HB28B064MM2 RENESAS [Renesas Technology Corp], HB28B064MM2 Datasheet - Page 18
HB28B064MM2
Manufacturer Part Number
HB28B064MM2
Description
MultiMediaCard 16 MByte/32 MByte/64 MByte/128 MByte
Manufacturer
RENESAS [Renesas Technology Corp]
Datasheet
1.HB28B064MM2.pdf
(90 pages)
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HB28H016/D032/B064/B128MM2
• DSR_IMP
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
These Hitachi MultiMediaCards' output drivers are not configurable. The parameter DSR_IMP is
permanently assigned to the value ‘0’.
• C_SIZE
This parameter is used to compute the card capacity. The card capacity 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*2048 = 4 GBytes.
The following table shows the card capacity for each model.
Model
HB28H016MM2
HB28D032MM2
HB28B064MM2
HB28B128MM2
Rev.5.0, Jan. 2003, page 16 of 88
memory capacity = BLOCKNR*BLOCK_LEN
BLOCKNR = (C_SIZE+1)*MULT
MULT = 2
BLOCK_LEN = 2
C_SIZE_MULT+2
C_SIZE
0x7A7
0x7A7
0x7A7
0x7A7
READ_BLK_LEN
(C_SIZE_MULT < 8)
DSR type
no DSR implemented
DSR implemented
, (READ_BLK_LEN < 12)
C_SIZE_MULT
2
3
4
5
READ_BLK_LEN
9
9
9
9
Card Capacity
16 MByte
32 MByte
64 MByte
128 MByte
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