3 Development Board Circuit
3.4 Clock, Reset
DBUG361-1.2E
17(30)
Signal Name
Pin No.
BANK
Description
I/O Level
VCCO2
37, 55
2
I/O Bank
Voltage
2.5V/1.2V
VCCO3
9, 19
3
I/O Bank
Voltage
1.8V
VCCX
31, 77
-
Auxiliary
voltage
2.5V
VCC
1, 36, 73, 108
-
Core voltage
1.2V
VSS
2, 17, 33, 35, 53,
74, 89, 105, 107
-
GND
-
3.4
Clock, Reset
3.4.1
Overview
The development board provides a 50MHz crystal oscillator connected
to the PLL input pin. This can be employed as the input clock for the PLL in
FPGA. Frequency division and multiplication of PLL can output the clock
required by the user.
3.4.2
Clock, Reset
Figure3-5 Clock, Reset
106
90
KEY5
ADM811
3.3V
FPGA_RST_N
FPGA_CLK
U1
U2
X2
GW1NR-
LV9LQ144P
3.4.3
Pins Distribution
Table 3-5 FPGA Clock and Reset Pins Distribution
Signal Name
Pin No.
BANK
Description
I/O Level
FPGA_CLK
106
1
50MHz Crystal
Oscillator Input
2.5V
FPGA_RST_N
90
1
Reset Signal, Active
Low
2.5V
Содержание DK-START-GW1NR9
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