max5965a Maxim Integrated Products, Inc., max5965a Datasheet - Page 27

• Manufacturer Part Number: max5965a
• Description: High-power, Quad, Monolithic, Pse Controllers For Power Over Ethernet
• Manufacturer: Maxim Integrated Products, Inc.

The interrupt register (Table 6) summarizes the event
register status and is used to send an interrupt signal
(INT goes low) to the controller. Writing a 1 to R1Ah[7]
clears all interrupt and events registers. A reset sets
R00h to 00h.
Table 6. Interrupt Register
Table 7. Interrupt Mask Register
SUP_FLT
TSTR_FLT
IMAX_FLT
CL_END
DET_END
LD_DISC
PG_INT
PEN_INT
MASK7
MASK6
MASK5
MASK4
MASK3
MASK2
MASK1
MASK0
High-Power, Quad, Monolithic, PSE Controllers
SYMBOL
SYMBOL
Register Map and Description
ADDRESS = 00h
ADDRESS = 01h
______________________________________________________________________________________
BIT
BIT
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R
R
R
R
R
R
R
R
Interrupt mask bit 7. A logic-high enables the SUP_FLT interrupts. A logic-low disables the
SUP_FLT interrupts.
Interrupt mask bit 6. A logic-high enables the TSTR_FLT interrupts. A logic-low disables
the TSTR_FLT interrupts.
Interrupt mask bit 5. A logic-high enables the IMAX_FLT interrupts. A logic-low disables
the IMAX_FLT interrupts.
Interrupt mask bit 4. A logic-high enables the CL_END interrupts. A logic-low disables the
CL_END interrupts.
Interrupt mask bit 3. A logic-high enables the DET_END interrupts. A logic-low disables the
DET_END interrupts.
Interrupt mask bit 2. A logic-high enables the LD_DISC interrupts. A logic-low disables the
LD_DISC interrupts.
Interrupt mask bit 1. A logic-high enables the PG_INT interrupts. A logic-low disables the
PG_INT interrupts.
Interrupt mask bit 0. A logic-high enables the PEN_INT interrupts. A logic-low disables the
PEN_INT interrupts.
Interrupt signal for supply faults. SUP_FLT is the logic OR of all the bits [7:0] in register
R0Ah/R0Bh (Table 12).
Interrupt signal for startup failures. TSTR_FLT is the logic OR of bits [7:0] in register
R08h/R09h (Table 11).
Interrupt signal for current-limit violations. IMAX_FLT is the logic OR of bits [3:0] in register
R06h/R07h (Table 10).
Interrupt signal for completion of classification. CL_END is the logic OR of bits [7:4] in
register R04h/R05h (Table 9).
Interrupt signal for completion of detection. DET_END is the logic OR of bits [3:0] in
register R04h/R05h (Table 9).
Interrupt signal for load disconnection. LD_DISC is the logic OR of bits [7:4] in register
R06h/R07h (Table 10).
Interrupt signal for PGOOD status change. PG_INT is the logic OR of bits [7:4] in register
R02h/R03h (Table 8).
Interrupt signal for power-enable status change. PEN_INT is the logic OR of bits [3:0] in
register R02h/R03h (Table 8).
for Power over Ethernet
INT_EN (R17h[7]) is a global interrupt mask (Table 7).
The MASK_ bits activate the corresponding interrupt
bits in register R00h. Writing a 0 to INT_EN (R17h[7])
disables the INT output.
A reset sets R01h to AAA00A00b where A is the state of
the AUTO input prior to the reset.
DESCRIPTION
DESCRIPTION
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