MCP19124 datasheet(59/236 Pages) MICROCHIP

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 2016 Microchip Technology Inc.

DS20005619A-page 59

MCP19124/5

9.0

DEVICE CALIBRATION

Read-only memory locations 2080h through 208Fh

contain factory calibration data. Refer to Section 20.0

“Flash Program Memory Control” for information on

how to read from these memory locations.

9.1

Calibration Word 1

Calibration Word 1 is at memory location 2080h and

contains the calibration bits for the Transconductance

Gm trim for both the current regulation error amplifier

and the voltage regulation error amplifier. The

CGM<3:0> bits set the trim for the Transconductance

current loop error amp (EA1). The VGM<3:0> bits set

the trim for the transconductance voltage loop error

amplifier (EA2). Firmware must read these values and

copy into the CGMVGMCAL Special Function Register

located in Bank 3 at 197h.

CALWD1: CALIBRATION WORD 1 REGISTER

U-0

—

bit 13

bit 8

R/P-1

CGM3

CGM2

CGM1

CGM0

VGM3

VGM2

VGM1

VGM0

bit 7

bit 0

Legend:

R = Readable bit

P = Programmable bit

U = Unimplemented bit, read as ‘0’

-n = Value at POR

‘1’

= Bit is set

‘0’

= Bit is cleared

x = Bit is unknown

bit 13-8

Unimplemented: Read as ‘0’

bit 7-4

CGM<3:0>: Gm Adjust for the Current Error Amplifier (EA1)

bit 3-0

VGM<3:0>: Gm Adjust for the Voltage Error Amplifier (EA2)

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