Host Interface
The ODD also does not support the following functions which are not supported by ATAPI devices.
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SMART feature set
Host Protected Area feature set
4.4.9 LED Indications
The ODD notifies the operator of a serious error by turning on or blinking the LED lamp. Table 4.16 lists indication modes and operation.
| Table 4.16 LED indications | |
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| |
LED blink cycle | Operation | |
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Off |
| Command wait state |
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On |
| Command processing |
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| Seek operation |
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| Read/write processing (including cache processing) |
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| Formatting |
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| |
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| Spinning up (Including return from standby mode) |
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| Spinning down (Including shifting to standby mode) |
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| |
Blinking (on for 0.1 second and off | Starting the download only firmware (*1) | |
for 0.7 seconds repeatedly) |
| |
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| |
Blinking (on for 0.1 second and off | A | |
for 0.1 second repeatedly) |
| |
|
| |
Blinking (on for 0.4 seconds and off | A thermal alarm occurred. | |
for 0.4 seconds repeatedly) |
| |
|
| |
Blinking (on for 0.1 second and off | An error occurred during writing to the WRITE cache (*2) | |
for 0.3 seconds repeatedly) |
| |
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*1 | The ODD control firmware is stored on the flash ROM and can be | |
| downloaded from the host with the WRITE BUFFER command. However, | |
| if any problem occurs during downloading, such as power failure, | |
| downloading is interrupted and the microcodes in the control firmware may | |
| be damaged. To download microcode data again in such a case, the ODD | |
| starts the emergency download firmware that simply supports only the | |
| WRITE BUFFER command and other basic commands. | |
*2 | The blinking of the LED for the error during writing to the WRITE cache is | |
| cancelled by ejecting the media. |