Transcend Information TS1~2GUSD-S3 User Manual
Page 14
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microSD Memory Card + Reader S3
Transcend Information Inc.
14
The factor MULT is defined as 2
C_SIZE_MULT+2
.
•
ERASE_BLK_EN
The ERASE_BLK_EN defines the granularity of the unit size of the data to be erased. The erase operation can erase
either one or multiple units of WRITE_BL_LEN or one or multiple units (orsectors) of SECTOR_SIZE (see definition
below).
If ERASE_BLK_EN = ’0’, the host can erase one or multiple units of SECTOR_SIZE. The erase will start from the
beginning of the sector that contains the start address to the end of the sector that contains the end address. For
example, if SECTOR_SIZE=31 and the host sets the Erase Start Address to 5 and the Erase End Address to 40.
If ERASE_BLK_EN = ’1’ the host can erase one or multiple units of 512 bytes. All blocks that contain data from start
address to end address are erased. For example, if the host sets the Erase Start Address to 5 and the Erase End
Address to 40.
•
SECTOR_SIZE
The size of an erasable sector. The contents of this register is a 7 bit binary coded value, defining the number of write