Datasheet

PICkit™ Serial Analyzer User’s Guide
DS51647C-page 56 © 2009 Microchip Technology Inc.
• Auto Output Disable – Disables output during input. Allows the SDI lines and the
SDO lines to be shorted for 3-wire communication.
• Chip Select Polarity – Set chip polarity – active-high or active-low.
7.6 COMMUNICATIONS: BASIC OPERATIONS
The SPI Basic Operations window can be opened by selecting:
• Communications: Basic Operations
from the tool bar, or
• B
asic Operations from the menu bar
The SPI Basic Operations window is shown in Figure 7-3. The Basic Operations
window is organized into five columns. Individual columns are enabled by clicking on
the Enable check box.
The Send button indicates that the column boxes are used to enter data bytes that will
be transmitted to the target device. Clicking on the Send button toggles the column
mode to Rcv (Receive) and the number of received bytes is entered as shown in
Figure 7-4.
Clicking on the Execute button will execute the enabled columns in order from left to
right.
The Clear button clears all boxes.
The commands will be logged in the Transactions window. A listing of the command
abbreviations is given in Table 7-2.
FIGURE 7-3: SPI BASIC OPERATIONS
Note: The “x” indicates the value is a hexadecimal number. Clicking on “x” will
toggle it to a “d” indicating that the value is a decimal number.