I 2 C Register Map - Analog Devices LINEAR LT8491 Manual

2
I C REGISTER MAP
Summary Table
MEMORY
REGION REGISTER NAME
Telemetry TELE_TBAT
TELE_POUT
TELE_PIN
TELE_EFF
TELE_IOUT
TELE_IIN
TELE_VBAT
TELE_VIN
TELE_VINR
Status STAT_CHARGER
STAT_SYSTEM
STAT_SUPPLY
STAT_TS0_REMAIN
STAT_TS1_REMAIN
STAT_TS2_REMAIN
STAT_TS3_REMAIN
STAT_CHRG_FAULTS
STAT_VERSION
Reserved
STAT_BOOT_CRC
STAT_CFG_CRC
Control CTRL_WRT_TO_BOOT
CTRL_EE_WRT_EN
CTRL_HALT_STARTUP
CTRL_CHRG_EN
CTRL_RESTART_CHIP
CTRL_RESET_FLAG
CTRL_UPDATE_TELEM
Reserved
2
I C REG REF
ADDR SIZE PG. BRIEF REG. DESCRIPTION
0x00 Word 30 Battery temperature
0x02 Word Output power
0x04 Word Input power
0x06 Word Charger efficiency
0x08 Word Output current
0x0A Word Input current
0x0C Word Battery voltage
0x0E Word Input voltage measured from the
FBIN pin.
0x10 Word Input voltage measured from the
VINR pin.
0x12 Byte 34 Charger status
0x13 Byte System status
0x14 Byte Input supply status
0x15 Byte Stage 0 limit timer
0x16 Byte Stage 1 limit timer
0x17 Byte Stage 2 limit timer
0x18 Byte Stage 3 limit timer
0x19 Byte Charging fault sources
0x1A Byte LT8491 version code
0x1B Byte Reserved
0x1C Word Calculated boot region CRC
0x1E Word Calculated configuration CRC
0x20 Byte 39 Write to EEPROM
0x21 Byte Enable EEPROM writes
0x22 Byte 40 Halt startup CRC checks
0x23 Byte Enable/disable charger
0x24 Byte Restart the LT8491
0x25 Byte Reset flag
0x26 Byte Measure and update telemetry
when charging logic is off
0x27 Byte Reserved
For more information
DEFAULT
VALUE DESCRIPTION OF DEFAULT VALUE
0x7FFF Indicates that the value has not been
measured yet.
0x0000 Charger not on yet.
0x0000 Charger not on yet.
0x0000 Charger not on yet.
0x0000 Charger not on yet.
0x0000 Charger not on yet.
0x0000 Indicates that the value has not been
calculated yet.
0x0000 Indicates that the value has not been
calculated yet.
0xFFFF Indicates that the value has not been
calculated yet.
0x00 Charging off.
- Indicates present system status.
- Indicates present supply status.
0xFF No Stage 0 time limit.
0xFF No Stage 1 time limit.
0xFF No Stage 2 time limit.
0xFF No Stage 3 time limit.
0x00 No faults.
0x00 -
- Reserved
- Depends on boot region contents.
- Depends on boot region contents.
0x00 EEPROM writing not initiated.
0x00 EEPROM writes not enabled.
0x00 Always returns 0x00 on reads.
- See Startup Sequence section.
0x00 Always returns 0x00 on reads.
0x01 Indicates that LT8491 has been reset.
0x00 Telemetry update not initiated.
- Reserved
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LT8491
Rev. 0
27