External Interrupts; Reset; Schematic Diagram Of The User Interrupt Interface; Schematic Diagram Of The Reset Interface - Motorola DSP56F803 Hardware User Manual

2.8 External Interrupts

Two on-board push-button switches are provided for external interrupt generation, as
shown in Figure 2-6. S2 allows the user to generate a hardware interrupt for signal line
IRQA. S3 allows the user to generate a hardware interrupt for signal line IRQB. These two
switches allow the user to generate interrupts for his user-specific programs.
Figure 2-6. Schematic Diagram of the User Interrupt Interface

2.9 Reset

Logic is provided in the DSP56F803 to generate a clean power-on RESET signal.
Additional, reset logic is provided to support the RESET signals from the JTAG
connector, the Parallel JTAG Interface and the user RESET push-button; see
Figure 2-7. Schematic Diagram of the RESET Interface
2-10
+3.3V
IRQA
+3.3V
IRQB
RESET
PUSHBUTTON
MANUAL RESET
P_RESET
DSP56F803EVM Hardware User's Manual
DSP56F803
IRQA
IRQB
+3.3V
RESET
Figure 2-7.