MAX5935CAX Maxim Integrated Products, MAX5935CAX Datasheet - Page 25

• Manufacturer Part Number: MAX5935CAX
• Description: Hot Swap & Power Distribution
• Manufacturer: Maxim Integrated Products

Specifications of MAX5935CAX

• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Table 10. Startup Event Register
Table 11. Supply Event Register
Table 12. Port Status Registers
read through the R08h address, the content of the reg-
ister is left unchanged. When read through the CoR
R09h address, the register content will be cleared. A
reset sets R08h/R09h = 00h.
ADDRESS = 0Ch, 0Dh, 0Eh, 0Fh
STRT_FLT4
STRT_FLT3
STRT_FLT2
STRT_FLT1
OSC_FAIL
V
V
SYMBOL
SYMBOL
V
V
V
DD_UVLO
EE_UVLO
V
SYMBOL
Reserved
Reserved
DET_ST_
CLASS_
DD_OV
DD_UV
IVC4
IVC3
IVC2
IVC1
EE_OV
EE_UV
TSD
ADDRESS =
ADDRESS =
BIT
BIT
______________________________________________________________________________________
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
BIT
7
6
5
4
3
2
1
0
R/W
0Ah
R/W
08h
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R/W
R
R
R
R
R
R
R
R
R/W
CoR
CoR
CoR
CoR
CoR
CoR
CoR
CoR
0Bh
R/W
CoR
CoR
CoR
CoR
CoR
CoR
CoR
CoR
09h
Reserved
CLASS_[2]
CLASS_[1]
CLASS_[0]
Reserved
DET_[2]
DET_[1]
DET_[0]
DESCRIPTION
Quad Network Power Controller
Class overcurrent flag for port 4
Class overcurrent flag for port 3
Class overcurrent flag for port 2
Class overcurrent flag for port 1
Startup failed on port 4
Startup failed on port 3
Startup failed on port 2
Startup failed on port 1
Overtemperature shutdown
V
V
V
V
V
Oscillator amplitude is below limit
V
DD
DD
EE
EE
EE
DD
undervoltage-lockout condition
overvoltage condition
undervoltage condition
overvoltage condition
undervoltage condition
undervoltage-lockout condition
The MAX5935 continuously monitors the power supplies
and sets the appropriate bits in the supply event register
(Table 11). V
V
V
its undervoltage threshold.
OSC_FAIL is set to 1 whenever the amplitude of the
oscillator signal at the OSC_input falls below a level
that might compromise the AC disconnect detection
function. OSC_FAIL generates an interrupt only if at
least one of the ACD_EN (R13h[7:4]) bit is set high.
A thermal shutdown circuit monitors the temperature of
the die and resets the MAX5935 if the temperature
exceeds +150°C. TSD is set to 1 after the MAX5935
returns to normal operation. TSD is also set to 1 after
every UVLO reset.
When V
out (UVLO) threshold, the MAX5935 is in Reset mode
and securely holds all ports off. When V
rise to above their respective UVLO thresholds, the
device comes out of reset as soon as the last supply
DD_UV
DD
/V
EE
/V
for Power-Over-LAN
DD
EE_UV
DESCRIPTION
DESCRIPTION
and/or |V
exceeds
DD_OV
is set to 1 whenever V
EE
/V
| is below its undervoltage-lock-
its
EE_OV
overvoltage
is set to 1 whenever
DD
/V
DD
EE
threshold.
falls below
and |V
EE
25
|