NEC UPD703116 User Manual page 699

(b) Port 4 mode control register (PMC4)
This register can be read/written in 8-bit or 1-bit units.
7 6
PMC4 PMC47 PMC46
Bit position Bit name
7 PMC47
6 PMC46
5 PMC45
4 PMC44
3 PMC43
2 PMC42
1 PMC41
0 PMC40
CHAPTER 14 PORT FUNCTIONS
5 4 3
PMC45 PMC44 PMC43
Specifies operation mode of P47 pin.
0: I/O port mode
1: CTXD output mode
Specifies operation mode of P46 pin.
0: I/O port mode
1: CRXD input mode
Specifies operation mode of P45 pin.
0: I/O port mode
1: SCK1 I/O mode
Specifies operation mode of P44 pin.
0: I/O port mode
1: SO1 output mode
Specifies operation mode of P43 pin.
0: I/O port mode
1: SI1 input mode
Specifies operation mode of P42 pin.
0: I/O port mode
1: SCK0 I/O mode
Specifies operation mode of P41 pin.
0: I/O port mode
1: SO0 output mode
Specifies operation mode of P40 pin.
0: I/O port mode
1: SI0 input mode
User's Manual U14492EJ5V0UD
2 1 0
PMC42 PMC41 PMC40
Function
Address Initial value
FFFFF448H 00H
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