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TOSHIBA
TMP90C840
P7(Ml)
P6(MO)
7
6 5 4
3
2
1
o
1
1
1
1
1
SMCR
1
- 1 C CW7 1
- 1 C CW6 1
(FFCFH) 1 _ _ _ _ _ ...:.1--,-----:..1 _ _ _ _ _ ..;..1 _ _ 1
1
1
1
1
R/W
1
1
1
1
1
1
R/W
1_>
Stepping motor control port 0 rotating
direction
*
1 0 1
Normal rotation
1
1---1--------------------------------------1
1 1 1 Reverse rotation
1
Stepping motor control port 1 rotating
direction
*
1 0 1 Normal rotation
1
1---1--------------------------------------1
1 1 1 Reverse rotation
1
Fig. 3.7 (3)
Stepping Motor Control Port Rotating Direction Control Registers
7
6
5
4
3
2
1
o
1
1
1
1
1
P6
ISA63:SA62:SA61IsA601 P63: P62: P611 P601
( F FC CH ) 1
1
1
1
1
W
_R;;. , ; ;/:. . , . W _ _
>
Port 6
--------------->
Shifter alternate register 0 for
stepping motor control
7
6
5
4
3
2
1
o
1
1
1
1
I
P7
ISA73:SA72:SA71IsA701 P73: P72: P711 P701
(FFCDH)1
1
1
1
1
W
---------------->
Fig. 3.7 (4)
R/W
------>
Port 7
Shifter alternate register 1 for
stepping motor control
Ports 6 and 7
MPU90-103
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