PAC1721 datasheet(45/92 Pages) MICROCHIP

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DS-20007088A-page 45

PAC1721

VBUS_AVG (ADDRESS 06H)

VSENSE_AVG (ADDRESS 07H)

R-0

VBUS_AVG[11:4]

bit 15

bit 8

R-0

U-0

VBUS_AVG[3:0]

–

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 15:4

VBUS_AVG[11:0]: This register contains the rolling average of VBUS measurements (samples).

The rolling average is a 12-bit unsigned number, unless VBUS is configured to have a bipolar range. In

that case, the rolling average is stored using 11 bits and one sign bit (2’s complement).

Refresh or Refresh_V commands do not reset this register.

When reading register VBUS_AVG, PAC1721 NACKs the register Read command until the internal

buffer is full (valid average value).

Note:

During a Bulk Read action, PAC1721 does not NACK the incorrect value.

bit 3:0

Unimplemented at this time. Always reads 0.

R-0

VSENSE_AVG[11:4]

bit 15

bit 8

R-0

U-0

VSENSE_AVG[3:0]

–

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 15:4

VSENSE_AVG[11:0]: This register contains the rolling average of VSENSE measurements (samples).

The rolling average is a 12-bit unsigned number, unless VSENSE is configured to have a bipolar range.

In that case, the rolling average is stored using 11 bits and one sign bit (2’s complement).

Refresh or Refresh_V commands do not reset this register.

When reading register VSENSE_AVG, PAC1721 NACKs the register Read command until the internal

buffer is full (valid average value).

Note:

During a Bulk Read action, PAC1721 does not NACK the incorrect value.

bit 3:0

Unimplemented at this time. Always reads 0.

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