The Espruino can communicate with the INA3221 via I2C.
| SBOS576A – MAY 2012 – REVISED JUNE 2013 | www.ti.com | ||||||||||||||||
| REGISTER DETAILS | |||||||||||||||||
| All 16-bit INA3221 registers are two 8-bit bytes via the I2C interface. Table 2 shows a register map for the INA3221. | |||||||||||||||||
| Table 2. Register Map | |||||||||||||||||
| REGISTER | ADDRESS (Hex) |
D15 | D14 | D13 | D12 | D11 | D10 | D9 | D8 | D7 | D6 | D5 | D4 | D3 | D2 | D1 | D0 |
| Configuration | 00 | RST | CH1en | CH2en | CH3en | AVG2 | AVG1 | AVG0 | VBUSCT2 | VBUSCT1 | VBUSCT0 | VSH CT2 | VSH CT1 | VSH CT0 | MODE3 | MODE2 | MODE1 |
| Channel 1 Shunt Voltage | 01 | SIGN | SD11 | SD10 | SD9 | SD8 | SD7 | SD6 | SD5 | SD4 | SD3 | SD2 | SD1 | SD0 | — | — | — |
| Channel 1 Bus Voltage | 02 | SIGN | BD11 | BD10 | BD9 | BD8 | BD7 | BD6 | BD5 | BD4 | BD3 | BD2 | BD1 | BD0 | — | — | — |
| Channel 2 Shunt Voltage | 03 | SIGN | SD11 | SD10 | SD9 | SD8 | SD7 | SD6 | SD5 | SD4 | SD3 | SD2 | SD1 | SD0 | — | — | — |
| Channel 2 Bus Voltage | 04 | SIGN | BD11 | BD10 | BD9 | BD8 | BD7 | BD6 | BD5 | BD4 | BD3 | BD2 | BD1 | BD0 | — | — | — |
| Channel 3 Shunt Voltage | 05 | SIGN | SD11 | SD10 | SD9 | SD8 | SD7 | SD6 | SD5 | SD4 | SD3 | SD2 | SD1 | SD0 | — | — | — |
| Channel 3 Bus Voltage | 06 | SIGN | BD11 | BD10 | BD9 | BD8 | BD7 | BD6 | BD5 | BD4 | BD3 | BD2 | BD1 | BD0 | — | — | — |
| Critical Alert Channel 1 Limit |
07 | C1L12 | C1L11 | C1L10 | C1L9 | C1L8 | C1L7 | C1L6 | C1L5 | C1L4 | C1L3 | C1L2 | C1L1 | C1L0 | — | — | — |
| Warning Alert Channel 1 Limit |
08 | W1L12 | W1L11 | W1L10 | W1L9 | W1L8 | W1L7 | W1L6 | W1L5 | W1L4 | W1L3 | W1L2 | W1L1 | W1L0 | — | — | — |
| Critical Alert Channel 2 Limit |
09 | C2L12 | C2L11 | C2L10 | C2L9 | C2L8 | C2L7 | C2L6 | C2L5 | C2L4 | C2L3 | C2L2 | C2L1 | C2L0 | — | — | — |
| Warning Alert Channel 2 Limit |
0A | W2L12 | W2L11 | W2L10 | W2L9 | W2L8 | W2L7 | W2L6 | W2L5 | W2L4 | W2L3 | W2L2 | W2L1 | W2L0 | — | — | — |
| Critical Alert Channel 3 Limit |
0B | C3L12 | C3L11 | C3L10 | C3L9 | C3L8 | C3L7 | C3L6 | C3L5 | C3L4 | C3L3 | C3L2 | C3L1 | C3L0 | — | — | — |
| Warning Alert Channel 3 Limit |
0C | W3L12 | W3L11 | W3L10 | W3L9 | W3L8 | W3L7 | W3L6 | W3L5 | W3L4 | W3L3 | W3L2 | W3L1 | W3L0 | — | — | — |
| Shunt Voltage Sum | 0D | SIGN | SV13 | SV12 | SV11 | SV10 | SV9 | SV8 | SV7 | SV6 | SV5 | SV4 | SV3 | SV2 | SV1 | SV0 | — |
| Shunt Voltage Sum Limit | 0E | SIGN | SVL13 | SVL12 | SVL11 | SVL10 | SVL9 | SVL8 | SVL7 | SVL6 | SVL5 | SVL4 | SVL3 | SVL2 | SVL1 | SVL0 | — |
| Mask/Enable | 0F | — | SCC1 | SCC2 | SCC3 | WEN | CEN | CF1 | CF2 | CF3 | SF | WF1 | WF2 | WF3 | PVF | TCF | CVRF |
| Power Valid Upper Limit | 10 | PVU12 | PVU11 | PVU10 | PVU9 | PVU8 | PVU7 | PVU6 | PVU5 | PVU4 | PVU3 | PVU2 | PVU1 | PVU0 | — | — | — |
| Power Valid Lower Limit | 11 | PVL12 | PVL11 | PVL10 | PVL9 | PVL8 | PVL7 | PVL6 | PVL5 | PVL4 | PVL3 | PVL2 | PVL1 | PVL0 | — | — | — |
| Manufacturer ID | FE | 0 | 1 | 0 | 1 | 0 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 1 | 0 | 0 | 1 |
| Die ID Register | FF | 0 | 0 | 1 | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 |
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| Product Folder Links: INA3221 | |||||||||||||||||