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ZM7332G-65508Y-B1 Datasheet(PDF) 8 Page - Power-One |
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ZM7332G-65508Y-B1 Datasheet(HTML) 8 Page - Power-One |
8 / 32 page ZM7300G Series Digital Power Manager Data Sheet REV. 3.3 NOV 26, 2007 www.power-one.com Page 8 of 32 10 Description The ZM7300 series DPMs perform translation between the I 2C interface connected to a host system or the Graphical User Interface and the SD communication bus connected to Z-series POL converters. In addition, DPMs carry out programming, monitoring, data storage, POL group management, hot-swap control, protection, and control and monitoring of auxiliary devices. The DPMs can be controlled via the GUI or directly via the I 2C bus by using specific commands described in the “DPM Programming Manual”. 10.1 DPM Memory The DPM memory consists of RAM and non-volatile memory (Flash). The RAM is used for programming operations and manipulation of the various blocks of configuration, setup, status, and monitoring registers. The non-volatile memory is used to store programming and configuration data. The DPM memory includes DPM registers, POL setup registers, monitoring data, and user memory as shown in Figure 4. Setup registers for the DPM and the POL converters are protected by CRCs that are checked during programming of POL converters and at the power-up of the DPM. The LCK_N pin and the write protection register WP limit the write access to the memory blocks in the DPM and POL converters. The WP register content is defaulted to write protect upon powering up the DPM. Figure 4. DPM Memory and Write Protection 10.1.1 Write Protection There are hardware-based and software-based memory write protections. The hardware protection takes precedence over the software protection. |
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