Lattice Semiconductor ispMACH 4000ZE Pico, Руководство пользователя

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ispMACH 4000ZE Pico Development Kit
Lattice Semiconductor User’s Guide
PicoView Window
The PicoView window provides access to control and status registers and a series or read or write actions that can
be issued by the I
2
C bus master module emulated by PicoView.
Figure 7. PicoView Window
Table 3. PicoView Window Buttons and Command Descriptions
Control Buttons Button or I
2
C Master Command Description
I
2
C Address (ispMACH 4256ZE)
Open the PicoView Hex Entry dialog. Specify the hexadecimal value of the LC4256ZE
CPLD I
2
C bus address.
Control Register [R|W]
Open the PicoView Control Register dialog.
R – Read the current control register value and update the Control Register button display.
W – Write the current control register commands to the I
2
C slave peripherals.
Counter Register [R|W]
Open the PicoView Hex Entry dialog.
R – Read the counter value from the CPLD and update the Counter Register button dis-
play.
W – Write the counter pre-load value to the CPLD. The counter will begin counting up or
down from the preload value if it is not held in the Stop state. For more information about
counter controls, see the Pico View Control Register dialog.
Shift Register [R|W]
Open the PicoView Shift Register dialog.
R – Read the 21-bit shift register value from the CPLD and update the Shift Register but-
ton display.
W – Write the shift register pre-load value to the right-most 7-segment digit of the CPLD.
The shift register will shift the pattern left or right from the pre-load value if it is not held in
the Stop state. For more information about shift register controls, see the Pico View Con-
trol Register dialog.
General Purpose I/O
Open the PicoView General Purpose I/O Register
R – Read the 8-bit register value from the CPLD prototype GPIOs connected to the 15x2
expansion header landing.
W – Write the 8-bit register value specified to the CPLD prototype GPIOs.
POWR6AT6 Register
Display the current or voltage monitored by the POWR6AT6.
W – Issue a write command to display the POWR6AT6 register value to the LCD panel of
the Pico board.
DIP Switch
Display the value of the 4-bit DIP switch input as a hexadecimal value.

R – Read the DIP switch input.