AM1707BZKB4 datasheet(25/199 Pages) TI

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AM1707

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SPRS637A – FEBRUARY 2010 – REVISED APRIL 2010

3.6.11 Universal Asynchronous Receiver/Transmitters (UART0, UART1, UART2)

Table 3-13. Universal Asynchronous Receiver/Transmitter (UART) Terminal Functions

No.

SIGNAL NAME

TYPE(1)

PULL(2)

MUXED

DESCRIPTION

ZKB

UART0

I2C0, BOOT,

UART0_RXD/I2C0_SDA/TM64P0_IN12/GP5[8]/BOOT[8]

IPU

UART0 receive data.

Timer0, GPIO,

I2C0, Timer0, GPIO, UART0 transmit

UART0_TXD/I2C0_SCL/TM64P0_OUT12/GP5[9]/BOOT[9]

IPU

BOOT

data.

UART0

SPI0_SCS[0]/ UART0_RTS /EQEP0B/GP5[4]/BOOT[4]

IPU

ready-to-send output

SPIO, eQEP0,

GPIO, BOOT

UART0

SPI0_ENA/ UART0_CTS /EQEP0A/GP5[3]/BOOT[3]

IPU

clear-to-send input

UART1

UART1_RXD/AXR0[9]/GP3[9](3)

IPD

UART1 receive data.

McASP0, GPIO

UART1 transmit

UART1_TXD/AXR0[10]/GP3[10](3)

IPD

data.

UART2

SPI1_ENA/UART2_RXD/GP5[12]

IPU

UART2 receive data.

SPI1, GPIO

UART2 transmit

SPI1_SCS[0]/UART2_TXD/GP5[13]

IPU

data.

(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 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

(3)

As these signals are internally pulled down while the device is in reset, it is necessary to externally pull them high with resistors if

UART1 boot mode is used.

3.6.12 Inter-Integrated Circuit Modules(I2C0, I2C1)

Table 3-14. Inter-Integrated Circuit (I2C) Terminal Functions

No.

SIGNAL NAME

TYPE(1)

PULL(2)

MUXED

DESCRIPTION

ZKB

I2C0

UART0, Timer0,

UART0_RXD/I2C0_SDA/TM64P0_IN12/GP5[8]/BOOT[8]

I/O

IPU

I2C0 serial data.

GPIO, BOOT

UART0, Timer0,

UART0_TXD/I2C0_SCL/TM64P0_OUT12/GP5[9]/BOOT[9]

I/O

IPU

I2C0 serial clock.

GPIO, BOOT

I2C1

SPI1_SIMO[0]/I2C1_SDA/GP5[6]/BOOT[6]

I/O

IPU

I2C1 serial data.

SPI1, GPIO, BOOT

SPI1_SOMI[0]/I2C1_SCL/GP5[5]/BOOT[5]

I/O

IPU

I2C1 serial clock.

(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 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

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