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ST9300 Family Product Manual, Rev. B 2.3 Master/slave configuration . . . . . . . . . . . . . . . . . . 13 2.4 Remote LED . . . . . . . . . . . . . . . . . . . . . . . . . 15 2.5 ECC testing . . . . . . . . . . . . . . . . . . . . . . . . . 15
3.0 ATA interface . . . . . . . . . . . . . . . . . . . . . . . . . 17 3.1 ATA interface connector . . . . . . . . . . . . . . . . . . . 17 3.2 ATA interface signals and connector pins . . . . . . . . . . 18 3.2.1 AT bus signal levels . . . . . . . . . . . . . . . . . . 19 3.3 ATA interface commands . . . . . . . . . . . . . . . . . . 20 3.3.1 Identify Drive command . . . . . . . . . . . . . . . . 22
3.3.2 Set Features command . . . . . . . . . . . . . . . . . 26 3.3.3 Rest/Resume commands . . . . . . . . . . . . . . . . 27
ST9300 Family Product Manual, Rev. B
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Figures
Figure 1. Typical startup and operation current profile for the ST9300 family drives . . . . . . . . . . . . . . . . . 8 Figure 2. Mounting dimensions for the ST9300 family drives . . . . 12 Figure 3. Connector setup for the ST9300 family drives . . . . . . 14 Figure 4. ATA interface connector for the ST9300 family drives . . . 17
ST9300 Family Product Manual, Rev. B
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1.0 Drive specifications
1.1 Formatted capacity
ST9300AG Guaranteed Mbytes (1 Mbyte = 106 bytes) Guaranteed sectors Bytes per sector 262.1 512,100 512 ST9240AG 210.4 411,008 512 ST9150AG 131.0 256,009 512
1.2 Physical organization
ST9300AG Read/Write heads Discs 4 2 ST9240AG 4 2 ST9150AG 2 1
1.3 Logical organization
The ST9300 family drives support all head, cylinder and sector geometries, subject to the maximums specified below and to the following condition: (sectors) × (heads) × (cylinders) ≤ total sectors per drive ST9300AG Sectors per track (max) Read/Write heads (max) Cylinders (max) 64 16 1,024 ST9240AG 64 16 1,024 ST9150AG 64 16 1,024
1.4 Default logical geometry
ST9300AG Sectors per track Read/Write heads Cylinders 60 15 569 ST9240AG 52 8 988 ST9150AG 47 13 419

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