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CPC309 Intel Atom D510-based SBC
Specification
6.2 Work with WDT2 Watchdog Timer
The WDT2 watchdog timer is located in the Super IO SMSC3114 microchip. It has more
settings than the WDT1 watchdog timer. Four registers in the module input/output space are
used for its configuring. The purposes and addresses of those registers are provided in the
table below.
Table 6-2: WDT2 Watchdog Timer Control Registers
6.3 Discrete Input/Output Port Programming
The discrete input/output port is implemented on the PCA9538 (NXP) input/output port
microchip. This microchip is located on the SMBus bus and has the following address: E4h.
The microchip has 4 registers for port control. The purposes of these registered are described
below.