1-32 (No.49793)
SECTION 4
Description of major ICs
4.1
BA6956AN (IC830, IC831) : Reversible motor driver
• Block diagram
• Pin function
• Truth table
TSD
CONTROL LOGIC
1
2
3
4
5
6
7
8
9
V
REF
OUT2
RNF
OUT1
VM
Vcc
FIN
GND
RIN
Pin No. Symbol Function
1
VREF
Output high voltage level control terminal
2
OUT2
Output terminal for motor
3
RNF
GND of driver division
4
OUT1
Output terminal for motor
5
VM
Power supply for driver division
6
Vcc
Power supply for signal division
7
FIN
Input terminal for control logic
8
GND
GND
9
RIN
Input terminal for control logic
FIN
RIN
OUT1 OUT2
MODE
H
L
H
L
Forward rotation mode
L
H
L
H
Reverse rotation mode
H
H
L
L
Break Mode
L
L
OPEN OPEN Stand-by mode
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