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AM1808 Fiches technique(PDF) 31 Page - Texas Instruments |
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AM1808 Fiches technique(HTML) 31 Page - Texas Instruments |
31 / 265 page AM1808 www.ti.com SPRS653B – FEBRUARY 2010 – REVISED APRIL 2011 2.7.9 Enhanced Capture/Auxiliary PWM Modules (eCAP0) The eCAP Module pins function as either input captures or auxiliary PWM 32-bit outputs, depending upon how the eCAP module is programmed. Table 2-11. Enhanced Capture Module (eCAP) Terminal Functions SIGNAL POWER TYPE(1) PULL(2) DESCRIPTION GROUP(3) NAME NO. eCAP0 enhanced capture 0 input or AXR0 / ECAP0_APWM0 / GP8[7] / MII_TXD[0] / CLKS0 F3 I/O CP[6] A auxiliary PWM 0 output eCAP1 enhanced capture 1 input or AXR8 / CLKS1 / ECAP1_APWM1 / GP0[0] / PRU0_R31[8] E4 I/O CP[3] A auxiliary PWM 1 output eCAP2 enhanced capture 2 input or AXR15 / EPWM0TZ[0] / ECAP2_APWM2 / GP0[7] A4 I/O CP[1] A auxiliary PWM 2 output (1) I = Input, O = Output, I/O = Bidirectional, Z = High impedance, PWR = Supply voltage, GND = Ground, A = Analog signal. Note: The pin type shown refers to the input, output or high-impedance state of the pin function when configured as the signal name highlighted in bold. All multiplexed signals may enter a high-impedance state when the configured function is input-only or the configured function supports high-Z operation. All GPIO signals can be used as input or output. For multiplexed pins where functions have different types (ie., input versus output), the table reflects the pin function direction for that particular peripheral. (2) IPD = Internal Pulldown resistor; IPU = Internal Pullup resistor; CP[n] = configurable pull-up/pull-down (where n is the pin group) using the PUPDENA and PUPDSEL registers in the System Module. The pull-up and pull-down control of these pins is not active until the device is out of reset. During reset, all of the pins associated with these registers are pulled down. If the application requires a pull-up, an external pull-up can be used. For electrical specifications on the pull-up and and internal pull-down circuits, see the Device Operating Conditions section. (3) This signal is part of a dual-voltage IO group (A, B or C). These groups can be operated at 3.3V or 1.8V nominal. The three groups can be operated at independent voltages but all pins withina group will operate at the same voltage. Group A operates at the voltage of power supply DVDD3318_A. Group B operates at the voltage of power supply DVDD3318_B. Group C operates at the voltage of power supply DVDD3318_C. Copyright © 2010–2011, Texas Instruments Incorporated Device Overview 31 Submit Documentation Feedback Product Folder Link(s): AM1808 |
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