LM3S9U90_15 Datasheet, PDF (1220/1315 Pages) Texas Instruments – Stellaris LM3S9U90 Microcontroller

Signal Tables
Table 23-13. Connections for Unused Signals (108-Ball BGA)
Function
Signal Name
Pin Number
Acceptable Practice
Preferred Practice
ERBIAS
J3
Connect to GND through Connect to GND through 12.4-kΩ
12.4-kΩ resistor.
resistor.
RXIN
L7
NC
GND
RXIP
M7
NC
Ethernet
TXON
L8
NC
GND
GND
TXOP
M8
NC
XTALNPHY^a
J1
NC
XTALPPHY^a
J2
NC
GND
NC
GND
GPIO
All unused GPIOs
-
NC
GND
HIB
M12
NC
NC
VBAT
L12
NC
GND
Hibernate
WAKE
M10
NC
GND
XOSC0
K11
NC
GND
XOSC1
K12
NC
NC
No
NC
-
NC
NC
Connects
OSC0
L11
NC
GND
System
Control
OSC1
RST
M11
NC
NC
H11
Pull up as shown in Figure Connect through a capacitor to
5-1 on page 192
GND as close to pin as possible
USB
USB0RBIAS
USB0DM
B12
Connect to GND through Connect to GND through 10-kΩ
10-kΩ resistor.
resistor.
C11
NC
GND
USB0DP
C12
NC
GND
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.
1220
Texas Instruments-Production Data
July 03, 2014