Texas Instruments AM1808 User Manual page 19

www.ti.com
3.7.2 High-Frequency Oscillator and PLL
Table 3-4. High-Frequency Oscillator and PLL Terminal Functions
SIGNAL
NAME
CLKOUT / UHPI_HDS2 /
PRU1_R30[13] / GP6[14]
OSCIN
OSCOUT
OSCVSS
PLL0_VDDA
PLL0_VSSA
PLL1_VDDA
PLL1_VSSA
(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
internal pulldown circuits, see the
(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.
Copyright © 2010–2014, Texas Instruments Incorporated
(1) (2)
TYPE PULL
NO.
T18 O CP[22]
1.2-V OSCILLATOR
L19 I —
K19 O —
L18 GND —
1.2-V PLL0
L15 PWR —
M17 GND —
1.2-V PLL1
N15 PWR —
M15 GND —
Device Configuration
Device Operating Conditions section.
Submit Documentation Feedback
Product Folder Links:
SPRS653E – FEBRUARY 2010 – REVISED MARCH 2014
POWER
(3)
GROUP
C PLL Observation Clock
— Oscillator input
— Oscillator output
— Oscillator ground
— PLL analog V (1.2-V filtered supply)
DD
— PLL analog V (for filter)
SS
— PLL analog V (1.2-V filtered supply)
DD
— PLL analog V (for filter)
SS
section. For electrical specifications on pullup and
AM1808
AM1808
DESCRIPTION
Device Overview 19