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INA3221AIRGV Datasheet(PDF) 28 Page - Texas Instruments |
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INA3221AIRGV Datasheet(HTML) 28 Page - Texas Instruments |
28 / 36 page ![]() INA3221 SBOS576 – MAY 2012 www.ti.com BIT D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 POR 0 0 1 0 0 1 1 1 0 0 0 1 0 0 0 0 VALUE This register contains the value used to determine if the Power Valid conditions are met. The Power Valid condition is reached when all bus voltage channels exceed the value set in this limit register. When the Power Valid condition is met, the Power Valid Alert pin asserts high to indicate that the INA3221 has confirmed all bus voltage channels are above the Power Valid Upper Limit value. In order for the Power Valid conditions to be monitored, the bus measurements must be enabled through one of the corresponding MODE settings set in the Configuration Register. The Power Valid Upper Limit LSB value is 8 mV. Power Valid Lower Limit Register (Address = 11h, Read/Write)(1) BIT D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 NAME PVL12 PVL11 PVL10 PVL9 PVL8 PVL7 PVL6 PVL5 PVL4 PVL3 PVL2 PVL1 PVL0 — — — POR 0 0 1 0 0 0 1 1 0 0 1 0 1 0 0 0 VALUE (1) Power-on reset value is 2328h (9.000 V) This register contains the value used to determine if any of the bus voltage channels drops below the Power Valid Lower Limit when the Power Valid conditions are met. This limit contains the value used to compare all bus channel readings to ensure that all channels remain above the Power Valid Lower Limit, thus ensuring the Power Valid condition is maintained. If any bus voltage channel drops below the Power Valid Lower Limit, the Power Valid Alert pin is pulled low to indicate that the INA3221 detects a bus voltage reading below the Power Valid Lower Limit. In order for the Power Valid condition to be monitored, the bus measurements must be enabled through one of the corresponding MODE settings set in the Configuration Register. The Power Valid Lower Limit LSB value is 8 mV. Manufacturer ID Register (Address = FEh, Read) BIT D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 NAME 0 1 0 1 0 1 0 0 0 1 0 0 1 0 0 1 This register contains a factory-programmable identification value that identifies this device as being manufactured by Texas Instruments. This register distinguishes this device from other devices that are on the same I2C bus. The contents of this register are 5449h, or TI in Ascii. Die ID Register (Address = FFh, Read) BIT D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 NAME 0 0 1 1 0 0 1 0 0 0 1 0 0 0 0 0 This register contains a factory-programmable identification value that identifies this device as an INA3221. This register distinguishes this device from other devices that are on the same I2C bus. The Die ID for the INA3221 is 3220h. 28 Submit Documentation Feedback Copyright © 2012, Texas Instruments Incorporated Product Folder Link(s): INA3221 |
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