IEI Integration NOVA-PV-D4251_D5251 v1.10 - Manual (Page 70)

NOVA-PV-D5251/D4251 5.25" SBC
Page 54
Pin Description
3 SMB_CLK
4 +5V
Table 3-28: SMBus Connector Pinouts
3.2.27 SPI Flash Connector
CN Label: JSPI1
CN Type: 8-pin wafer (2x4)
CN Location: See Figure 3-29
CN Pinouts: See Table 3-29
The 8-pin SPI Flash connector is used to flash the BIOS.
Figure 3-29: SPI Flash Connector Location
Pin Description Pin Description
1 SPI_VCC (+5V) 2 GND
3 SPI_CS#0 4 SPI_CLK
5 SPI_SO0 6 SPI_SI
7 N/C 8 N/C
Table 3-29: SPI Flash Connector Pinouts