Device
and operation
CPC307
C P C 3 0 7 U s e r M a n u a l
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- real-time clock;
- CMOS memory for storing settings;
- In-built Flash memory for BIOS storage;
- two programmable watchdog timers.
Figure 4. 8.Block diagram of Vortex86DX SoC
4.3.2 DDR2 Memory
Two DDR2 SDRAM chips with a total size of 256 Mbytes are soldered on the module, working at
266 MHz (for module versions older than 4.x) or 333 MHz (for module versions 4.x). Installation of
memory expansion modules is not provided. The maximum possible memory size is 256 Mbytes.
4.3.3 IDE interface
Two external IDE devices, such as HDD, Compact Flash adapter, etc., can be connected to the
module. Connection is carried out to the XP13 connector where the Primary IDE interface is
routed. UDMA2 mode is supported.
The CPC307-04 version is capable of connecting two microSD memory cards; see paragraph 4.3.4
MicroSD for a detailed description.
If the soldered ATA Flash Disk controller is enabled, one additional external IDE-device can be
connected to the module (Table 4.8).
If the soldered ATA Flash Disk controller is prohibited, two additional external IDE devices can be
connected to the module (par. 4.3.5 ATA Flash disk controller, par. 4.3.20 Configuration jumpers).
