Table 3-6 High-Frequency Oscillator and PLL Terminal Functions
SIGNAL |
|
TYPE(1)
|
PULL(2)
|
POWER
GROUP(3)
|
DESCRIPTION |
NAME |
NO. |
CLKOUT / PRU1_R30[13] / GP6[14] |
T18 |
O |
CP[22] |
C |
PLL Observation Clock(4)
|
1.2-V OSCILLATOR
|
OSCIN
|
L19 |
I |
— |
— |
Oscillator input |
OSCOUT
|
K19 |
O |
— |
— |
Oscillator output |
OSCVSS
|
L18 |
GND |
— |
— |
Oscillator ground |
1.2-V PLL0
|
PLL0_VDDA
|
L15 |
PWR |
— |
— |
PLL analog VDD (1.2-V filtered supply) |
PLL0_VSSA
|
M17 |
GND |
— |
— |
PLL analog VSS (for filter) |
1.2-V PLL1
|
PLL1_VDDA
|
N15 |
PWR |
— |
— |
PLL analog VDD (1.2-V filtered supply) |
PLL1_VSSA
|
M15 |
GND |
— |
— |
PLL analog VSS (for filter) |
(1) I = Input, O = Output, I/O = Bidirectional, Z = High impedance, PWR = Supply voltage, GND = Ground, A = Analog signal.
Note: 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. For more detailed information on pullup/pulldown resistors and situations where external pullup/pulldown resistors are required, see the
Device Configuration section. For electrical specifications on pullup and internal pulldown 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.
(4) Note: The CLKOUT clock output is provided as PLL observation clock, and is provided for debug purposes only. It may be routed to a test point, but should never be connected to a load.