NEC UPD703116 User Manual page 697

(b) Port 3 mode control register (PMC3)
This register can be read/written in 8-bit or 1-bit units.
7 6
PMC3 PMC37 PMC36
Bit position Bit name
7 PMC37
6 PMC36
5 PMC35
4 PMC34
3 PMC33
2 PMC32
1 PMC31
0 PMC30
CHAPTER 14 PORT FUNCTIONS
5 4 3
PMC35 PMC34 PMC33
Specifies operation mode of P37 pin.
0: I/O port mode
1: ASCK2 I/O mode
Specifies operation mode of P36 pin.
0: I/O port mode
1: TXD2 output mode
Specifies operation mode of P35 pin.
0: I/O port mode
1: RXD2 input mode
Specifies operation mode of P34 pin.
0: I/O port mode
1: ASCK1 I/O mode
Specifies operation mode of P33 pin.
0: I/O port mode
1: TXD1 output mode
Specifies operation mode of P32 pin.
0: I/O port mode
1: RXD1 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
User's Manual U14492EJ5V0UD
2 1 0
PMC32 PMC31 PMC30
Function
Address Initial value
FFFFF446H 00H
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