ZM7300-KIT-HKS POWER ONE, ZM7300-KIT-HKS Datasheet - Page 9

• Manufacturer Part Number: ZM7300-KIT-HKS
• Manufacturer: POWER ONE

Specifications of ZM7300-KIT-HKS

• Lead Free Status / Rohs Status: RoHS Not Applicable

10.1.1 Write Protection
There are hardware-based and software-based memory write protections. The hardware protection
takes precedence over the software protection.
10.1.1.1
The LCK_N pin enables the hardware memory write protection. If the pin is pulled low, the hardware
lock is active and the memory blocks are then read-only. I
error code (0x00). The write commands to the POL converters bypassing the DPM are also disabled. If
the pin is left floating, the hardware lock is disabled and the software write protection is active.
10.1.1.2
The software write protection allows users to protect the various memory blocks from being overwritten
through the I
The software write protection can be disabled by checking appropriate boxes in the Write Protections
window shown in Figure 5 or via the I
are automatically restored when the DPM’s input power is recycled.
10.1.2 DPM Registers
The DPM setup registers occupy 70 bytes and contain all necessary information to set up the DPM
functionality, define POL converters and Auxiliary Devices, group membership and behavior, margining,
interrupt configurations, etc.
The DPM registers are listed in
of supporting up to 32 POL converters. For other DPM models some of the registers and/or bits in the
registers are not activated depending on the number of supported POLs/Groups/Interrupts/Parallel
Buses for the specific DPM. Writing into an unsupported register or bit will have no effect, reading from
an unsupported register or bit will return an error code (0x00).
ZD-00896 Rev. 5.0 10FEB2009
Hardware Protection
Software Protection
2
C bus. At the power-up the WP register is defaulted to write protect.
Table 1
www.power-one.com
Figure 5. GUI Write Protections Window
2
C bus by writing directly into the register. The write protections
. The table relates to the DPM model number ZM7332 capable
ZM7300G Series Digital Power Manager
2
C write commands to the DPM return an
Page 9 of 33
Data Sheet