MFS5600AMBAFES datasheet(78/118 Pages) NXP

78 / 118 page

NXP Semiconductors

FS5600

Automotive buck regulator and controller with voltage monitors and watchdog timer

Bit

Symbol

Description

00 — Max value is 8.

01 — Max value is 6.

10 — Max value is 4.

11 — Max value is 2.

Reset Condition — POR

12 to 11

WD_RFR_LIMIT[1:0]

Watchdog refresh counter limit.

Applied only when WD_RFR_LIMIT[1:0] = NOT(NOT_WD_RFR_

LIMIT[1:0])

00 — Max value is 6.

01 — Max value is 4.

10 — Max value is 2.

11 — Max value is 1.

Reset Condition — POR

9 to 8

WD_FAIL_IMPACT[1:0]

Watchdog fail impact.

Applied only when WD_FAIL_IMPACT[1:0] = NOT(NOT_WD_FAIL_

IMPACT[1:0])

00 — No impact on FSM : stay in NORMAL state.

01 — Transition to INIT_RUN or remain in INIT_RUN state.

10 — Transition to DEEP_FS state.

11 — No impact on FSM : stay in NORMAL state.

Reset Condition — POR

6 to 4

WD_RFR_CNT[2:0]

Watchdog refresh counter value. Resets on overflow.

3b'000 — Counter Value = 0.

3b'001 — Counter Value = 1.

3b'010 — Counter Value = 2.

3b'011 — Counter Value = 3.

3b'100 — Counter Value = 4.

3b'101 — Counter Value = 5.

3b'110 — Counter Value = 6.

3b'111 — Counter Value = 7.

Reset Condition — POR

3 to 0

WD_ERR_CNT[3:0]

Watchdog error counter value

4b'0000 — Counter Value = 0.

4b'0001 — Counter Value = 1.

4b'0010 — Counter Value = 2.

4b'0011 — Counter Value = 3.

4b'0100 — Counter Value = 4.

4b'0101 — Counter Value = 5.

4b'0110 — Counter Value = 6.

4b'0111 — Counter Value = 7.

4b'1000 — Counter Value = 8.

4b'1001 — Counter Value = 9.

4b'1010 — Counter Value = 10.

4b'1011 — Counter Value = 11.

4b'1100 — Counter Value = 12.

4b'1101 — Counter Value = 13.

4b'1110 — Counter Value = 14.

Table 64. WATCHDOG_CTRL1 register description...continued

FS5600

All information provided in this document is subject to legal disclaimers.

Product data sheet

Rev. 4 — 29 April 2024

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