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DSP56F805 Datasheet(PDF) 11 Page - Motorola, Inc |
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DSP56F805 Datasheet(HTML) 11 Page - Motorola, Inc |
11 / 48 page GPIO Signals 56F805 Technical Data 11 2.6 GPIO Signals 2.7 Pulse Width Modulator (PWM) Signals 1 RSTO Output Output Reset Output—This output reflects the internal reset state of the chip. 1 EXTBOOT Input (Schmitt) Input External Boot—This input is tied to VDD to force device to boot from off-chip memory. Otherwise, it is tied to VSS. Table 11. Dedicated General Purpose Input/Output (GPIO) Signals No. of Pins Signal Name Signal Type State During Reset Signal Description 8 GPIOB0– GPIOB7 Input or Output Input Port B GPIO—These eight dedicated General Purpose I/O (GPIO) pins can be individually programmed as input or output pins. After reset, the default state is GPIO input. 6 GPIOD0– GPIOD5 Input or Output Input Port D GPIO—These six dedicated General Purpose I/O (GPIO) pins can be individually programmed as input or output pins. After reset, the default state is GPIO input. Table 12. Pulse Width Modulator (PWMA and PWMB) Signals No. of Pins Signal Name Signal Type State During Reset Signal Description 6 PWMA0–5 Output Tri- stated PWMA0–5—These are six PWMA output pins. 3 ISA0–2 Input (Schmitt) Input ISA0–2—These three input current status pins are used for top/bottom pulse width correction in complementary channel operation for PWMA. 4 FAULTA0–3 Input (Schmitt) Input FAULTA0–3—These four Fault input pins are used for disabling selected PWMA outputs in cases where fault conditions originate off-chip. 6 PWMB0–5 Output Output PWMB0–5—These are six PWMB output pins. 3 ISB0–2 Input (Schmitt) Input ISB0–2— These three input current status pins are used for top/bottom pulse width correction in complementary channel operation for PWMB. 4 FAULTB0–3 Input (Schmitt) Input FAULTB0–3—These four Fault input pins are used for disabling selected PWMB outputs in cases where fault conditions originate off-chip. Table 10. Interrupt and Program Control Signals (Continued) No. of Pins Signal Name Signal Type State During Reset Signal Description Freescale Semiconductor, Inc. For More Information On This Product, Go to: www.freescale.com |
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