NimbeLink Skywire RL78 Manuale utente

Skywire® RL78/Kurumi Adapter

User Manual

NimbeLink Corp

Updated: October 2017

PN 30018 rev 2© NimbeLink Corp. 2017. All rights reserved. 1

Table of Contents 
 
Table of Contents 2 
Introduction 3 
Product Overview 3 
Orderable Part Numbers 3 
Additional Resources 3 
Device Overview 4 
Technical Specifications 5 
Electrical Specifications 5 
Operating Parameters 5 
Power 5 
Connection Descriptions 6 
Operating Modes 7 
RL78/G13 Demonstration Kit PMOD Adapter 7 
About 7 
Block Diagram 7 
Switch Configuration 8 
Connections 8 
SPI to UART Chip Configurations 8 
Board Orientation 9 
Renesas Kurumi Adapter 9 
About 9 
Block Diagram 10 
Switch Configuration 10 
Connections 11 
Board Orientation 11 
 
 
 
 
   
PN 30018 rev 2© NimbeLink Corp. 2017. All rights reserved. 2 

1. Introduction

1.1 Product Overview

This document is the Hardware Reference Manual for the Skywire® RL78/Kurumi

Adapter. The Skywire RL78/Kurumi Adapter is designed to provide robust cellular

connectivity for the Renesas RL78/G13 Demonstration Kit and the Renesas Kurumi.

The Skywire Cellular Modem at the heart of this adapter connects your M2M

device to the Internet of things without the costs, delays, and hassles of federal

and carrier certifications.

The NimbeLink Skywire modem is available with bundled data plans from leading

cellular carriers.

1.2 Orderable Part Numbers

Orderable Device

Description

Manufacturer

Carrier

Networ

k Type

NL-AB-RL78

Skywire RL78/Kurumi Adapter Board

NimbeLink

NL-SW-1xRTT-V

Skywire 1xRTT Cellular Modem without data plan.

2G Modem.

NimbeLink

Verizon

CDMA

1xRTT

TG.30.8113

Primary & Diversity Cellular Antenna

Taoglas

NL-SW-EVDO-V

Skywire EVDO Cellular Modem without Data plan.

3G Modem.

NimbeLink

Verizon

CDMA

1xRTT

MA.301.A.AB.001

3G Primary Antenna. GPS/GLONASS Antenna for

Skywire EVDO*

Taoglas

1.3 Additional Resources

● NimbeLink's Skywire2G 1xRTT Product Page

● NimbeLink's Skywire 3G CDMA/EVDO Product Page

● Telit’s CE910 Hardware User Guide

● Telit’s DE910 Hardware User Guide

PN 30018 rev 2© NimbeLink Corp. 2017. All rights reserved. 3

1.4 Device Overview

Top Side

Bottom Side

PN 30018 rev 2© NimbeLink Corp. 2017. All rights reserved. 4

2. Technical Specifications

2.1 Electrical Specifications

2.1.1 Operating Parameters

Parameter

Value

Unit

Skywire UART Baud Rate

115200

bps

Skywire I/O Voltage

1.65-5.5

Skywire Power Consumption, Active Cell

750

Normal

Power Saving

1.1

Skywire Input Voltage

J1 Input Voltage

PMOD Input Voltage

3.3

PMOD I/O Voltage

3.3

Kurumi Input Voltage

Temperature Range

-40 to +85oC

oC

Dimensions

47 x 82 x 25

2.2 Power

The Skywire RL78/Kurumi Adapter requires 5V and 3.3V inputs. Connector J1

accepts 5V input voltage and is used to supply power to the Skywire 4V Power

Supply. The acceptable input Voltage range for J1 is 4.8-5.2V. Do not exceed

5.5V.

The Skywire Cellular Modem will regularly consume high amounts of current

(~750 mA) from the adapters power supply. It is recommended to have 1A of

available source current available for the adapter board.

