Rainbow Electronics MAX5961 - Manual (Page 36)

MAX5961
0 to 16V, Quad, Hot-Swap Controller
with 10-Bit Current and Voltage Monitor
36 ______________________________________________________________________________________
Fault Logging and Indications
The MAX5961 provides detailed information about any
fault conditions that have occurred. Independent
FAULT_ outputs specifically indicate circuit-breaker
shutdown events, while an ALERT output is asserted
whenever a problem has occurred that requires atten-
tion or interaction.
Fault Dependency
If a fault event occurs (digital UV warning/critical, digital
OV warning/critical, or digital overcurrent warning) the
fault is logged by setting a corresponding bit in regis-
ters fault0, fault1, or fault2 (see Tables 47, 48, and 49).
Likewise, circuit-breaker shutdown events are logged in
register status0[7:0] (see Table 50).
Table 45. Force-On Control Register Format
Description: Force-on control register
Register Title: foset
Register Address: 0x68
R R R R R/W R/W R/W R/W
RESET
VALUE
0 0 0 0 ch4_fo ch3_fo ch2_fo ch1_fo 0x00
bit 7 bit 6 bit 5 bit 4 bit 3 bit 2 bit 1 bit 0
Table 46. Force-On Key Register Format
Description: Force-on key register (must contain 0xA5 to unlock force-on feature)
Register Title: fokey
Register Address: 0x67
R/W R/W R/W R/W R/W R/W R/W R/W
RESET
VALUE
fokey[7] fokey[6] fokey[5] fokey[4] fokey[3] fokey[2] fokey[1] fokey[0] 0x00
bit 7 bit 6 bit 5 bit 4 bit 3 bit 2 bit 1 bit 0
Table 47. Undervoltage Status Register Format
Description:
Undervoltage digital-compare status register (warning [3:0] and critical [7:4] undervoltage event
detection status)
Register Title: fault0
Register Address: 0x63
R/C R/C R/C R/C R/C R/C R/C R/C
RESET
VALUE
ch4_uv2 ch3_uv2 ch2_uv2 ch1_uv2 ch4_uv1 ch3_uv1 ch2_uv1 ch1_uv1 0x00
bit 7 bit 6 bit 5 bit 4 bit 3 bit 2 bit 1 bit 0