Epson S1C17624 Technical Manual page 109

P3[3:0] Port Function Select Register (P30_33PMuX)
Register name address Bit
P3[3:0] Port 0x52a6 D7–6 P33MuX[1:0] P33 port function select
Function Select
(8 bits)
Register
(P30_33PMuX)
D5–4 P32MuX[1:0] P32 port function select
D3–2 P31MuX[1:0] P31 port function select
D1–0 P30MuX[1:0] P30 port function select
The P30 to P33 port pins are shared with the peripheral module pins. This register is used to select how the pins are
used.
D[7:6] P33MuX[1:0]: P33 Port Function Select Bits
0x3 (R/W): TOUTA6 (T16A2 Ch.1 comparator mode)
or CAPA6 (T16A2 Ch.1 capture mode)
0x2 (R/W): SCL0 (I2CM)
0x1 (R/W): SCL1 (I2CS)
0x0 (R/W): P33 (default)
D[5:4] P32MuX[1:0]: P32 Port Function Select Bits
0x3 (R/W): TOUTB5 (T16A2 Ch.0 comparator mode)
or CAPB5 (T16A2 Ch.0 capture mode)
0x2 (R/W): SENB1 (RFC)
0x1 (R/W): SDA0 (I2CM)
0x0 (R/W): P32 (default)
D[3:2] P31MuX[1:0]: P31 Port Function Select Bits
0x3 (R/W): TOUTA5 (T16A2 Ch.0 comparator mode)
or CAPA5 (T16A2 Ch.0 capture mode)
0x2 (R/W): SENA1 (RFC)
0x1 (R/W): SCL0 (I2CM)
0x0 (R/W): P31 (default)
D[1:0] P30MuX[1:0]: P30 Port Function Select Bits
0x3 (R/W): Reserved
0x2 (R/W): REF1 (RFC)
0x1 (R/W): SIN1 (UART Ch.1)
0x0 (R/W): P30 (default)
S1C17624/604/622/602/621 TeChniCal Manual
name Function
Seiko epson Corporation
Setting init. R/W
P33MUX[1:0] Function 0x0 R/W TOUTA6/CAPA6:
0x3 TOUTA6/CAPA6
0x2 SCL0
0x1 SCL1
0x0 P33
P32MUX[1:0] Function 0x0 R/W TOUTB5/CAPB5:
0x3 TOUTB5/CAPB5
0x2 SENB1
0x1 SDA0
0x0 P32
P31MUX[1:0] Function 0x0 R/W TOUTA5/CAPA5:
0x3 TOUTA5/CAPA5
0x2 SENA1
0x1 SCL0
0x0 P31
P30MUX[1:0] Function 0x0 R/W
0x3 reserved
0x2 REF1
0x1 SIN1
0x0 P30
(Selectable only in the S1C17624/604)
(Selectable only in the S1C17624/604)
(Selectable only in the S1C17624/604)
9 i/O PORTS (P)
Remarks
S1C17624/604 only
S1C17624/604 only
S1C17624/604 only
9-19