Hitachi 7K250 Specifications - Page 39
logical head default
UPC - 000004558972
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Notes: 1. To enable the CSEL mode (Cable Selection mode) the jumper block must be installed at E-F. In the CSEL mode the drive address is determined by AT interface signal #28 CSEL as follows: • When CSEL is grounded or at a low level, the drive address is 0 (Device 0). • When CSEL is open or at a high level, the drive address is 1 (Device 1). 2. In CSEL mode, installing or removing the jumper blocks at A-B or C-D position does not affect any selection of Device or Cable Selection mode. 3. The shipping default position is the Device 0 position. 6.1.4.2 15 logical head default The figure below shows the jumper positions used to select Device 0, Device 1, Cable Selection, or Device1 (Slave) Present setting 15 logical heads instead of default 16 logical head models. IGECA HFDB IGECA HFDB IGECA HFDB IGECA HFDB DEVICE 0 (Master) DEVICE 1 (Slave) CABLE SEL DEVICE 1 (Slave) Present Figure 4: Jumper positions for 15 head logical default Notes: 1. To enable the CSEL mode (Cable Selection mode) the jumper block must be installed at E-F. In the CSEL mode the drive address is determined by AT interface signal #28 CSEL as follows: • When CSEL is grounded or at a low level, the drive address is 0 (Device 0). • When CSEL is open or at a high level, the drive address is 1 (Device 1). 2. In CSEL mode, installing or removing the jumper blocks at A-B or C-D position does not affect any selection of Device or Cable Selection mode. Deskstar 7K250 Hard Disk Drive Specification 25