hb288016mm1 Renesas Electronics Corporation., hb288016mm1 Datasheet - Page 15

• Manufacturer Part Number: hb288016mm1
• Description: Multimediacard 16 Mbyte
• Manufacturer: Renesas Electronics Corporation.

Defines if the configurable driver stage option is integrated on the card or not. If implemented a driver
stage register (DSR) must be implemented also.
DSR Implementation
DSR_IMP
0
1
The HB288016MM1 output drivers are not configurable. The parameter DSR_IMP is permanently
assigned to the value ‘0’.
This parameter is used to compute the card capacity. The memory capacity of the card is computed from
the entries C_SIZE, C_SIZE_MULT and READ_BLK_LEN as follows:
Where
Therefore, the maximal capacity which can be coded is 4096*512*512 = 1 GBytes.
Example: A 16 MBytes card with BLOCK_LEN = 512 can be coded with C_SIZE_MULT = 2 and
C_SIZE = 1963.
The card capacity is 16 MBytes.
The value of the parameter C_SIZE used in the formula above for the HB288016MM1 is 0x7AB.
DSR_IMP
C_SIZE
memory capacity = BLOCKNR*BLOCK_LEN
BLOCKNR = (C_SIZE+1)*MULT
MULT = 2
BLOCK_LEN = 2
C_SIZE_MULT+2
READ_BLK_LEN
(C_SIZE_MULT
DSR type
no DSR implemented
DSR implemented
, (READ_BLK_LEN
8)
12)
HB288016MM1
15