17
EXTERNAL BUS INTERFACE
17-17
32192/32195/32196 Group Hardware Manual
Rev.1.10 REJ09B0123-0110 Apr.06.07
17.2 External Bus Interface Related Registers
Figure 17.2.2 Setting procedure of CLKOUT Select (CLKOSEL) bit
If a write cycle to any other area occurs during
this interval, the value that was set in the
CLKOSEL bit is not reflected. (Note 1)
CLKOSELP
"1"
CLKOSELP
"0"
CLKOSEL
Set value
Example of correct settings
Cases where settings have no effect
Because a write cycle to other area exists,
the set value is not reflected. (Note 1)
CLKOSELP
"1"
Write to other area
(1)
(2)
Because these two consecutive writes comprise a pair,
the next set value is not reflected.
CLKOSELP
"1"
CLKOSELP
"1"
CLKOSELP
"0"
CLKOSEL
Set value
CLKOSELP
"0"
CLKOSEL
Set value
Note 1: The writing cycle to the other area is the writing cycle from CPU, DMA, SDI (tool), NBD to any other area.
The writing cycle from RTD and DRI do not effect.
Note: Operate this setup on internal ROM or in the program on internal RAM.
