Maxim Integrated 78M6631 - Manual (Page 6)

78M6631 Firmware Description Document UG_6631_078
6 Rev 2
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Figure 2. Simplified Connection Diagram of a 3-Phase Delta System
All measurement calculations are computed by the 78M6631 and accessible through serial interfaces:
UART0 on the TX and RX pins and the Serial Peripheral Interface (SPI).
On the UART, the CLI (Command Line Interface) handles the serial communications .The CLI provides
access to internal data and allows issuing commands through the serial port. Section 3 provides details
on serial port default configuration and Section 4 describes the CLI commands.
Note that the firmware does not support I 2 C, RTC (real-time clock), and battery modes.