0X52A2: P2 Port Function Select Register (P2_Pmux) - Epson S1C17704 Technical Manual

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–P27 I/O port pins are shared with a peripheral module. This register configures the pin functions.
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)
S1C17704 TECHNICAL MANUAL
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
EPSON
Setting Init. R/W
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
10 I/O PORTS (P)
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
10-23