Datasheet

Table 21-7. Signals by Function, Except for GPIO (continued)
DescriptionBuffer Type
a
Pin TypePin NumberPin NameFunction
Ground reference for logic and I/O pins.Power-B6
C4
C5
F10
F11
F12
H3
J3
J10
K5
K6
K10
L10
GND
Power
The ground reference for the analog circuits (ADC,
Analog Comparators, etc.). These are separated
from GND to minimize the electrical noise contained
on VDD from affecting the analog functions.
Power-A5
B5
GNDA
Low drop-out regulator output voltage. This pin
requires an external capacitor between the pin and
GND of 1 µF or greater. The LDO pin must also be
connected to the VDD25 pins at the board level in
addition to the decoupling capacitor(s).
Power-E3LDO
Positive supply for most of the logic function,
including the processor core and most peripherals.
Power-C3
D3
F3
G3
VDD25
Positive supply for I/O and some logic.Power-E10
G10
G11
G12
H10
K7
K8
K9
VDD33
The positive supply for the analog circuits (ADC,
Analog Comparators, etc.). These are separated
from VDD to minimize the electrical noise contained
on VDD from affecting the analog functions. VDDA
pins must be supplied with a voltage that meets the
specification in “Recommended DC Operating
Conditions” on page 748, regardless of system
implementation.
Power-C6
C7
VDDA
QEI module 0 index.TTLIF1IDX0
QEI
QEI module 1 index.TTLIH12IDX1
QEI module 0 phase A.TTLIL1PhA0
QEI module 1 phase A.TTLIA12PhA1
QEI module 0 phase B.TTLIM2PhB0
QEI module 1 phase B.TTLIB11PhB1
SSI module 0 clockTTLI/OM4SSI0Clk
SSI
SSI module 0 frame signalTTLI/OL4SSI0Fss
SSI module 0 receiveTTLIL5SSI0Rx
SSI module 0 transmitTTLOM5SSI0Tx
June 18, 2012742
Texas Instruments-Production Data
Signal Tables
NRND: Not recommended for new designs.