Datasheet

78M6610+PSU Data Sheet
3 Data Access and Configurability
The 78M6610+PSU has several user accessible registers that are used for configuring the device and to
access results data. These registers are read (output), write (input), or read/write type, such as the
Command register. These registers are accessible through the serial interfaces available on-chip (UART,
SPI, and I
2
C).
Warning
Writing to reserved registers or to unspecified memory locations could result in
malfunctions or unexpected results.
Note
The documented address locations apply to the UART interface. For SPI or I
2
C addressing,
one must divide the address by 3.
3.1 Register Descriptions
Data Types
The input and output registers have different data types, depending on their assignment and functions.
Table 3-1
shows the different data types.
The notation used indicates whether the number is signed, unsigned, or bit-mapped and the location of
the binary point.
U Indicates an unsigned value.
S Indicates a signed value.
. If present, indicates a fixed point number
nn If to the right of the decimal, indicates the number of bits to the right of the binary point.
If no decimal is present, indicates the total bits in the number.
Example: S.21
Bit Position
23
22
21
.
20
19
18
17
…
2
1
0
S(-2
2
)
2
1
2
0
2
-1
2
-2
2
-3
2
-4
…
2
-19
2
-20
2
-21
22 Rev 3