hb28j128mm3 Renesas Electronics Corporation., hb28j128mm3 Datasheet - Page 11

• Manufacturer Part Number: hb28j128mm3
• Description: Multimediacard 32 Mbyte/64 Mbyte/128 Mbyte/256 Mbyte/512 Mbyte
• Manufacturer: Renesas Electronics Corporation.

HB28K032/L064/J128/J256/J512MM3, HB28K032/L064/J128/J256RM3
Card Specific Data (CSD)
The card specific data register describes how to access the card content. The CSD defines card operating
parameters like maximum data access time, data transfer speed.
The CSD Fields
Name
CSD structure
Spec version
Reserved
Data read access-time-1
Data read access-time-2 in
CLK cycles (NSAC*100)
Max. data transfer rate
Card command classes
Max. read data block length
Partial blocks for read
allowed
Write block misalignment
Read block misalignment
DSR implemented
Reserved
Device size
Max. read current at V
Max. read current at V
Max. write current at V
Max. write current at V
Device size multiplier
Erase group size
Erase group size multiplier
Rev.0.02, Sep.15.2004, page 11 of 89
DD
DD
DD
DD
min VDD_R_CURR_MIN
max VDD_R_CURR_MAX
min VDD_W_CURR_MIN
max VDD_W_CURR_MAX
READ_BLK_MISALIGN 1
C_SIZE_MULT
Field
CSD_STRUCTURE
SPEC_VERS
TAAC
NSAC
TRAN_SPEED
CCC
READ_BLK_LEN
READ_BLK_PARTIAL
WRITE_BLK_MISALIG
N
DSR_IMP
C_SIZE
ERASE_GRP_SIZE
ERASE_GRP_MULT
Width
4
2
8
8
12
4
1
1
1
2
12
3
3
3
3
3
5
2
8
5
CSD-slice Value
[127:126]
[125:122]
[121:120]
[119:112]
[111:104]
[103:96]
[95:84]
[83:80]
[79:79]
[78:78]
[77:77]
[76:76]
[75:74]
[73:62]
[61:59]
[58:56]
[55:53]
[52:50]
[49:47]
[46:42]
[41:37]
“10”
“0011”
0
0x0E (1 ms)
0x01 (100 cycles)
0x2A (20 Mbit/s)
0x0FF (class 0, 1,
2, 3, 4, 5, 6, 7)
0x9 (512 bytes)
‘1’ (Enabled)
‘0’ (Disabled)
‘0’ (Disabled)
‘0’ (Disabled)
0
*
*
*
*
*
*
0
0x0F
1
2
2
2
2
3
Type
read only
read only
read only
read only
read only
read only
read only
read only
read only
read only
read only
read only
read only
read only
read only
read only
read only
read only
read only
read only
read only