0X52A3: P3 Port Function Select Register (P3_Pmux) - Epson S1C17001 Technical Manual

0x52a3: P3 Port Function Select Register (P3_PMUX)

Register name Address Bit
P3 Port 0x52a3 D7–4 –
Function Select (8 bits)
D3
Register D2
(P3_PMUX)
D1
D0
The P30 to P33 input/output port pins are shared with the peripheral module pins. This register is used to select
how the pins are used.
D[7:4] Reserved
D3 P33MUX: P33 Port Function Select Bit
1 (R/W): P33 port
0 (R/W): DSIO (DBG) (default)
D2 P32MUX: P32 Port Function Select Bit
1 (R/W): P32 port
0 (R/W): DST2 (DBG) (default)
D1 P31MUX: P31 Port Function Select Bit
1 (R/W): P31 port
0 (R/W): DCLK (DBG) (default)
D0 P30MUX: P30 Port Function Select Bit
1 (R/W): FOUT3 (OSC)
0 (R/W): P30 port (default)
S1C17001 TECHNICAL MANUAL
Name Function
reserved
P33MUX P33 port function select
P32MUX P32 port function select
P31MUX P31 port function select
P30MUX P30 port function select
EPSON
10 INPUT/OUTPUT PORT (P)
Setting Init. R/W
–
1 P33 0 DSIO
1 P32 0 DST2
1 P31 0 DCLK
1 FOUT3 0 P30
Remarks
– – 0 when being read.
0 R/W
0 R/W
0 R/W
0 R/W
105