PN 30018 rev 2© NimbeLink Corp. 2017. All rights reserved. 5

2.3 Connection Descriptions

Designator

Description

SW1

Mode Selection Switch

5V Power IN, Barrel Jack

Skywire Breakout Header

PMOD Connector

Current Test Point

Skywire Breakout Header

Renesas Kurumi Breakout Header

Renesas Kurumi Programming Header

Renesas Kurumi Socket

PN 30018 rev 2© NimbeLink Corp. 2017. All rights reserved. 6

3. Operating Modes

3.1 RL78/G13 Demonstration Kit PMOD Adapter

3.1.1 About

The PMOD interface on the Skywire RL78-Kurumi Adapter adheres to the

Digilent PMOD specifications for Type 2A (Expanded SPI) PMOD Interface with

a standard twelve-pin connector.

The PMOD interface connects to the Renesas Demonstration Kit for the

RL78/G13 (YRDKRL78G13) through the PMOD2 connector. The adapter’s

onboard SPI to UART converter provides protocol translation allowing for the

demonstrations kits Type 2A (Expanded SPI) PMOD Interface to communicate

with the Skywire module.

3.1.2 Block Diagram

PN 30018 rev 2© NimbeLink Corp. 2017. All rights reserved. 7

3.1.3 Switch Configuration

SW1 is used to control the configuration mode of the adapter. To configure the

adapter for use with the PMOD connection do the following:

1. Remove power from J1 and the PMOD connection.

2. Place SW1.1-SW1.5 in the on position.

3. Place SW1.6 in the off position.

4. Configuration complete.

3.1.4 Connections

The Skywire RL78-Kurumi Adapter connects to the RL78/G13 through a Type 2A

(Expanded SPI) PMOD Interface. The table below describes the connections.

Signal

Description

Slave Select. Active low to enable slave device

MOSI

Master Out Slave In. Data from master to slave

MISO

Master In Slave Out. Data from slave to master

SCK

Serial clock. Master provides the clock to shift the data

GND

VCC

INT

Interrupt signal from slave to master, connected to the SPI to

UART converter chip

RESET

Reset signal for master to reset SPI to UART converter

Skywire ON/OFF

Skywire On Off control line

Skywire DTR

Skywire DTR signal

GND

VCC

3.1.5 SPI to UART Chip Configurations

To configure the XR20M1170 SPI to UART interface for communication between the

PMOD interface (SPI) and the Skywire Cellular Modem (UART, 115200 bps) use the

configuration sequence in the table below. The SPI interface from the host processor

PN 30018 rev 2© NimbeLink Corp. 2017. All rights reserved. 8

should be configured to SPI MODE0, most Significant bit first, and the clocking rate must

be 16 MHz or lower.

Configuration Step

Value

Notes

LCR

0x03

0xBF

Configure LCR for EFR write

EFR

0x02

0x10

Configure EFR

LCR

0x03

0xB0

Configure LCR for Baud rate config

DLL

0x00

0x08

Configure baud rate for 115200 bps

DLM

0x01

0x00

Configure baud rate for 115200 bps

DLD

0x02

0x00

Configure baud rate for 115200 bps

MCR

0x04

0x03

Configure clock prescaler

LCR

0x03

0xBF

Write LCR for EFR write

EFR

0x02

0x00

Disable config mode

LCR

0x03

Reset LCR for operation mode

LCR

0x02

0x07

Enable and clear FIFOs

3.1.6 Board Orientation

The adapter should be connected to the RL78/G13 Demonstration kit with the

Skywire modem facing towards the demonstration kit as shown below or with a

right angle adaptor with the Skywire Modem facing upwards.

3.2 Renesas Kurumi Adapter

3.2.1 About

The Renesas Kurumi interface on the Skywire RL78-Kurumi Adapter provides a

UART connection between the two boards.

3.2.2 Block Diagram

3.2.3 Switch Configuration

SW1 is used to control the configuration mode of the adapter. To configure the

adapter for use with the Renesas Kurumi do the following:

1. Remove power from J1 and the PMOD connection.

2. Place SW1.1-SW1.5 in the off position.

3. Place SW1.6 in the on position.

4. Configuration complete.

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