zm7100 Power-One, zm7100 Datasheet - Page 23

• Manufacturer Part Number: zm7100
• Description: Zm7100 Series Digital Power Manager
• Manufacturer: Power-One

10.4 Protections
The DPM provides undervoltage and overvoltage protections for the intermediate voltage bus, support error
protection by controlling a front end and a crowbar circuit, and perform controlled system shutdown in case of the
main AC-DC failure.
10.4.1
The DPM continuously monitors the intermediate bus voltage via the IBV_S input. Thresholds of IBV protections
are programmed in the GUI Intermediate Bus Configuration Window shown in Figure 20 or directly via the I2C bus
by writing into the IBV Low Threshold and High Threshold IBH registers IBL and IBV shown in Figure 21.
REV. 4.0 JUL 28, 2006
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
R/W-0
Bit 7
I2D
I1D: Interrupt 1 propagation to Group D
0 = disabled
1 = enabled
I1C: interrupt 1 propagation to Group C
0 = disabled
1 = enabled
I1B: interrupt 1 propagation Group B
0 = disabled
1 = enabled
I1A: Interrupt 1 propagation Group A
0 = disabled
1 = enabled
I0D: Interrupt 0 propagation to Group D
0 = disabled
1 = enabled
I0C: interrupt 0 propagation to Group C
0 = disabled
1 = enabled
I0B: interrupt 0 propagation Group B
0 = disabled
1 = enabled
I0A: Interrupt 0 propagation Group A
0 = disabled
1 = enabled
Intermediate Voltage Bus Protections
R/W-0
I2C
R/W-1
I2B
R/W-0
I2A
R/W-0
I1D
Figure 19. Interrupt Configuration Registers IC1 (left) and IC2
Figure 20. Intermediate Bus Configuration Window
R/W-0
R = Readable bit
W = Writable bit
U = Unimplemented bit,
- n = Value at POR reset
I1C
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read as ‘0’
R/W-0
I1B
R/W-1
Bit 0
I1A
ZM7100 Series Digital Power Manager
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
R/W-1
Bit 7
I4D
I3D: Interrupt 3 propagation to Group D
0 = disabled
1 = enabled
I3C: interrupt 3 propagation to Group C
0 = disabled
1 = enabled
I3B: interrupt 3 propagation Group B
0 = disabled
1 = enabled
I3A: Interrupt 3 propagation Group A
0 = disabled
1 = enabled
I2D: Interrupt 2 propagation to Group D
0 = disabled
1 = enabled
I2C: interrupt 2 propagation to Group C
0 = disabled
1 = enabled
I2B: interrupt 2 propagation Group B
0 = disabled
1 = enabled
I2A: Interrupt 2 propagation Group A
0 = disabled
1 = enabled
R/W-0
I4C
R/W-0
I4B
R/W-0
I4A
R/W-0
I3D
R/W-1
R = Readable bit
W = Writable bit
U = Unimplemented bit,
- n = Value at POR reset
I3C
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Data Sheet
read as ‘0’
R/W-0
I3B
R/W-0
Bit 0
I3A