User`s manual

Operational Specifications
3.2.2 AVCC and AVREF Select Jumper (JP3, JP4)
Rev.1.01 Jan 31, 2008
3-17
REJ10J1262-0101
3
3.2.2 AVCC and AVREF Select Jumper (JP3, JP4)
The sources for the SH7211 power supply voltages supplied to AVCC and AVREF can be selected by setting JP3
and JP4.
Figure3.2.3 shows the pin assignment of AVCC and AVREF select jumper. Table3.2.2 lists the jumper setting of
AVCC and AVREF select jumper.
Top View of the
Component Side
Board
Edge
1
2
AVCCSEL
1
2
AVREFSEL
JP3
JP4
Figure3.2.3 Pin Assignment of AVCC and AVREF Select Jumper (JP3, JP4)
Table3.2.2 Jumper Setting of AVCC and AVREF Select Jumper (JP3, JP4)
Jumper Setting Function
1 - 2
AVCC of SH7211 is connected with 5V fixed power supply voltage
JP3
AVCCSEL
Open
External Power Supply Voltage (supplied from J7 or H1)
1 - 2
AVREF of SH7211 is connected with 5V fixed power supply voltage
JP4
AVREFSEL
Open
External Power Supply Voltage (supplied from J7 or H2)
: Initial Setting
Note: Do not change jumper settings during the operation of M3A-HS11. Ensure to turn off the power for the
M3A-HS11 before changing jumper settings.