Epson S1C17624 Technical Manual page 107

P2[3:0] Port Function Select Register (P20_23PMuX)
Register name address Bit
P2[3:0] Port 0x52a4 D7–6 P23MuX[1:0] P23 port function select
Function Select
(8 bits)
Register
(P20_23PMuX)
D5–4 P22MuX[1:0] P22 port function select
D3–2 P21MuX[1:0] P21 port function select
D1–0 P20MuX[1:0] P20 port function select
The P20 to P23 port pins are shared with the peripheral module pins. This register is used to select how the pins are
used.
D[7:6] P23MuX[1:0]: P23 Port Function Select Bits
0x3 (R/W): Reserved
0x2 (R/W): Reserved
0x1 (R/W): SENB0 (RFC)
0x0 (R/W): P23 (default)
D[5:4] P22MuX[1:0]: P22 Port Function Select Bits
0x3 (R/W): Reserved
0x2 (R/W): Reserved
0x1 (R/W): AIN0 (ADC10)
0x0 (R/W): P22 (default)
D[3:2] P21MuX[1:0]: P21 Port Function Select Bits
0x3 (R/W): Reserved
0x2 (R/W): Reserved
0x1 (R/W): AIN1 (ADC10)
0x0 (R/W): P21 (default)
D[1:0] P20MuX[1:0]: P20 Port Function Select Bits
0x3 (R/W): Reserved
0x2 (R/W): Reserved
0x1 (R/W): AIN2 (ADC10)
0x0 (R/W): P20 (default)
S1C17624/604/622/602/621 TeChniCal Manual
name Function
Seiko epson Corporation
Setting init. R/W
P23MUX[1:0] Function 0x0 R/W
0x3 reserved
0x2 reserved
0x1 SENB0
0x0 P23
P22MUX[1:0] Function 0x0 R/W
0x3 reserved
0x2 reserved
0x1 AIN0
0x0 P22
P21MUX[1:0] Function 0x0 R/W
0x3 reserved
0x2 reserved
0x1 AIN1
0x0 P21
P20MUX[1:0] Function 0x0 R/W
0x3 reserved
0x2 reserved
0x1 AIN2
0x0 P20
9 i/O PORTS (P)
Remarks
9-17