Datasheet

V850ES/JG3-H, V850ES/JH3-H CHAPTER 17 ASYNCHRONOUS SERIAL INTERFACE C (UARTC)
R01UH0042EJ0500 Rev.5.00 Page 723 of 1513
Aug 12, 2011
17.3 Mode Switching Between UARTC and Other Serial Interfaces
17.3.1 Mode switching between UARTC0 and CSIF4
In the V850ES/JG3-H and V850ES/JH3-H, CSIF4 and UARTC0 share the same pins and therefore cannot be used
simultaneously. Set UARTC0 in advance, using the PMC3 and PFC3 registers, before use.
Caution The transmit/receive operation of CSIF4 and UARTC0 is not guaranteed if these functions are
switched during transmission or reception. Be sure to disable the one that is not used.
Figure 17-2. CSIF4 and UARTC0 Mode Switch Settings
PMC3
After reset: 00H R/W Address: FFFFF446H
PMC37 PMC36 PMC35 PMC34 PMC33 PMC32 PMC31 PMC30
PFC3
After reset: 00H R/W Address: FFFFF466H
PFC37 PFC36 PFC35 PFC34 PFC33 PFC32 PFC31 PFC30
PFCE37 PFCE36 PFCE35 PFCE34 PFCE33 PFCE32 PFCE31 PFCE30
PFCE3
After reset: 00H R/W Address: FFFFF706H
Port I/O mode
ASCKC0 (UARTC0)
SCKF4 (CSIF4)
PMC32
0
1
1
Operation mode
PFCE32
×
0
0
PFC32
×
0
1
Port I/O mode
RXDC0 (UARTC)
SIF4 (CSIF4)
PMC31
0
1
1
Operation mode
PFCE31
×
0
0
PFC31
×
0
1
Port I/O mode
TXDC0 (UARTC)
SOF4 (CSIF4)
PMC30
0
1
1
Operation mode
PFCE30
×
0
0
PFC30
×
0
1
Remark × = don’t care