MCP39F511N datasheet(30/61 Pages) MICROCHIP

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 2015-2018 Microchip Technology Inc.

DS20005473B-page 30

MCP39F511N

6.2

Address Pointer Register

This unsigned 16-bit register contains the address to

which all read and write instructions occur. This register

is only written through the Set Address Pointer

command and is otherwise outside the writable range

of register addresses.

6.3

System Status Register

The System Status register is a read-only register and

can be used to detect the various states of pin levels as

defined in Register 6-1.

SYSTEM STATUS REGISTER

U-0

R-x

R-n

R-x

R-n

—

AC_STATUS

EVENT2

EVENT1

OVER-

POW2

OVERCURR2

bit 15

bit 8

R-n

SIGN_PR

_CH2

SIGN_PA_

CH2

SIGN_PR_C

SIGN_PA_C

OVERPOW1

OVER-

CURR1

VSURGE

VSAG

bit 7

bit 0

Legend:

R = Readable bit

W = Writable bit

U = Unimplemented bit, read as ‘0’

-n = Value at POR

‘1’ = Bit is set

‘0’ = Bit is cleared

x = Bit is unknown

bit 15-13

Unimplemented: Read as ‘0’

bit 12

AC_STATUS: AC Detection Status

= AC Detection failed.

= AC Detection successful.

bit 11

EVENT2: State of Event2 Detection algorithm. This bit is latched and must be cleared.

= Event 2 has occurred.

= Event 2 has not occurred.

bit 10

EVENT1: State of Event1 Detection algorithm. This bit is latched and must be cleared.

= Event 1 has occurred.

= Event 1 has not occurred.

bit 9

OVERPOW2: Over Power, channel 2. An over power event has occurred on channel 2.

= Over Power threshold has been broken

= Over Power threshold has not been broken

bit 8

OVERCURR2: Over Current, channel 2. An over current event has occurred on channel 2.

= Over current threshold has been broken

= Over current threshold has not been broken

bit 7

SIGN_PR_CH2: Sign of Reactive Power Channel 2 (inductive/capacitive state of the reactive power)

= Reactive Power is inductive and is in quadrants 1,2

= Reactive Power is capacitive and is in quadrants 3,4

bit 6

SIGN_PA_CH2: Sign of Active Power Channel 2 (import/export sign of active power)

= Active Power is positive (import) and is in quadrants 1,4

= Active Power is negative (export) and is in quadrants 2,3

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