Shenzhen Hi-Link Electronic Co., Ltd.
Manual
page 13 / 15
HLK-7628D
Appendix 1:
Module chip expandable function comparison table (OpenWrt)
Name
(Function 1) Function 2 Function 3 Function 4 GPIO#
Remarks
SPI_CS0
GPIO#10 SPI bus chip select signal 0
REF_CLK0
GPIO#38
Reference clock output
PERST_N
GPIO#36 PCIe device reset output
WDT_RST_N
GPIO#37
Watchdog timeout reset
EPHY_LED4
JTAG_RST
_N
GPIO#39 PORT4 LED, Active low
EPHY_LED3 JTAG_CLK
GPIO#40 PORT3 LED,Active low
EPHY_LED2 JTAG_TMS
GPIO#41 PORT2 LED, Active low
EPHY_LED1 JTAG_TDI
GPIO#42 PORT1 LED, Active low
EPHY_LED0 JTAG_TDO
GPIO#43 PORT0 LED, Active low
PORST_N
CPU reset, Active low
UART_TXD
1
PWM_CH0 GPIO#45
Serial port 1 data
transmission
UART_RXD1
PWM_CH1 GPIO#46 Serial port 1 data reception
I2S_SDI
PCMDRX
GPIO#0
I2S data input
I2S_SDO
PCMDTX
GPIO#1
I2S data output
I2S_WS
PCMCLK
GPIO#2
I2S channel selection,
0: left; 1: right
I2S_CLK
PCMFS
GPIO#3
I2S data bit clock
I2C_SCLK
GPIO#4
I2C bus clock
I2C_SD
GPIO#5
I2C bus data
SPI_CS1
GPIO#6 SPI bus chip select signal 1
SPI_CLK
GPIO#7
SPI bus clock signal
SPI_MISO
GPIO#9
SPI bus data master in and
slave out
SPI_MOSI
GPIO#8
SPI bus data master out and
slave in
GPIO0
GPIO#11
Universal input and output interface
