24 I/O PORTS (GPIO)
S1C33L26 TECHNICAL MANUAL
Seiko Epson Corporation
24-35
D[3:2]
CFP75[1:0]: P75 Port Function Select Bits
0x3 (R/W): #ADTRIG (ADC10)
0x2 (R/W): #WAIT (SRAMC)
0x1 (R/W): AIN5 (ADC10)
0x0 (R/W): P75 (GPIO) (default)
D[1:0]
CFP74[1:0]: P74 Port Function Select Bits
0x3 (R/W): Reserved
0x2 (R/W): Reserved
0x1 (R/W): AIN4 (ADC10)
0x0 (R/W): P74 (GPIO) (default)
P8[3:0] Port Function Select Register (PMUX_P8_03)
Register name Address
Bit
Name
Function
Setting
Init. R/W
Remarks
P8[3:0] Port
Function Select
Register
(PMUX_P8_03)
0x300810
(8 bits)
D7–6 CFP83[1:0] P83 port function select
CFP83[1:0]
Function
0x0 R/W Write-protected
0x3
0x2
0x1
0x0
reserved
USIL_DO
FPDRDY
P83
D5–4 CFP82[1:0] P82 port function select
CFP82[1:0]
Function
0x0 R/W
0x3
0x2
0x1
0x0
reserved
USIL_DI
FPSHIFT
P82
D3–2 CFP81[1:0] P81 port function select
CFP81[1:0]
Function
0x0 R/W
0x3
0x2
0x1
0x0
reserved
USIL_CK
FPLINE
P81
D1–0 CFP80[1:0] P80 port function select
CFP80[1:0]
Function
0x0 R/W
0x3
0x2
0x1
0x0
reserved
USIL_CS
FPFRAME
P80
The GPIO pins are shared with the peripheral module pins. This register is used to select how the pins are used.
D[7:6]
CFP83[1:0]: P83 Port Function Select Bits
0x3 (R/W): Reserved
0x2 (R/W): USIL_DO (USIL)
0x1 (R/W): FPDRDY (LCDC)
0x0 (R/W): P83 (GPIO) (default)
D[5:4]
CFP82[1:0]: P82 Port Function Select Bits
0x3 (R/W): Reserved
0x2 (R/W): USIL_DI (USIL)
0x1 (R/W): FPSHIFT (LCDC)
0x0 (R/W): P82 (GPIO) (default)
D[3:2]
CFP81[1:0]: P81 Port Function Select Bits
0x3 (R/W): Reserved
0x2 (R/W): USIL_CK (USIL)
0x1 (R/W): FPLINE (LCDC)
0x0 (R/W): P81 (GPIO) (default)
D[1:0]
CFP80[1:0]: P80 Port Function Select Bits
0x3 (R/W): Reserved
0x2 (R/W): USIL_CS (USIL)
0x1 (R/W): FPFRAME (LCDC)
0x0 (R/W): P80 (GPIO) (default)