CHAPTER 10 SERIAL INTERFACE FUNCTION
User’s Manual U15195EJ5V0UD
407
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.
Figure 10-1. Selecting Mode of UART1 or CSI1
7
0
PMC3
6
0
5
0
4
PMC34
3
PMC33
2
PMC32
1
PMC31
0
PMC30
Address
FFFFF446H
After reset
00H
7
0
PFC3
6
0
5
0
4
PFC34
3
PFC33
2
PFC32
1
0
0
0
Address
FFFFF466H
After reset
00H
PFC3n PMC3n
Operation
mode
0 0
Port
I/O
mode
0 1
UART1
mode
1 0
Port
I/O
mode
1 1
CSI1
mode
Remark
n = 2 to 4
Содержание PD703114
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