3 multiplier control register – NEC PD78F9488 User Manual
Page 269
CHAPTER 14 MULTIPLIER
User’s Manual U15331EJ4V1UD
269
14.3 Multiplier Control Register
The multiplier is controlled by the following register.
• Multiplier control register 0 (MULC0)
(1) Multiplier control register 0 (MULC0)
MULC0 indicates the operating status of the multiplier after operation, as well as controls the multiplier.
MULC0 is set with a 1-bit or 8-bit memory manipulation instruction.
RESET input clears this register to 00H.
Figure 14-2. Format of Multiplier Control Register 0
MULST0
0
1
Multiplier operation start control bit
0
0
0
0
0
0
0
MULST0
MULC0
Symbol
Address
After reset
R/W
FFD2H
00H
R/W
7
6
5
4
3
2
1
<0>
Stop operation after resetting counter to 0.
Enable operation
Operation stopped
Operation in progress
Operating status of multiplier
Caution Be sure to set bits 1 to 7 to 0.