ZHCSQY3 march 2023 TPS546D24S
PRODUCTION DATA
| CMD Address | FBh |
| Write Transaction: | Write Word |
| Read Transaction: | Read Word |
| Format: | Unsigned Binary (2 bytes) |
| Phased: | No |
| NVM Back-up: | EEPROM |
| Updates: | At Boot-up |
EXT_WRITE_PROTECT provides the user with greater resolution to Write Protect features than the Standard PMBus Function. Each bit in the EXT_WRITE_PROTECT provides individual and independent WRITE_PROTECTION.
| 15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 |
| RW | RW | RW | RW | RW | RW | RW | RW |
| HWP | WP | TRIM | VOUT | VOF | WN | ITF | MAR |
| 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
| RW | RW | RW | RW | RW | RW | RW | RW |
| OP | CFG | VIN | SEQ | DAT | BOT | PSK | STR |
| LEGEND: R/W = Read/Write; R = Read only |
Bit | Field | Access | Reset | Description |
|---|---|---|---|---|
15 | HWP | RW | NVM | Command List: EXT_WRITE_PROTECT (This command), PASSKEY 0b: Commands are Writable unless: a. EXT_WRITE_PROTECT is Write Protected by PASSKEY b. PASSKEY is Write Protected by EXT_WRITE_PROTECT[1] 1b: Commands are Read Only (if stored to NVM, this will permanently lock EXT_WRITE_PROTECT) |
| 14 | WP | RW | NVM | Command List: WRITE_PROTECT (Standard PMBus Command) 0b: Commands are Writable (No other command controls write access to WRITE_PROTECT 1b: Commands are Read Only |
| 13 | TRIM | RW | NVM | Command List: VOUT_TRIM, VOUT_SCALE_LOOP, IOUT_CAL_GAIN, IOUT_CAL_OFFSET 0b: Commands are Writable unless Write Protected by WRITE_PROTECT 1b: Commands are Read Only |
| 12 | VOUT | RW | NVM | Command List: VOUT_MODE, VOUT_COMMAND 0b: Commands are Writable unless Write Protected by WRITE_PROTECT 1b: Commands are Read Only |
| 11 | VOF | RW | NVM | Command List: VOUT_MAX, VOUT_OV_FAULT_LIMIT, VOUT_OV_FAULT_RESPONSE,
VOUT_UV_FAULT_LIMIT, VOUT_UV_FAULT_RESPONSE, VOUT_MIN 0b: Commands are Writable unless Write Protected by WRITE_PROTECT 1b: Commands are Read Only |
| 10 | WN | RW | NVM | Command List: VOUT_OV_WARN_LIMIT, VOUT_UV_WARN_LIMIT, IOUT_OC_WARN_LIMIT,
OT_WARN_LIMIT, SMBALERT_MASK 0b: Commands are Writable unless Write Protected by WRITE_PROTECT 1b: Commands are Read Only |
| 9 | ITF | RW | NVM | Command List: IOUT_OC_FAULT_LIMIT, IOUT_OC_FAULT_RESPONSE, OT_FAULT_LIMIT,
OT_FAULT_RESPONSE, SIMULATE_FAULTS 0b: Commands are Writable unless Write Protected by WRITE_PROTECT 1b: Commands are Read Only |
| 8 | MAR | RW | NVM | Command List: VOUT_MARGIN_HIGH, VOUT_MARGIN_LOW, VOUT_TRANSITION_RATE 0b: Commands are Writable unless Write Protected by WRITE_PROTECT 1b: Commands are Read Only |
| 7 | OP | RW | NVM | Command List: OPERATION 0b: Commands are Writable unless Write Protected by WRITE_PROTECT 1b: Commands are Read Only |
| 6 | CFG | RW | NVM | Command List: FREQUENCY_SWITCH, INTERLEAVE, COMPENSATION_CONFIG,
TRANSIENT_REDUCTION_CONFIG, TELEMETRY_CONFIG, POWER_STAGE_CONFIG, PGOOD_CONFIG,
SYNC_CONFIG, MISC_OPTIONS, STACK_CONFIG 0b: Commands are Writable unless Write Protected by WRITE_PROTECT 1b: Commands are Read Only |
| 5 | VIN | RW | NVM | Command List: VIN_UV_WARN_LIMIT, VIN_OV_FAULT_LIMIT, VIN_OV_WARN_LIMIT,
VIN_OV_FAULT_RESPONSE 0b: Commands are Writable unless Write Protected by WRITE_PROTECT 1b: Commands are Read Only |
| 4 | SEQ | RW | NVM | Command List: TON_DELAY, TON_RISE, TON_MAX_FAULT_LIMIT, TON_MAX_FAULT_RESPONSE,
TOFF_DELAY, TOFF_FALL, and ON_OFF_CONFIG, VIN_ON, VIN_OFF 0b: Commands are Writable unless Write Protected by WRITE_PROTECT 1b: Commands are Read Only |
| 3 | DAT | RW | NVM | Command List: MFR_ID, MFR_MODEL, MFE_REVISION, MFR_SERIAL 0b: Commands are Writable unless Write Protected by WRITE_PROTECT 1b: Commands are Read Only |
| 2 | BOT | RW | NVM | Command List: PIN_DETECT_OVERRIDE, PMBUS_ADDRESS 0b: Command are Writable unless Read Only from WRITE_PROTECT 1b: Commands are Read Only |
| 1 | PSK | RW | NVM | Command List: PASSKEY 0b: Commands are Writable unless Write Protected by WRITE_PROTECT 1b: Commands are Read Only Note: Because PASSKEY write
protects EXT_WRITE_PROTECT when PASSKEY != 0000h, setting this bit when PASSKEY !=
0000h and storing to NVM permanently locks access to EXT_WRITE_PROTECT. Setting
this bit when PASSKEY is set to 0000h prevents the programming of a PASSKEY
value. |
| 0 | STR | RW | NVM | Command List: STORE_USER_ALL 0b @ Power On Reset: Commands are Writable unless Read Only from WRITE_PROTECT or PASSKEY 0b @ RESTORE: Commands are Writable unless Read Only from WRITE_PROTECT or PASSKEY 0b at All other Times: Commands are Writable unless Read Only from WRITE_PROTECT or PASSKEY 1b @ Power On Reset: Commands are Read Only 1b @ RESTORE: Commands are Read Only |