using kmvtu as sample
Connection status: EHCI:HUB:HUB:USB 2.00 High-speed
Interface: UFI High-Speed
Serial number: 0011-8839-xxxx
Boot version: 1.04, FW version: 1.10 (Mar 26 2017 14:24:34)
Insertion test... Done.
Init bus...
VCC: 3.3 V, VCCQ: 3.0 V
Failed to initialize eMMC (return code: 20, CMD Error: Invalid response) !!!
CMD1 error, cmd response: 0x3FE040F, card state: 255 (Card is in unknown state)
SEND_OP_COND command failed.
--- Check eMMC pins and connection ---
--- Try to select correct VCC/VCCQ manually ---
--- Try to decrease the clock speed ---
--- Try to use 1 bit connection ---
Check your connection, make sure eMMC inserted properly.
i try to decrease the vccq until 1.8v to make the emmc detected...
Connection status: EHCI:HUB:HUB:USB 2.00 High-speed
Interface: UFI High-Speed
Serial number: 0011-8839-xxxx
Boot version: 1.04, FW version: 1.10 (Mar 26 2017 14:24:34)
Insertion test... Done.
Init bus...
VCC: 3.3 V, VCCQ: 1.8 V
Bus: 8 bit (SDR 4MHz)
Access mode: sector mode
Power supply: dual-voltage (1.70-1.95V, 2.7-3.6V)
Card/BGA: BGA (Discrete embedded) - High density MMC
Manufacturer ID: 0x15 (Samsung)
Product name: VTU00M (0x56545530304d), rev: 0xFC, serial number: 0xF3247CFE
Manufacturing date: Apr 2014
CID: 15010056 54553030 4DFCF324 7CFE4138
CSD: D0270132 0F5903FF F6DBFFFF 8E40406C
EXT_CSD revision: 1.6 (MMC v4.5, v4.51)
Partition info:
Boot1: 2048 KiB
Boot2: 2048 KiB
RPMB: 128 KiB
User area: 14.68 GiB(15,758,000,128 bytes)
Cache size: 64 MiB
Partition configuration: 0x00
No boot acknowledge is sent (default)
Device is not boot-enabled (default)
Partitioning support: 0x07
Device support partitioning feature
Device can have enhanced technological features
Device partitioning possible
Boot configuration protection: 0x00
Boot bus conditions: 0x00
Boot area write protection: 0x00
Power-on write protection: possible
Permanent write protection: possible
Lock status: not locked
User area write protection: 0x50
Password protection features: enabled
Power-on write protection: possible
Permanent write protection: not possible
Lock status: not locked
Selected: [SAMSUNG] moviNAND KMVTU000LM-B503/16GB (FBGA153)
but.. with that voltage... i cant program it.. ex: write a firmware
Connection status: EHCI:HUB:HUB:USB 2.00 High-speed
Interface: UFI High-Speed
Serial number: 0011-8839-xxxx
Boot version: 1.04, FW version: 1.10 (Mar 26 2017 14:24:34)
Insertion test... Done.
Init bus...
VCC: 3.3 V, VCCQ: 1.8 V
Bus: 8 bit (SDR 4MHz)
Access mode: sector mode
Power supply: dual-voltage (1.70-1.95V, 2.7-3.6V)
Card/BGA: BGA (Discrete embedded) - High density MMC
Manufacturer ID: 0x15 (Samsung)
Product name: VTU00M (0x56545530304d), rev: 0xFC, serial number: 0xF3247CFE
Manufacturing date: Apr 2014
CID: 15010056 54553030 4DFCF324 7CFE4138
CSD: D0270132 0F5903FF F6DBFFFF 8E40406C
EXT_CSD revision: 1.6 (MMC v4.5, v4.51)
Partition info:
Boot1: 2048 KiB
Boot2: 2048 KiB
RPMB: 128 KiB
User area: 14.68 GiB(15,758,000,128 bytes)
Re-partitioning... Done.
Writing MBR, GPT at 0x00000000-0x000043FF (34 sectors)... Failed to write block 0x00000000:17408 (return code: 2, CMD Error: CMD CRC fail)
cmd response: 0x19000009, card status: 0x19000000, card state: 0 (Card is in unknown state)
status: A sequence or password error has been detected in lock/unlock card command
Writing boot partition config to 0x48... [179]Failed to Switch (return code: 1, CMD Error: Timeout) !!!
Done.
Writing preloader header... Done.
Current partition access:
Access to boot partition 1
Writing preloader at 0x00000000 (320 sectors)... Failed to write block 0x00000000:65536 (return code: 1, CMD Error: Timeout)
cmd response: 0x900, card status: 0x0, card state: 4 (Card is in transfer state)
status: unknown (0)
Operation canceled by user request.
Setting boot config...
Writing boot partition config to 0x48... [179]Failed to Switch (return code: 1, CMD Error: Timeout) !!!
Done.