Advantech FWA-1320, Руководство пользователя

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FWA-1320 User Manual 24
Figure 2.10 RTC battery
Please refer to section 3.5.2 reg. replacing the coin battery.
2. Serial Ports
The SoC integrates two 16C550 compliant UARTs which are mapped to the default
resources:
Please note that the UARTs in the SoC do not support any UART handshake and sta-
tus/control signals but RXD, TXD, only.
3. HPET
The High Precision Event Timer (HPET) provides a set of timers that are used by the
operating system for timing events. One timer block is implemented, containing one
counter and three timers. It complies with the IA-PC HPET (High Precision Event
Timers) Specification, Revision 1.0 available from intel.
4. SMBus
The PCH integrates two SMBus controllers. The first one is used as interface to
external devices such as EEPROMs, the hardware monitor; the second controller is
not used on the FWA-1320.
Table 2.13: COM Ports
UART Port Resources Implementation
0 COM1 IO Range 0x3f8 -0x3ff, IRQ4 Console port
1 COM2 IO Range 0x2f7 – 0x2ff, IRQ3 Interface to LCM
Table 2.14: SMBus Devices
SMBus Adr, Device Function
0 0x5C/5D NCT7904D Hardware monitor chip
0 0xA0/A1 DIMM A0 SPD SPD EEPROM