AM1808_11 Datasheet, PDF (39/265 Pages) Texas Instruments – AM1808 ARM Microprocessor

AM1808
www.ti.com
SPRS653B – FEBRUARY 2010 – REVISED APRIL 2011
2.7.17 Universal Serial Bus Modules (USB0, USB1)
Table 2-19. Universal Serial Bus (USB) Terminal Functions
SIGNAL
NAME
TYPE ⁽¹⁾
NO.
PULL ⁽²⁾
POWER
GROUP ⁽³⁾
DESCRIPTION
USB0 2.0 OTG (USB0)
USB0_DM
USB0_DP
USB0_VDDA33
USB0_ID
M18
A
IPD
M19
A
IPD
N18 PWR
—
P16
A
—
—
USB0 PHY data minus
—
USB0 PHY data plus
—
USB0 PHY 3.3-V supply
—
USB0 PHY identification
(mini-A or mini-B plug)
USB0_VBUS
USB0_DRVVBUS
N19
A
—
K18
O
IPD
—
USB0 bus voltage
B
USB0 controller VBUS control output.
AHCLKX / USB_REFCLKIN / UART1_CTS /
GP0[10] / PRU0_R31[17]
A3
I
CP[0]
A
USB_REFCLKIN. Optional clock input
USB0_VDDA18
USB0_VDDA12
USB_CVDD
N14 PWR
—
N17
A
—
M12 PWR
—
—
USB0 PHY 1.8-V supply input
—
USB0 PHY 1.2-V LDO output for bypass cap
—
USB0 and USB1 core logic 1.2-V supply
input
USB1 1.1 OHCI (USB1)
USB1_DM
P18
A
USB1_DP
P19
A
AHCLKX / USB_REFCLKIN / UART1_CTS /
GP0[10] / PRU0_R31[17]
A3
I
—
—
CP[0]
—
USB1 PHY data minus
—
USB1 PHY data plus
A
USB_REFCLKIN. Optional clock input
USB1_VDDA33
USB1_VDDA18
USB_CVDD
P15 PWR
—
P14 PWR
—
M12 PWR
—
—
USB1 PHY 3.3-V supply
—
USB1 PHY 1.8-V supply
—
USB0 and USB1 core logic 1.2-V supply
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.
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