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ZHCSL05C October 2019 – October 2023 TPS65313-Q1

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机械数据 (封装 | 引脚)

RWG|40
- MPQF420

散热焊盘机械数据 (封装 | 引脚)

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11.9.10.5.1 WD Initialization Events

Table 11-13 lists the multiple events that initialize the WD function and details on what gets initialized by each event.

Table 11-13 WD Function Initialization

IMPACT	INITIALIZATION-TRIGGERING EVENT
IMPACT	RESET TO DIAGNOSTIC STATE TRANSITION	CHANGE OF THE WD_CFG BIT	CHANGE OF WDT_WINx_CFG OR WD_Q&A_CFG REG	DIAGNOSTIC TO ACTIVE OR SAFE TO DIAGNOSTIC STATE TRANSITION	LBIST RUN COMPLETION
A new WD cycle start	YES	YES	YES	YES	YES
WD_ANSW_CNT[1:0]⁽¹⁾	YES	YES	YES	YES	YES
The WD status flags⁽²⁾	YES	YES	YES	YES	YES
WD_CFG_CHG⁽³⁾	NO	YES	YES	NO	NO
WDT_QUESTION_VALUE⁽⁴⁾	YES	YES	N/A⁽¹⁰⁾	NO	YES
WDT_Q&A_CFG register⁽⁴⁾	YES	YES	N/A⁽¹⁰⁾	NO	NO
WDT_WIN1_CFG and WDT_WIN2_CFG	YES	YES	N/A⁽¹⁰⁾	NO	NO
WD_FAIL_CNT[3:0]	YES⁽⁵⁾	YES⁽⁵⁾	YES⁽⁶⁾	YES⁽⁷⁾	YES⁽⁷⁾
WD_FC_ENDRV_TH[3:0]⁽⁵⁾	YES	YES	NO	NO	NO
WD_FC_RST_TH[3:0]⁽⁸⁾	YES	YES	NO	NO	NO
WD_CFG⁽⁹⁾	YES	N/A⁽¹⁰⁾	NO	NO	NO

(1) This bit is initialized to 0x3 when the WD_CFG bit is set to 0b (WD Q&A multi-answer mode) and to 0x01 when the WD_CFG bit is set to 1 (WD Q&A single-answer mode).

(2) The TIME_OUT, ANSW_ERR, ANSW_EARLY, and SEQ_ERR bits in the WDT_STATUS register and the WD_FAIL bit in the SAFETY_ERR_STAT2 register are all initialized to 0x0.

(3) A YES for this bit means that it is set to 1b.

(4) Along with these registers, the WD question-generation engine is also initialized.

(5) This bit is initialized to 0x5 which is the initial value of the WD_FC_ENDRV_TH[3:0] value.

(6) Increments by 1.

(7) This bit is initialized to the current WD_FC_ENDRV_TH[3:0] value.

(8) This bit is Initialized to 0xF.

(9) This bit is Initialized to 0x0.

(10) The bits or registers will change to reflect the actual values written in each initialization-triggering event.