TEAC DW-224E-V Hardware Specification - Page 32

(1) When the RESET signal is released, the disc detection is performed after self-diagnostics are completed. (2) If the disc is loaded, the mode will switch to the active mode and starting operation will begin. (3) If the disc is not loaded, the mode will switch to the standby mode. (4) Using the power management command (IDLE, IDLE IMMEDIATE, STANDBY, STANDBY IMMEDIATE, SLEEP), the transition from the active mode to the idle, standby or sleep mode, from the idle mode to the standby or sleep mode, or from the standby mode to the idle or sleep mode is possible. (5) The transition from the active mode to the idle mode or from the idle mode to the standby mode is also performed by the timer the has. The timer will be initialized to the specified value when disc detection operation is under way or when a command which requires disc access is executed. The timer will not be initialized when a command which does not require disc access is executed in the active mode. (6) The resumption from the idle or standby mode to the active mode is initiated when a command which requires disc access is executed. (7) The resumption after the sleep mode is possible only after the RESET signal, the SRST (bit 2 of the DEVICE Control Register) or the ATAPI SOFT RESET command is detected. If resumption after the sleep mode is initiated using the RESET signal, an operation similar to when the power is switched ON occurs. (8) If resumption after the sleep mode is initiated using the SRST or the ATAPI SOFT RESET command, the drive enters the standby mode. (9) Tray ejection in each of the active, idle, standby and sleep modes is possible. (10) If the tray is ejected in the active, idle or standby mode, the drive enters the standby mode when the tray is out or the sleep mode when the tray is ejected in the sleep mode. (11) If the tray is inserted when the tray is out, the disc detection operation is performed. (12) If no disc is loaded, the drive will resume a mode when the tray is out. (13) If the disc is loaded, the drive will resume the active mode. However, the drive resumes the sleep mode following the TOC read only when the tray is ejected in the sleep mode. 15.2 Active Mode A state in which the drive is capable of responding in the shortest possible time to an access using a command, and all the electrical circuitry of the drive, the pickup, spindle motor and sled motor are operating. In the following cases, the drive will enter the active mode: (1) While it is being booted after the power is switched ON and self diagnosis is under way. (2) While the booting operation or Reading of the TOC is under way when the tray is inserted and the disc is loaded. (3) While the booting operation or Reading of the TOC is in progress with the power ON and the disc loaded. (4) While an command that requires disc access is being executed. (5) Until the drive switches over to other power management mode using the timer in the drive or the command after either (2), (3) or (4) above is performed. 15.3 Idle Mode The idle mode has the same operational functions as the active mode. However, the current consumption is reduced by lowering the rotational speed of the spindle motor in the idle mode. The transition to the idle mode comes in the following two ways: (1) When using the timer in the drive: After executing (2), (3) and (4) in 14.2, if the specified time elapses by the timer in the drive, the mode will switch from the active mode to the idle mode. The specified time of the timer is set to 8 seconds. (2) When using the power management command (IDLE, IDLE IMMEDIATE): - 30 -