Hitachi DK23EA Specifications - Page 35

ý.3.2 Commands 6.3.2.1 Command Summary Commands are issued to the device first loading the Command Block Registers with any information needed for the command. Then a command code is written to the Command Register, which starts the execution of the command. Table 6.4 Command Codes Command Description Protocol Class Code Parameter Setup FR SC SN CY DH Read Commands Read Buffer PI 1 E4h D Read Sectors PI 1 20h, 21h V V V V Read Long PI 1 22h, 23h V V V V Read Multiple PI 1 C4h V V V V Read DMA DM 1 C8h, C9h V V V V Read Verify ND 1 40h, 41h V V V V Write Commands Write Buffer PO 2 E8h D Write Sectors PO 2 30h, 31h V V V V Write Long PO 2 32h, 33h V V V V Write Multiple PO 3 C5h V V V V Write DMA DM 3 CAh,CBh V V V V Format Track PO 2 50h V V V Flush Cache ND 1 E7h D Seek Commands Recalibrate ND 1 1Xh D Seek ND 1 7Xh V V V Mode Set/Check, Diagnostic Execute Device Diagnostic ND 1 90h D Initialize Device Parameters ND 1 91h V V Identify Device PI 1 ECh D Set Features ND 1 EFh V D Set Multiple Mode ND 1 C6h V D Power Control Check Power Mode ND 1 98h, E5h V D Idle ND 1 97h, E3h V D Idle Immediate ND 1 95h, E1h D Sleep ND 1 99h, E6h D Standby ND 1 96h, E2h V D Standby Immediate ND 1 94h, E0h D K6602637 Rev.3 02.27.01 - 35 -