IEI Integration NANO-PV-D4251_N4551_D5251 - Manual (Page 46)

NANO-PV-D4251/N4551/D5251 EPIC SBC
Page 33
The SMBus Connector provides a connection to a SMBus (System Management Bus)
device.
Figure 3-20: SMBus Connector Locations
PIN NO. DESCRIPTION
1 GND
2 SMBDATA
3 SMBCLK
4 VCC5S
Table 3-21: SMBus Connector Pinouts
3.2.20 SPI Flash Connector
CN Label: SPI1
CN Type: 8-pin header (2x4)
CN Location: See Figure 3-21
CN Pinouts: See Table 3-22
The 8-pin SPI Flash connector is used to flash the BIOS.
Figure 3-21: SPI Flash Connector