User's Guide

USER GUIDE ITRON CONFIDENTIAL 12
Chapter 4: Connecting, Initializing and Programming the
Module
CONNECTING THE MODULE TO A HOST BOARD OR HOST DEVICE
The Itron Riva Modular LE is designed with castellations (pads) which are mapped to specific functions.
The mapping begins in the lower leftmost corner of the module and moves counter clockwise around the
module with pads numbered from 1 to 54.
When the module is paired with a host, the following mapping will facilitate integration.
Pin
Number
Castellation PURPOSE Maps to FUNCTIONALITY
3
CST1
GND
POWER SUPPLY
8
CST2
GND
POWER SUPPLY
53
CST3
Vin
POWER SUPPLY
54
CST4
Vin
POWER SUPPLY
5
CST5
3V3Out
POWER SUPPLY
6
CST6
3V3Out
POWER SUPPLY
13
CST7
COMM USART2 CTS
PA0
15
CST8
COMM USART2 RTS
PA1
17
CST9
COMM USART2 TX
PA2
22
CST10
COMM USART2 RX
PA3
34
CST11
COMM USB SOF
PA8
Figure
5: Module pad numbering