NEC PD703114 User Manual page 569

(b) Port 3 mode control register (PMC3)
This register can be read or written in 8-bit or 1-bit units.
7 6
PMC3 0 0
Bit position Bit name
4 PMC34
3 PMC33
2 PMC32
1 PMC31
0 PMC30
(c) Port 3 function control register (PFC3)
This register can be read or written in 8-bit or 1-bit units. Write 0 in bits other than 2 to 4.
Caution When port mode is specified by the port 3 mode control register (PMC3), the setting of
this register is invalid.
7 6
PFC3 0 0
Bit position Bit name
4 PFC34
3 PFC33
2 PFC32
CHAPTER 12 PORT FUNCTIONS
5 4 3
0 PMC34 PMC33 PMC32
Specifies operation mode of P34 pin
0: I/O port mode
1: ASCK1/SCK1 I/O mode
Specifies operation mode of P33 pin
0: I/O port mode
1: TXD1/SO1 output mode
Specifies operation mode of P32 pin
0: I/O port mode
1: RXD1/SI1 input mode
Specifies operation mode of P31 pin
0: I/O port mode
1: TXD0 output mode
Specifies operation mode of P30 pin
0: I/O port mode
1: RXD0 input mode
5 4 3
0 PFC34 PFC33 PFC32
Specifies operation mode of P34 pin in control mode
0: ASCK1 I/O mode
1: SCK1 I/O mode
Specifies operation mode of P33 pin in control mode
0: TXD1 output mode
1: SO1 output mode
Specifies operation mode of P32 pin in control mode
0: RXD1 input mode
1: SI1 input mode
User's Manual U15195EJ5V0UD
2 1 0
PMC31 PMC30
Function
2 1 0
0 0 FFFFF466H
Function
Address After reset
FFFFF446H 00H
Address After reset
00H
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