21 SERIAL
44 EPSON S5U1C17801T1100 HARDWARE MANUAL
(SOFTWARE EVALUATION TOOL FOR S1C17801)
21 Serial
The S1C17801 has SPI, UART, I2C, and I2S serial ports. Each of the ports is multiplexed with GPIO.
Table 21.1 Serial Port
Mode Connected to Multiplex
SPI (ch0) SD I/F, through holes (TP52,TP53,TP54,TP55) SPI | GPIO (P10,P11,P12,P13)
SPI (ch1) Tri-color LED
SPI | GPIO (P13,P14,P15,P16)
UART Expansion I/F (J8), through holes (TP42,TP43,TP44)
UART | GPIO (P40,P41,P42)
I2C Expansion I/F (J8), EEPROM, AudioCodec
I2C | GPIO (P50,P51)
I2S (ch0) AudioCodec, through holes (TP47,TP48,TP49,TP50,TP51)
SPI | GPIO (P20,P21,P22,P23)
I2S (ch1) AudioCodec, through holes (TP47,TP48,TP49,TP50,TP51)
SPI | GPIO (P24,P25,P26,P27)