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32176 Group
Starter Kit User’s Manual M3A-2152
REJ10B0224-0300/Rev.3.00 Jan. 2007 Page 54 of 82
2.8 Analog Port Input Control Circuit
The analog port input control circuit is used to control the status of the M32R/ECU ports AD0IN0
and AD0IN1 by using VR controls VOL0 and VOL1.
U1
M32R/ECU
AVCC
AD0IN0
H3
1 2
H4
1 2
AVCC
VOL0
VOL1
AD0IN1
Figure 2.9 Analog Port Input Control Circuit
Table 2.12 Analog Port Input Control (Jumper)
Name Default Condition Description
{
Shorted
between 1–2
Uses VR control (VOL0)
H3
Open
between 1–2
Does not use VR control (VOL0)
{
Shorted
between 1–2
Uses VR control (VOL1)
H4
Open
between 1–2
Does not use VR control (VOL1)
Note: The H3 and H4 jumpers are shorted by soldering.