MC56U032NCFA Samsung Semiconductor, Inc., MC56U032NCFA Datasheet - Page 22
MC56U032NCFA
Manufacturer Part Number
MC56U032NCFA
Description
Flash Card
Manufacturer
Samsung Semiconductor, Inc.
Datasheet
1.MC56U032NCFA.pdf
(66 pages)
- Current page: 22 of 66
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4.5.3 Relative Card Address (RCA)
4.5.4 Card Specific Data (CSD)
MultiMediaCard
CSD structure
Spec version
Reserved
Data read access-
time-1
Data read access-
time-2 in CLK
cycles NAC
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
The 16-bit relative card address register carries the card address assigned by the host during the card
identification. This address is used for the addressed host to card communication after the card
identification procedure. The default value of the RCA register is 0x0001. The value 0x0000 is reserved
to set all cards in Standby State with the command SELECT_DESELECT_CARD (CMD7). The RCA is
programmed with the command SET_RELATIVE_ADDRESS (CMD3) during the initialization
procedure. The content of this register is lost after power down. The default value is assigned when an
internal reset is applied by the power up detection unit of the MultiMediaCard.
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.
Table 4-7 CSD Field
DD
DD
DD
DD
Name
min
max
min
max
*
100)
CSD_STRUCTURE
SPEC_VERS
--
TAAC
NSAC
TRAN_SPEED
CCC
READ_BL_LEN
READ_BL_PARTIAL
WRITE_BLK_MISALIGN
READ_BLK_MISALIGN
DSR_IMP
--
C_SIZE
VDD_R_CURR_MIN
VDD_R_CURR_MAX
VDD_W_CURR_MIN
VDD_W_CURR_MAX
TM
Field
2
4
2
8
8
8
12
4
1
1
1
1
2
12
3
3
3
3
Width
[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]
CSD-slice
0x3
0x0
0x0(Disabled)
0x0
0x2
0×26
(1.5 ms)
0×01
(100 cycles)
0×2A
(20MHz,Max)
0×0F5
(Class 0,2,4,5, 6, 7)
0×9(512 bytes)
0x0(Disabled)
0x0 (Disabled)
0x0 (Disabled)
*1
*2
*2
*2
*2
Value
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
Type
22
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