EVM User’s Guide
TI Confidential – Strictly Private
10
Inner row connectors
Pin No
Signal Name
Direction
Pin No
Signal Name
Direction
P3.1
+5V
IN
P4.1
UN-USED
OUT
P3.2
GND
IN
P4.2
UN-USED
OUT
P3.3
UN-USED
NA
P4.3
UN-USED
NA
P3.4
UN-USED
NA
P4.4
UART1_CTS
IN
P3.5
UN-USED
NA
P4.5
UART1_RTS
OUT
P3.6
UN-USED
NA
P4.6
UN-USED
NA
P3.7
UN-USED
NA
P4.7
NWP_LOG_TX
OUT
P3.8
UN-USED
NA
P4.8
WLAN_LOG_TX OUT
P3.9
UN-USED
NA
P4.9
UN-USED
IN
P3.10
UN-USED
NA
P4.10
UN-USED
OUT
Note :
All signals are 3.3V COMS logic levels and is referred w.r.t. CC3100MOD. For e.g.
UART1_TX is an output from the CC3100MOD.
For the SPI lines, the CC3100MOD always acts like a slave.
2.4 Power
The board is designed to accept power from a mated Launchpad or from the
CC3100EMUBOOST board. Some of the launchpads are not capable of sourcing the
peak current requirements of the WIFI. In such a case the USB connector on the
CC3100MODBOOST can be used to aid the peak current. The use of schottky diodes
ensure that the load sharing happens between the USB connectors on the Launchpad
and the Boosterpack without any board modifications.
Also the 3.3V power can be sourced from the Launchpad or from the 3.3V LDO on the
board. This is done by using the jumper J8. In the case where the Launchpad is not able
to source the 3.3V upto 350mA, then the J8 needs to be configured to work from the on-
board LDO
2.4.1 Power from the Launchpad or CC3100EMUBOOST
The most common scenario will be to power the CC3100MODBOOST from the mated
Launchpad. In this case the Launchpad provides 3.3V to the Booster-pack for its
operation. In addition to the 3.3V the Launchpad provides a 5V from the USB which is
used to drive a 3.3V LDO on the Booster-pack. This LDO sources the 3.3V used for the
top die flash used on development models.
