Avalue Technology REN-CBW Quick Reference Manual page 17

2.3.3 SPI connector (JSPI1)
2.3.4 SWD connector (JSWD1)
Signal
+3.3VSB
SPI_CS_RST#
SPI_IO1
SPI_IO3_HOLD#
REN-CBW & EBC-05B1 Quick Reference Guide 17
Quick Reference Guide
PIN PIN Signal
1 2 GND
3 4 SPI_CLK
5 6 SPI_IO0
7 8 SPI_IO2_WP#
Signal PIN
+3.3VSB 1
SWDIO 2
SWDCLK 3
GND 4