X52A2: P2 Port Function Select Register (P2_Pmux) - Epson S1C17001 Technical Manual

10 INPUT/OUTPUT PORT (P)

0x52a2: P2 Port Function Select Register (P2_PMUX)

Register name Address Bit
P2 Port 0x52a2 D7
Function Select (8 bits)
D6
Register D5
(P2_PMUX)
D4
D3
D2
D1
D0
The P20 to P27 input/output port pins are shared with the peripheral module pins. This register is used to select
how the pins are used.
D7 P27MUX: P27 Port Function Select Bit
1 (R/W): EXCL3 (T16E)
0 (R/W): P27 port (default)
D6 P26MUX: P26 Port Function Select Bit
1 (R/W): TOUT (T16E)
0 (R/W): P26 port (default)
D5 P25MUX: P25 Port Function Select Bit
1 (R/W): SCLK (UART)
0 (R/W): P25 port (default)
D4 P24MUX: P24 Port Function Select Bit
1 (R/W): SOUT (UART)
0 (R/W): P24 port (default)
D3 P23MUX: P23 Port Function Select Bit
1 (R/W): SIN (UART)
0 (R/W): P23 port (default)
D2 P22MUX: P22 Port Function Select Bit
1 (R/W): SPICLK (SPI)
0 (R/W): P22 port (default)
D1 P21MUX: P21 Port Function Select Bit
1 (R/W): SDO (SPI)
0 (R/W): P21 port (default)
D0 P20MUX: P20 Port Function Select Bit
1 (R/W): SDI (SPI)
0 (R/W): P20 port (default)
104
Name Function
P27MUX P27 port function select
P26MUX P26 port function select
P25MUX P25 port function select
P24MUX P24 port function select
P23MUX P23 port function select
P22MUX P22 port function select
P21MUX P21 port function select
P20MUX P20 port function select
Setting
1 EXCL3 0 P27
1 TOUT 0 P26
1 SCLK 0 P25
1 SOUT 0 P24
1 SIN 0 P23
1 SPICLK 0 P22
1 SDO 0 P21
1 SDI 0 P20
EPSON
Init. R/W Remarks
0 R/W
0 R/W
0 R/W
0 R/W
0 R/W
0 R/W
0 R/W
0 R/W
S1C17001 TECHNICAL MANUAL