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Chapter 3 Hardware

32 Reference Manual CoreModule 745

Battery

Table 3-17 lists the pin signals of the External Battery Input header for backup CMOS RAM and RTC (Real

Time Clock), which uses 2 pins, single row, with 0.049" (1.25mm) pitch.

Note: The shaded table cells denote power or ground.

Ethernet External LED

This header provides signals for an external LED that indicates Ethernet links and activity using a single row

of 4 pins with 0.049" (1.25mm) pitch.

Note: The shaded table cell denotes power.

Miscellaneous

SSD (Solid State Drive)

The CoreModule 745 provides a standard SSD, which is a storage IC soldered directly onto the board. For

more information, refer to the SSD data sheet: http://www.greenliant.com/products/?inode=46780

Real Time Clock (RTC)

The CoreModule 745 contains a Real Time Clock (RTC). The RTC can be backed up with a battery. If the

battery is not present, the board BIOS has a battery-less boot feature to complete the boot process.

Table 3-17. External Battery Input Header (J6)

Pin # Signal Description

VBAT_EXT +3.0 volts DC

GND Ground

Table 3-18. Ethernet External LED Pin Signals (J11)

Pin # Signal Description

V3.3_CONN +3 volts – Provides +3 volts to external LED (Pins 1-2 for Green

LED)

2 ETH_ACT_LED Ethernet Activity

3 ETH_LINK100_LED Fast Ethernet Link with +3 volts power (Pins 3-4 for Bi-Color

LED)

4 ETH_LINK1000_LED Gigabit Ethernet Link

1 2 ... 33 34 35 36 37 38 39 40 41 42 43 ... 55 56

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