Renesas 32176 Manual De Usuario

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.