Cirrus Logic CRD5378, Manual

Page: 46 / 64

CRD5378
46 DS639RD2
3.5.4 Macros
The Macros sub-panel is designed to write a large number of registers with a single command. This al-
lows the target evaluation system to be quickly set into a specific state for testing.
The Register control gives access to both digital filter registers and SPI1 registers. These registers can
be written with data from the Data control, or data can be read and output to a text window. The Register
control can also select special commands to be executed, with the Data control used to define a param-
eter value for the special command, if necessary.
3.5.5 GPIO
The GPIO sub-panel controls the digital filter GPIO pin configurations. GPIO pins have dedicated func-
tions on the target board, but can be used in any manner for custom designs.
Control Description
Write / Read Selects the type of operation to be performed by the inserted macro command.
Register Selects the target register for the inserted macro command. Also selects special
commands that can be performed.
Data Sets the register data value for the inserted macro command. Also sets the parame-
ter value for special commands.
Clear Clears the currently displayed macro.
Load Loads a previously saved macro.
Save Saves the currently displayed macro. Macros can be saved with unique names or
can be saved as
External Macros .
Insert Inserts a macro command at the selected macro line. The macro command is built
from the
Write/Read , Register , and Data controls.
Delete Deletes the macro command at the selected macro line.
Macro1 - Macro4 Selects which of the four working macros is displayed.
Run Runs the currently displayed working macro.
Control Description
Direction Sets the selected GPIO pin as an output (*) or input ( ).
Pull Up Turns the pull up resistor for the selected GPIO pin on (*) or off ( ).
Data Sets the selected output GPIO pin to a high (*) or low ( ) level.
Write Initiates a write to GPIO registers.The Direction , Pull Up and Data controls are read
to determine the register values to be written.
Read Initiates a read from GPIO registers.The Direction , Pull Up and Data controls are
updated based on the register values that are read.