24 I/O PORTS (GPIO)
S1C33L26 TECHNICAL MANUAL
Seiko Epson Corporation
24-29
P1[7:4] Port Function Select Register (PMUX_P1_47)
Register name Address
Bit
Name
Function
Setting
Init. R/W
Remarks
P1[7:4] Port
Function Select
Register
(PMUX_P1_47)
0x300803
(8 bits)
D7–6 CFP17[1:0] P17 port function select
CFP17[1:0]
Function
0x0 R/W Write-protected
0x3
0x2
0x1
0x0
reserved
FPDAT15
P17
DPCO
D5–4 CFP16[1:0] P16 port function select
CFP16[1:0]
Function
0x0 R/W
0x3
0x2
0x1
0x0
reserved
FPDAT14
P16
DST1
D3–2 CFP15[1:0] P15 port function select
CFP15[1:0]
Function
0x0 R/W
0x3
0x2
0x1
0x0
reserved
FPDAT13
P15
DST0
D1–0 CFP14[1:0] P14 port function select
CFP14[1:0]
Function
0x0 R/W
0x3
0x2
0x1
0x0
CMU_CLK
FPDAT12
FPDAT19
P14
The GPIO pins are shared with the peripheral module pins. This register is used to select how the pins are used.
D[7:6]
CFP17[1:0]: P17 Port Function Select Bits
0x3 (R/W): Reserved
0x2 (R/W): FPDAT15 (LCDC)
0x1 (R/W): P17 (GPIO)
0x0 (R/W): DPCO (DBG) (default)
D[5:4]
CFP16[1:0]: P16 Port Function Select Bits
0x3 (R/W): Reserved
0x2 (R/W): FPDAT14 (LCDC)
0x1 (R/W): P16 (GPIO)
0x0 (R/W): DST1 (DBG) (default)
D[3:2]
CFP15[1:0]: P15 Port Function Select Bits
0x3 (R/W): Reserved
0x2 (R/W): FPDAT13 (LCDC)
0x1 (R/W): P15 (GPIO)
0x0 (R/W): DST0 (DBG) (default)
D[1:0]
CFP14[1:0]: P14 Port Function Select Bits
0x3 (R/W): CMU_CLK (CMU)
0x2 (R/W): FPDAT12 (LCDC)
0x1 (R/W): FPDAT19 (LCDC)
0x0 (R/W): P14 (GPIO) (default)
P2[1:0] Port Function Select Register (PMUX_P2_01)
Register name Address
Bit
Name
Function
Setting
Init. R/W
Remarks
P2[1:0] Port
Function Select
Register
(PMUX_P2_01)
0x300804
(8 bits)
D7–4 –
reserved
–
–
–
0 when being read.
D3–2 CFP21[1:0] P21 port function select
CFP21[1:0]
Function
0x0 R/W Write-protected
0x3
0x2
0x1
0x0
reserved
reserved
P21
SDCLK
D1–0 CFP20[1:0] P20 port function select
CFP20[1:0]
Function
0x0 R/W
0x3
0x2
0x1
0x0
reserved
reserved
P20
SDCKE
The GPIO pins are shared with the peripheral module pins. This register is used to select how the pins are used.
D[7:4]
Reserved