ZHCSNL3A December 2021 – November 2023 TPSM8D6C24
PRODUCTION DATA
| CMD Address | ECh |
| Write Transaction: | Write Word |
| Read Transaction: | Read Word |
| Format: | Unsigned Word |
| Phased: | No |
| NVM Backup: | EEPROM or Pin Detect |
| Updates: | Conversion Disable: see below. Conversion Enable: Read-Only |
| 15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 |
| R | R | R | R | R | R | R | R |
| Reserved 0000h | |||||||
| 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
| R | R | R | R | RW | RW | RW | RW |
| BCX_START | BCX_STOP | ||||||
| LEGEND: R/W = Read/Write; R = Read only |
| Bit | Field | Access | Reset | Description |
|---|---|---|---|---|
| 15:8 | Not supported | R | 0000h | Reserved. Equal to 0000h. |
| 7:4 | BCX_START | R | 0000b | BCX_Address for Stack Loop Controller. Equal to 0000b. |
| 3:0 | BCX_STOP | RW | NVM | 0000b: Standalone, single-phase 0001b: One loop follower, 2-phase 0010b: Two loop followers, 3-phase 0011b: Three loop followers, 4-phase Other: Not supported/invalid |
Attempts to write (ECh) MFR_SPECIFIC_28 (STACK_CONFIG) to any value outside those specified as valid are considered invalid or unsupported data and cause TPSM8D6C24 to respond by flagging the appropriate status bits and notifying the host according to the PMBus 1.3.1 Part II specification section 10.9.3.
(ECh) MFR_SPECIFIC_28 (STACK_CONFIG) controls the operation of the BCX_CLK and BCX_DAT pins. If the TPSM8D6C24 powers up with (ECh) MFR_SPECIFIC_28 (STACK_CONFIG) equal to 0000h (standalone) the BCX_CLK and BCX_DAT functionality is disabled. Changing (ECh) MFR_SPECIFIC_28 (STACK_CONFIG) to a multi-phase configuration does not enable BCX communication until the next power up. To program loop follower devices connected to a loop controller device that was powered up with (ECh) MFR_SPECIFIC_28 (STACK_CONFIG) = 0000h, program (EEh) MFR_SPECIFIC_30 (PIN_DETECT_OVERRIDE) to default (ECh) MFR_SPECIFIC_28 (STACK_CONFIG) to NVM by setting bit 12 = 0b, (15h) STORE_USER_ALL and cycle AVIN power below its UVLO prior to programing other commands in order to enable BCX communication and allow the loop controller device to relay commands to the loop follower devices.
(ECh) MFR_SPECIFIC_28 (STACK_CONFIG) can be changed from 0001h to 0003h to 0000h – 0003h live without requiring an AVIN power cycle since the BCX_CLK and BCX_DAT function is enabled at power up.