THW-EKGS01 - REV. 0.2
©2019 EXOR Embedded S.r.l. - Subject to change without notice
exorint.com
28
3.10
LPC Bus
The gigaSOM carrier features a Low Pin Count bus on JST connector (J11).
Pin Signal name
Description
1
GND
Ground
2
LPC_CLKRUN
Control LPC Clock Signals
3
LPC_CLK
25 Mhz output clock
4
LPC_FRAME
LFRAME# indicates the start of an LPC cycle, or an abort
5
LPC_AD3
LPC Multiplexed Command, Adddress, Data
6
LPC_AD2
LPC Data
7
LPC_AD1
LPC Data
8
LPC_AD0
LPC Data
9
LPC_SERIRQ
Serial Interrupt Request
10 +3V3
Output voltage (3V3)
Table 9. LPC Bus Description
3.11
SPI Interfaces
The gigaSOM carrier provides SPI signals on header (J9) and Fast SPI Interface on header (J10).
Pin
Signal name
Description
Pin
Signal name
Description
1
+1V8
Output voltage (1V8)
2
+3V3
Output voltage (3V3)
3
SOC_SPI_FS0
Used as the SPI bus
request signal
4
SOC_SPI_RXD
Data Input pin for the
processor
5
SOC_SPI_TXD
Data Output pin for the
processor
6
GND
Ground
7
GND
Ground
8
SOC_SPI_CLK
SPI Clock signal
9
SOC_SPI_FS1
Used as the SPI bus
request signal
10
GND
Ground
Table 10. SPI Header Description
