Datasheet

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MMCRE64G5MXP-0VB datasheet SSD
Rev. 1.3
MMCRE28G5MXP-0VB
MMDOE56G5MXP-0VB
7.3.2.2 Data Structure Revision Number
The Data Structure Revision Number identifies which version of this data structure is implemented by the device.
This revision number will be set to 0005h. This revision number identifies both the Attribute Value and Attribute
Threshold Data structures.
7.3.2.3 Individual Attribute Data Structure
The following defines the 12 bytes that make up the information for each Attribute entry in the Device Attribute Data Structure.
Attribute ID Numbers: Any nonzero value in the Attribute ID Number indicates an active attribute. The device supports following Attribute ID Numbers.
The names marked with (*) indicate that the corresponding Attribute Values is fixed value for compatibility.
ID Attribute Name
9 Power-on Hours
12 Power-on Count
178 Used Reserved Block Count (Chip)
179 Used Reserved Block Count (Total)
180 Unused Reserved Block Count (Total)
183 Runtime bad block (Total)
7.3.2.4 Off-Line Data Collection Status
The value of this byte defines the current status of the off-line activities of the device. Bit 7 indicates an Automatic Off-line Data Collection Status.
Bit 7 Automatic Off-line Data Collection Status
0 Automatic Off-line Data Collection is disabled.
1 Automatic Off-line Data Collection is enabled.
Bits 0–6 represent a hexadecimal status value reported by the device.
Value Definition
0 Off-line data collection never started.
2 All segments completed without errors. In this case the current segment pointer is equal to the total segments required.
3 Off-line activity in progress.
4 Off-line data collection is suspended by the interrupting command.
5 Off-line data collecting is aborted by the interrupting command.
6 Off-line data collection is aborted with a fatal error.
Byte Descriptions
0 Attribute ID number 01-FFh
1~2
Status flag
bit 0 (pre-failure/advisory bit)
bit 0 = 0 : If attribute value is less than the threshold, the drive is in advisory condtion.
Product life period may expired.
bit 0 = 1 : If attribut value is less than the threshold, the drive is in pre-failure condition.
The drive may have failure.
bit 1 (on-line data collection bit)
bit 1 = 0 : Attribute value will be changed during off-line data collection operation.
bit 1 = 1 : Attribute value will be changed during normal operation.
bit 2 (Performance Attribute bit)
bit 3 (Error rate Attribute bit)
bit 4 (Event Count Attribute bit)
bit 5 (Self-Preserving Attribute bit)
bit 6-15 Reserved
3
Attribute value 01h-FDh *1
00h, FEh, FFh = Not in use
01h = Minimum value
64h = Initial value
Fdh = Maximum value
4
Worst Ever normalized Attribute Value
(valid values from 01h-FEh)
5~10
Raw Attribute Value
Attribute specific raw data
(FFFFFFh - reserved as saturated value)
11 Reserved (00h)
*1 For ID = 199 CRC Error Count