SPI Master Communications
SPI BIT RATE
Select the desired SPI bit rate by selecting the radio button for the desired range and
then selecting the bit rate using the slider.
FIGURE 5-2:
SPI CONFIGURE COMMUNICATIONS MODE – ADVANCED
VIEW
EVENT MARKERS
?
?
?
?
?
?
?
?
?
?
Abrt Mac Exe – Enable event marker: abort ‘macro’ execution
Macro Loop – Enable event marker: top of ‘macro’ loop
Mac Lp 65536 – Enable event marker: ‘macro’ loop count overflow (i.e., 65536)
Mac Lp Done – Enable event marker: ‘macro’ loop iterations complete
Timeout Timer1 – Enable event marker: Timer1 expired
Timeout Timer2 – Enable event marker: Timer2 expired
Status Error – Enable event marker: change in status byte
Write Byte – Enable event marker – write byte
Read Byte – Enable event marker – read byte
Status Err – Enable event marker – change in SPI status byte
ADVANCED OPTIONS
? Disable LED2 Default – Disable default LED2 behavior (LED2 = Yellow ‘Target’
LED)
? Disable LED1 Default – Disable default LED1 behavior (LED1 = Red ‘Busy’ LED)
? Enable Switch Test – Enable low level switch test:
- Switch Off (not depressed) – blink LED1, LED2 off
- Switch ON (depressed) – blink LED2, LED1 off
? Sample Phase – SPI transaction configuration: Sample phase
? Clock Edge Select – SPI transaction configuration: Clock Edge
? Clock Polarity – SPI transaction configuration: Clock Polarity
? Auto Output Disable – Disables output during input. Allows the SDI lines and the
SDO lines to be shorted for 3-wire communication.
? 2007 Microchip Technology Inc.
DS51647A-page 39
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