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12.1.2 Selecting CSI0 or I
2
CSI0 and I
C of the V850ES/SA2 and V850ES/SA3 share pins, and therefore these interfaces cannot be used at
the same time. Select CSI0 or I
register 4 (PFC4) (refer to 4.3.5 Port 4).
Cautions 1. CSI0 or I
during transmission or reception. Be sure to disable the operation of the unit that is not
used.
C: µ µ µ µ PD703201Y, 703204Y, 70F3201Y, and 70F3204Y only
2
2. I
After reset:
PMC4
After reset:
PFC4
Remarks 1. n = 1, 2
2. × = Don't care
298
CHAPTER 12 SERIAL INTERFACE FUNCTION
2
C mode
2
C in advance by using port mode control register 4 (PMC4) and port function control
2
C transmission/reception operations are not guaranteed if the mode is changed
Figure 12-2. Selecting CSI0 or I
00H
R/W
Address:
FFFFF448H
7
6
5
0
PMC46
PMC45
00H
R/W
Address:
FFFFF468H
7
6
5
0
PFC46
0
PMC4n
PFC4n
×
0
1
0
1
1
Preliminary User's Manual U15905EJ1V0UD
2
C Mode
4
3
2
PMC44
PMC43
PMC42
4
3
2
PFC44
0
PFC42
Operation mode
Port I/O mode
CSI0 mode
2
I
C mode
1
0
PMC41
PMC40
1
0
PFC41
0
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