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ADM1029ARQZ-R7 数据表(PDF) 23 Page - ON Semiconductor

部件名 ADM1029ARQZ-R7
功能描述  Dual PWM Fan Controller and Temperature Monitor for High Availability Systems
PDF  50 Pages
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制造商  ONSEMI [ON Semiconductor]
网页  http://www.onsemi.com
标志 ONSEMI - ON Semiconductor

ADM1029ARQZ-R7 数据表(HTML) 23 Page - ON Semiconductor

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ADM1029
BIT 0 = 1
ASSERT CFAULT ON FAN FAULT (TACH FAILURE OR FAULT ASSERTION)
BIT 1 = 1
ASSERT INT ON FAN FAULT (TACH FAILURE OR FAULT ASSERTION)
BIT 2 = 1
ASSERT CFAULT IF FAN HOT UNPLUGGED
BIT 3 = 1
ASSERT INT IF FAN HOT UNPLUGGED
BIT 4 = 1
THERMAL OVERRIDE IF IN SLEEP MODE (FAN RUNS AT ALARM SPEED)
BIT 5 = 1
DRIVE FAULT LOW IF A FAN FAULT IS DETECTED
BIT 6 = 1
IF CFAULT PULLED LOW EXTERNALLY, RUN FAN AT HOT-PLUG SPEED
BIT 7 = 1
IF CFAULT PULLED LOW EXTERNALLY, RUN FAN AT ALARM SPEED
7
6
5
4
3
2
1
0
CONFIGURE FAN FAULT
MASK REGISTERS
FAN 1 (REG 0x20)
FAN 2 (REG 0x21)
CONFIGURE FAN
ALARM SPEED
FAN 1 (REG 0x60)
FAN 2 (REG 0x61)
DEFAULTS
FAN 1 = 100%
FAN 2 = 100%
CONFIGURE FAN
NORMAL SPEED
FAN 1 (REG 0x60)
FAN 2 (REG 0x61)
SET FAN 1 = 33%
SET FAN 2 = 33%
CONFIGURE FAN
HOT-PLUG SPEED
FAN 1 (REG 0x68)
FAN 2 (REG 0x69)
FAN TACH
FAILURE OR
FAULT PIN
LOW?
CFAULT
YES
YES
FAN RUNS AT ALARM SPEED
HAS A FAN
BEEN HOT
UNPLUGGED?
YES
INT
OVER-
TEMPERATURE
DETECTED IN
SLEEP MODE?
YES
YES
FAN RUNS AT ALARM SPEED
HAS CFAULT BEEN
PULLED LOW?
YES
CONFIGURE FAN FAULT
ACTION
FAN 1 (REG 0x18)
FAN 2 (REG 0x19)
FAN TACH
FAILURE OR
FAULT PIN
LOW?
CFAULT
HAS A FAN
BEEN HOT
UNPLUGGED?
YES
INT
FAN TACH
FAILURE OR
FAULT PIN
LOW?
FAN RUNS AT HOT-PLUG SPEED
YES
FAN FAULT ACTION (CONFIGURE REG 0x18 FOR FAN 1, REG 0x19 FOR FAN 2)
BITS 2 – 7
DON'T CARE
FAN FAULT MASK (CONFIGURE REG 0x20 FOR
FAN 1, REG 0x21 FOR FAN 2)
FAN TACH
FAILURE OR
FAULT PIN
LOW?
FAN TACH
FAILURE OR
FAULT PIN
LOW?
FAN 1 RUNS ALARM SPEED
FAN 2 RUNS ALARM SPEED
YES
YES
DEFAULTS
FAN 1 = 100%
FAN 2 = 100%
HAS CFAULT BEEN
PULLED LOW?
BIT 0 = 1
RUN FAN 1 AT ALARM SPEED
IF FAN FAULT IS DETECTED
BIT 1 = 1
RUN FAN 2 AT ALARM SPEED IF
FAN FAULT IS DETECTED
Figure 16. Fan Configuration Flowchart



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