AM1808AZCED3 datasheet(38/264 Pages) TI

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AM1808

SPRS653A – FEBRUARY 2010 – REVISED APRIL 2010

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3.7.14 Timers

Table 3-16. Timers Terminal Functions

SIGNAL

POWER

TYPE(1)

PULL(2)

DESCRIPTION

GROUP(3)

NAME

NO.

TIMER0

SPI0_SCS[1] /TM64P0_OUT12 / GP1[7] / MDIO_CLK / TM64P0_IN12

E16

CP[10]

Timer0 lower input.

Timer0 lower

SPI0_SCS[1] / TM64P0_OUT12 / GP1[7] / MDIO_CLK / TM64P0_IN12

E16

CP[10]

output

TIMER1 (Watchdog)

SPI0_SCS[0] /TM64P1_OUT12 / GP1[6] / MDIO_D / TM64P1_IN12

D17

CP[10]

Timer1 lower input.

Timer1 lower

SPI0_SCS[0] / TM64P1_OUT12 / GP1[6] / MDIO_D /TM64P1_IN12

D17

CP[10]

output

TIMER2

SPI1_SCS[1] / EPWM1A / PRU0_R30[7] / GP2[15] / TM64P2_IN12

F18

CP[14]

Timer2 lower input.

Timer2 lower

SPI1_SCS[7] / I2C0_SCL / TM64P2_OUT12 / GP1[5]

G16

CP[11]

output

TIMER3

SPI1_SCS[0] / EPWM1B / PRU0_R30[8] / GP2[14] / TM64P3_IN12

E19

CP[14]

Timer3 lower input.

Timer3 lower

SPI1_SCS[6] / I2C0_SDA / TM64P3_OUT12 / GP1[4]

G18

CP[11]

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 weakly pulled down. If the application requires a

pull-up, an external pull-up can be used.

(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.

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