Cmos Battery Connector; Spi Flash Connector; Figure 16: Cmos Battery Connector Diagram; Figure 17: Spi Flash Connector Diagram - VIA Technologies EPIA-P910 User Manual

2.2.8. CMOS Battery Connector

The VIA EPIA-P910 is equipped with CMOS battery connector used for connecting the external cable
battery that provides power to the CMOS RAM. If disconnected all configurations in the CMOS RAM will
be reset to factory defaults. The CMOS battery connector is labeled as "BAT1". The pinouts of the CMOS
battery connector are shown below.

Figure 16: CMOS battery connector diagram

Pin
1
2

Table 15: CMOS battery connector pinouts

2.2.9. SPI Flash Connector

The VIA EPIA-P910 has one 8-pin SPI flash connector. The SPI (Serial Peripheral Interface) flash connector
is used to connect to the SPI BIOS programming fixture for updating the SPI flash ROM. The connector is
labeled as "J1". The pinouts of the SPI flash connector are shown below.

Figure 17: SPI flash connector diagram

Pin
1
2
3
4

Table 16: SPI flash connector pinouts

Signal
RTC_BAT
GND
Signal Pin
NC 5 MSPICLK
NC 6 MSPISSO
MSPIDO 7 GND
MSPIDI 8 SPIVCC
VIA EPIA-P910 User Manual
Signal
16