User Manual

JS7688-core-board manual Hangzhou Jotale Technology Co., Ltd www.jotale.com
12
input pin. Note: it
is only necessary
to connect when
use the external
flash burner. It is
usually not
connect
36 GND N/A N/A N/A GND
37 SPI_CS1 GPIO6 REF_CLK_O N/A Internally connect
10K pull-down
resistance to GND,
default as SPI_CS1
38 SPI_CS0 GPIO10 N/A N/A Default as
SPI_CS0，used by
system for flash
control, can be
used for flash
burning
39 SPI_MOSI GPIO8 N/A N/A Internally connect
10K pull-down
resistance to GND,
default as
SPI_MOSI
40 SPI_CLK GPIO7 N/A N/A Internally connect
10K pull-up
resistance to 3.3V,
default as SPI_CLK
41 SPI_MISO GPIO9 N/A N/A Default as
SPI_MISO
42 GPIO11 GPIO11 REF_CLK_O PERST_N Default as
REF_CLK_O
43 UART_RXD0 GPIO13 N/A N/A Default as
UART_RXD0，
system debug uart
port
44 UART_TXD0 GPIO12 N/A N/A Internally connect
10K pull-down
resistance to GND,
default as
UART_TXD0,
system debug uart
port
45 GND N/A N/A N/A GND
46 MDI_R_P0_P N/A N/A N/A Ethernet 0 receive