INA3221

SBOS576 – MAY 2012

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Critical Alert Channel 3 Limit Register (Address = 0Bh, Read/Write)

BIT

D15

D14

D13

D12

D11

D10

D9

D8

D7

D6

D5

D4

D3

D2

D1

D0

NAME

C3L12

C3L11

C3L10

C3L9

C3L8

C3L7

C3L6

C3L5

C3L4

C3L3

C3L2

C3L1

C3L0

—

—

—

POR

0

1

1

1

1

1

1

1

1

1

1

1

1

0

0

0

VALUE

This register contains the value used to compare to each shunt voltage conversion on channel 3 to detect fast

overcurrent events.

Warning Alert Channel 3 Limit Register (Address = 0Ch, Read/Write)

BIT

D15

D14

D13

D12

D11

D10

D9

D8

D7

D6

D5

D4

D3

D2

D1

D0

NAME

W3L12

W3L11

W3L10

W3L9

W3L8

W3L7

W3L6

W3L5

W3L4

W3L3

W3L2

W3L1

W3L0

—

—

—

POR

0

1

1

1

1

1

1

1

1

1

1

1

1

0

0

0

VALUE

This register contains the value used to compare to the averaged shunt voltage value of channel 3 to detect a

longer duration overcurrent event.

Shunt Voltage Sum Register (Address = 0Dh, Read-Only)

BIT

D15

D14

D13

D12

D11

D10

D9

D8

D7

D6

D5

D4

D3

D2

D1

D0

NAME

SIGN

SV13

SV12

SV11

SV10

SV9

SV8

SV7

SV6

SV5

SV4

SV3

SV2

SV1

SV0

—

POR

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

VALUE

This register contains the sum of the single conversion shunt voltages of the selected channels based on the

summation control bits 12, 13, and 14 in the Mask/Enable Register.

This register is updated with the most recent sum following each complete cycle of all selected channels. The

Shunt Voltage Sum Register LSB value is 40 µV.

Shunt Voltage Sum Limit Register (Address = 0Eh, Read/Write)

BIT

D15

D14

D13

D12

D11

D10

D9

D8

D7

D6

D5

D4

D3

D2

D1

D0

NAME

SIGN

SVL13

SVL12

SVL11

SVL10

SVL9

SVL8

SVL7

SVL6

SVL5

SVL4

SVL3

SVL2

SVL1

SVL0

—

POR

0

1

1

1

1

1

1

1

1

1

1

1

1

1

1

0

VALUE

This register contains the value used to compare the Shunt Voltage following each completed cycle of all

selected channels to detect for system overcurrent events. The Shunt Voltage Sum Limit Register LSB value is

40 µV.

26

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