MCP39F511N datasheet(20/61 Pages) MICROCHIP

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 2015-2018 Microchip Technology Inc.

DS20005473B-page 20

MCP39F511N

4.6.9

AUTO-CALIBRATE REACTIVE

POWER GAIN (0x7A)

The Auto-Calibrate Reactive Gain command

initiates a single-point calibration to match the

measured Reactive power to the target Reactive

power. The instruction parameter for this command

selects if you are calibrating channel 1, 2, or both. Bit 0

corresponds to channel 1 and bit 1 corresponds to

channel 2. This is typically done at PF = 0.5. See

section Section 9.0 “MCP39F511N Calibration” for

more information on device calibration.

4.6.10

AUTO-CALIBRATE FREQUENCY

(0x76)

For applications not using an external crystal and

running the MCP39F511N off the internal oscillator, a

gain calibration to the line frequency indication is

required. The Gain Line Frequency register is set such

that the frequency indication matches what is set in the

Line Frequency Reference register. See Section 9.0

“MCP39F511N Calibration” for more information on

device calibration.

4.7

Notation for Register Types

The following notation has been adopted for describing

the various registers used in the MCP39F511N:

TABLE 4-12:

SHORT-HAND NOTATION

FOR REGISTER TYPES

Notation

Description

u64

Unsigned, 64-bit register

u32

Unsigned, 32-bit register

s32

Signed, 32-bit register

u16

Unsigned, 16-bit register

s16

Signed, 16-bit register

b32

32-bit register containing discrete

Boolean bit settings

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