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10.1.1 Selecting UART1 or CSI1 mode
UART1 and CSI1 of the V850E/IA2 share pins, and therefore these interfaces cannot be used at the same time.
Select UART1 or CSI1 in advance by using the port 3 mode control register (PMC3) and port 3 function control
register (PFC3) (refer to 12.3.4 Port 3).
Caution UART1 or CSI1 transmission/reception operations are not guaranteed if the mode is switched
between UART1 and CSI1 during transmission or reception.
7
6
PMC3
0
0
7
6
PFC3
0
0
CHAPTER 10 SERIAL INTERFACE FUNCTION
Figure 10-1. Selecting Mode of UART1 or CSI1
5
4
0
PMC34
PMC33
5
4
0
PFC34
PFC33
PFC3n
PMC3n
0
0
0
1
1
0
1
1
Remark
n = 2 to 4
User's Manual U15195EJ5V0UD
3
2
1
PMC32
PMC31
PMC30
3
2
1
PFC32
0
Operation mode
Port I/O mode
UART1 mode
Port I/O mode
CSI1 mode
0
Address
After reset
FFFFF446H
00H
0
Address
After reset
0
FFFFF466H
00H
407
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