Samsung（三星）-KLM8G1GEAC-B001.pdf - 第18页

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IF THERE IS ANY OTHER OPERATION TO IMPLEMENT IN ADDITION TO SPECIFICATION
IN THE DATASHEET OR JEDEC STANDARD, PLEASE CONTACT EACH BRANCH OFFICE OR
HEADQUARTERS OF SAMSUNG ELECTRONICS.
datasheet
e·MMC
Rev. 1.0
KLMxGxGEAC-B001
SAMSUNG CONFIDENTIAL
5.1.2 Boot operation
Device supports not only boot mode but also alternative boot mode. Device supports high speed timing and dual data rate during boot.
Figure 5. MultiMediaCard state diagram (boot mode)
Figure 6. MultiMediaCard state diagram (alternative boot mode)
[Table 23] Boot ack, boot data and initialization Time
NOTE:
1) This initialization time includes partition setting, Please refer to INI_TIMEOUT_AP in 6.4 Extended CSD Register.
Normal initialization time (without partition setting) is completed within 1sec
Timing Factor Value
(1) Boot ACK Time < 50 ms
(2) Boot Data Time < 60 ms
(3) Initialization Time
1)
< 3 secs
SE
SE
010
512bytes
+CRC
CLK
CMD
DAT[0]
CMD1 RESP CMD2 RESP
Boot terminated
MIn 8 cloks + 48 clocks = 56 clocks required from
CMD signal high to next MMC command.
(1)
(2)
*(1) Boot ACK Time (2) Boot Data Time (3) CMD1 Time
SE
SE
010
512bytes
+CRC
CLK
CMD
DAT[0]
CMD1
RESP CMD2
CMD0
1
CMD0 Reset
Min74
Clocks
required
after
power is
stable to
start boot
command
*(1) Boot ACK Time (2) Boot Data Time (3) CMD1 Time
*CMD0 with argument 0xFFFFFFFA
(1)
(2)
Boot terminated
CMD1
(3)
- 17 -
IF THERE IS ANY OTHER OPERATION TO IMPLEMENT IN ADDITION TO SPECIFICATION
IN THE DATASHEET OR JEDEC STANDARD, PLEASE CONTACT EACH BRANCH OFFICE OR
HEADQUARTERS OF SAMSUNG ELECTRONICS.
datasheet
e·MMC
Rev. 1.0
KLMxGxGEAC-B001
SAMSUNG CONFIDENTIAL
5.1.3 User Density
Total User Density depends on device type.
For example, 32MB in the SLC Mode requires 64MB in MLC.
This results in decreasing of user density.
[Table 24] Capacity according to partition
[Table 25] Maximum Enhanced Partition Size
[Table 26] User Density Size
Capacities Value Boot partition 1 Boot partition 2 RPMB
8GB
Default. 4,096KB 4,096KB 512KB
Max. 4,096KB 4,096KB 4,096KB
16GB,32GB,64GB
Default. 4,096KB 4,096KB 4,096KB
Max. 4,096KB 4,096KB 4,096KB
Device Max. Enhanced Partition Size
8 GB 3,909,091,328 Bytes
16 GB 7,809,794,048 Bytes
32 GB 15,627,976,704 Bytes
64 GB 31,264,342,016 Bytes
Device User Density Size
8 GB 7,818,182,656 Bytes
16 GB 15,634,268,160 Bytes
32 GB 31,268,536,320 Bytes
64 GB 62,537,072,640 Bytes
4321
User Density
Enhanced User Data Area
4 General Purpose Partitions (GPP)
RPMB
Boot Partition #1 &#2
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IF THERE IS ANY OTHER OPERATION TO IMPLEMENT IN ADDITION TO SPECIFICATION
IN THE DATASHEET OR JEDEC STANDARD, PLEASE CONTACT EACH BRANCH OFFICE OR
HEADQUARTERS OF SAMSUNG ELECTRONICS.
datasheet
e·MMC
Rev. 1.0
KLMxGxGEAC-B001
SAMSUNG CONFIDENTIAL
5.1.4 Auto Power Saving Mode
If host does not issue any command during a certain duration (1ms), after previously issued command is completed, the device enters "Power Saving
mode" to reduce power consumption.
At this time, commands arriving at the device while it is in power saving mode will be serviced in normal fashion
[Table 27] Auto Power Saving Mode enter and exit
[Table 28] Auto Power Saving Mode and Sleep Mode
5.1.5 Performance
[Table 29] Performance
* Test / Estimation Condition : Bus width x8, 200MHz SDR, 512KB data transfer, w/o file system overhead
Mode Enter Condition Escape Condition
Auto Power Saving Mode
When previous operation which came from Host is completed and no command is issued dur-
ing a certain time.
If Host issues any command
Auto Power Saving Mode Sleep Mode
NAND Power ON OFF
GotoSleep Time < 1ms < 1ms
Density Sequential Read (MB/s) Sequential Write (MB/s)
8 GB 120 18
16 GB
150
40
32 GB
50
64 GB