WD Scorpio MX375M
Product Features
2679-771293-A01
RELEASED 11/17/10 (WD CONFIDENTIAL)
15
3.3
Reduced Power Spinup (RPS)
Applications for 2.5-inch hard drives like the WD Scorpio include USB external hard drives, notebook
systems, and Consumer Electronics (CE). Due to the fact that many of these applications are portable
in nature, an option for limiting startup current levels and increasing spinup speed is necessary.
To address this requirement, WD has developed Reduced Power Spinup (RPS) mode.
RPS-enabled drives use minimal power consumption during spin up, allowing a greater range of
compatibility with various systems and cables in the marketplace.
RPS mode is set via jumper. See figure 5-4 more information.
Figure 3-1. RPS Spinup Profile
Note:
Current is 200 mA per 10 mV vertical deflection.
3.4
System-on-Chip (SOC)
The System-on-Chip (SOC) is the foundation for WD's next generation electronics and firmware
architecture. The native SATA SOC lowers component count by integrating a hard disk controller,
high performance processor, high speed execution SRAM, and read channel in a 128-pin package. The
processor has a 5-stage pipeline which can execute instructions in a single cycle and a DSP engine for
enhanced operations. The SOC has on-chip tightly coupled memory for high speed code and data
execution that maximizes the processing bandwidth for timing critical operations. It has a high
performance disk controller that incorporates maximum flexibility, modularity, performance, and low
power consumption. The read/write channel has advanced detection capabilities for high-density
drives.
