Altera Nios II, Hardware Development Manual

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1–18 Chapter 1: Nios II Hardware Development
Creating the Design Example
Nios II Hardware Development Tutorial May 2011 Altera Corporation
7. Connect the
clk_reset
port of the clk_0 clock source to the
reset
port of the JTAG
UART.
8. Connect the
data_master
port of the Nios II processor to the
avalan_jtag_slave
port of the JTAG UART.
1
The
instruction_master
port of the Nios II processor does not connect to the JTAG
UART because the JTAG UART is not a memory device and cannot send instructions
to the Nios II processor.
f
For more information about the JTAG UART, refer to the JTAG UART Core chapter in
the Embedded Peripherals IP User Guide .
Add the Interval Timer
Most control systems use a timer component to enable precise calculation of time. To
provide a periodic system clock tick, the Nios II HAL requires a timer.
Perform the following steps to add the timer:
1. On the Component Library tab, expand Peripherals , expand Microcontroller
Peripherals , and then click Interval Timer .
2. Click
Add
. The Interval Timer parameter editor appears. Figure 1–9 shows the
GUI.
3. In the Presets list, select Full-featured .
1
Do not change any of the other default settings.