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21 SERIAL
44
EPSON
S5U1C17801T1100 HARDWARE MANUAL
(SOFTWARE EVALUATION TOOL FOR S1C17801)
21 Serial
The S1C17801 has SPI, UART, I
2
C, and I
2
S 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)
I
2
C Expansion I/F (J8), EEPROM, AudioCodec
I
2
C | GPIO (P50,P51)
I
2
S (ch0) AudioCodec, through holes (TP47,TP48,TP49,TP50,TP51)
SPI | GPIO (P20,P21,P22,P23)
I
2
S (ch1) AudioCodec, through holes (TP47,TP48,TP49,TP50,TP51)
SPI | GPIO (P24,P25,P26,P27)