Datasheet

V850ES/JG3 CHAPTER 5 BUS CONTROL FUNCTION
R01UH0015EJ0300 Rev.3.00 Page 152 of 870
Sep 30, 2010
5.4 External Bus Interface Mode Control Function
The V850ES/JG3 includes the following two external bus interface modes.
• Multiplexed bus mode
• Separate bus mode
These two modes can be selected by using the EXIMC register.
(1) External bus interface mode control register (EXIMC)
The EXIMC register can be read or written in 8-bit or 1-bit units.
Reset sets this register to 00H.
0
Multiplexed bus mode
Separate bus mode
SMSEL
0
1
Mode selection
EXIMC 0 0 0 0 0 0 SMSEL
After reset: 00H R/W Address: FFFFFFBEH
Caution Set the EXIMC register from the internal ROM or internal RAM area before making an
external access.
After setting the EXIMC register, be sure to insert a NOP instruction.