LM3S6611 Datasheet, PDF (590/647 Pages) List of Unclassifed Manufacturers – Microcontroller

Signal Tables
is important that the clock to the module is never enabled by setting the corresponding bit in the
RCGCx register.
Table 17-9. Connections for Unused Signals (100-pin LQFP)
Function
Signal Name
Pin Number
Acceptable Practice
Preferred Practice
ERBIAS
41
Connect to GND through
Connect to GND through
12.4-kΩ resistor.
12.4-kΩ resistor.
GNDPHY
42
85
86
MDIO^a
58
GND
NC
GND
NC
RXIN
37
NC
GND
Ethernet
RXIP
40
NC
TXON
46
NC
GND
GND
TXOP
43
NC
GND
VCCPHY
36
VDD
VDD
83
84
XTALNPHY^a
17
NC
XTALPPHY^a
16
NC
NC
GND
GPIO
All unused GPIOs
-
NC
GND
HIB
51
NC
NC
VBAT
55
NC
GND
Hibernate
WAKE
50
NC
GND
XOSC0
52
NC
GND
XOSC1
53
NC
NC
No Connects
NC
-
NC
NC
OSC0
48
NC
GND
System
Control
OSC1
RST
49
NC
NC
64
Pull up as shown in Figure Connect through a capacitor to
5-1 on page 167
GND as close to pin as possible
a. Note that the Ethernet PHY is powered up by default. The PHY cannot be powered down unless a clock source is provided
and the MDIO pin is pulled up through a 10-kΏ resistor.
Table 17-10 on page 591 show how to handle signals for functions that are not used in a particular
system implementation for devices that are in a 108-pin BGA package. Two options are shown in
the table: an acceptable practice and a preferred practice for reduced power consumption and
improved EMC characteristics. If a module is not used in a system, and its inputs are grounded, it
is important that the clock to the module is never enabled by setting the corresponding bit in the
RCGCx register.
590
July 16, 2014
Texas Instruments-Production Data