AM1802 Datasheet, PDF (24/180 Pages) Texas Instruments – AM1802 ARM Microprocessor

AM1802
SPRS710C – NOVEMBER 2010 – REVISED MARCH 2012
www.ti.com
2.7.9 Universal Asynchronous Receiver/Transmitters (UART0, UART1, UART2)
Table 2-11. Universal Asynchronous Receiver/Transmitter (UART) Terminal Functions
SIGNAL
NAME
TYPE ⁽¹⁾
NO.
PULL ⁽²⁾
POWER
GROUP ⁽³⁾
DESCRIPTION
UART0
SPI0_SCS[5] / UART0_RXD / GP8[4] / MII_RXD[3]
C19
I
CP[8]
A
UART0 receive data
SPI0_SCS[4] / UART0_TXD / GP8[3] / MII_RXD[2]
D18
O
CP[8]
A
UART0 transmit data
SPI0_SCS[2] / UART0_RTS / GP8[1]
D16
O
CP[9]
A
UART0 ready-to-send output
SPI0_SCS[3] / UART0_CTS / GP8[2]
E17
I
CP[9]
A
UART0 clear-to-send input
UART1
SPI1_SCS[3] / UART1_RXD / GP1[1]
E18
I
CP[13]
A
UART1 receive data
SPI1_SCS[2] / UART1_TXD / GP1[0]
F19
O
CP[13]
A
UART1 transmit data
AHCLKR / UART1_RTS / GP0[11]
A2
O
CP[0]
A
UART1 ready-to-send output
AHCLKX / USB_REFCLKIN / UART1_CTS / GP0[10]
A3
I
CP[0]
A
UART1 clear-to-send input
UART2
SPI1_SCS[5] / UART2_RXD / GP1[3]
F17
I
CP[12]
A
UART2 receive data
SPI1_SCS[4] / UART2_TXD / GP1[2]
F16
O
CP[12]
A
UART2 transmit data
AMUTE / UART2_RTS / GP0[9]
D5
O
CP[0]
A
UART2 ready-to-send output
RTC_ALARM / UART2_CTS / GP0[8] / DEEPSLEEP
F4
I
CP[0]
A
UART2 clear-to-send input
(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.
24
Device Overview
Submit Documentation Feedback
Product Folder Link(s): AM1802
Copyright © 2010–2012, Texas Instruments Incorporated