending on JP6
Depending on JP6
3.3V
4-11. The associated pin
I/O Standard
3.3V
3.3V
Depending on JP6
Depending on JP6
3.3V
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