User manual
Table Of Contents
- Notes regarding these materials
 - Precautions on Using The Product Described Herein
 - For Inquiries About Product Contents or This Manual
 - Preface
 - Contents
- 1. Overview
 - 2. Contents of the Product Package
 - 3. Usage Precautions
 - 4. Starter Kit Usage Conditions
 - 5. Hardware Setup
 - 6. Software Setup
 - Appendix 1 Contents of CD-ROM
 - Appendix 2 Part List
 - Appendix 3 M3A-2152G02 Product Standards
- 1. Overview
 - 2. Functional Specifications
- 2.1 Configuration of the Power Supply
 - 2.2 FP Select Circuit
 - 2.3 MOD Select Circuit
 - 2.4 Serial I/O Interface
 - 2.5 Oscillator Circuit
 - 2.6 General-purpose Output Port LED Indicators
 - 2.7 General-purpose Input Port Control Circuit
 - 2.8 Analog Port Input Control Circuit
 - 2.9 CAN Interface
 - 2.10 JTAG Peripheral Circuit
 
 - 3. Reference Data
 
 
 - REVISION HISTORY
 

32176 Group 
Starter Kit User’s Manual M3A-2152 
REJ10B0224-0300/Rev.3.00  Jan. 2007  Page 48 of 82 
2.3  MOD Select Circuit   
This circuit is used to set operation modes of the M32R/ECU. The MOD0 power supply is 
configured in such a way that MOD0 is switched from the EXTMOD0 signal of extension connector 
(CON2) by using a jumper (J8). 
The MOD1 power supply defaults to 0 V. The MOD2 power supply is fixed to 0 V. 
J2
U1
M32R/ECU
MOD1
3
1
2
VCC
J4
TX6
3
1
2
VCC
EXTMOD0
MOD0
MOD2
Note: TX6 is not mounted but it only has one pattern available. 
Figure 2.3    MOD Select Circuit 
Table 2.3    Operation Mode Settings 
MOD0 MOD1 MOD2 Function 
0 0 0 
• When flash reprogramming is disabled: Single-chip mode 
• When flash reprogramming is enabled: Flash rewrite + single-chip mode 
1 0 0 
• When flash reprogramming is disabled: Processor mode 
• When flash reprogramming is enabled: Boot model + flash E/W enable 
0 1 0 External extension mode 
1 1 0 Settings inhibited 
Table 2.4    MOD Select Circuit (Jumper) 
Name Default  Condition  Description 
{ 
Shorted 
between 1–2 
MOD0 is controled by EXTMOD0 or is set to 0 unless it is 
controled by EXTMOD0 
J4 
Shorted 
between 2–3 
Sets MOD0 to 1 
{ 
Shorted 
between 1–2 
Sets MOD1 to 0 
J2 
Shorted 
between 2–3 
Sets MOD1 to 1 
Note: The J2 jumper is shorted by soldering. 










