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參數資料

型號：	MC28U064NACA
廠商：	SAMSUNG SEMICONDUCTOR CO. LTD.
英文描述：	MultiMediaCard Specification
中文描述：	多媒體卡規格
文件頁數：	22/66頁
文件大小：	1422K
代理商：	MC28U064NACA

MultiMediaCard

4.5.3 Relative Card Address (RCA)

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.

4.5.4 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.

Table 4-7 CSD Field

Name

Field

Width

CSD structure

CSD_STRUCTURE

Spec version

SPEC_VERS

Reserved

Data read access-

time-1

Data read access-

time-2 in CLK

cycles NAC

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

DSR_IMP

Reserved

Device size

C_SIZE

Max. read current

at V

min

Max. read current

at V

max

Max. write current

at V

min

Max. write current

at V

max

CSD-slice

[127:126]

[125:122]

[121:120]

[119:112]

Value

Type

0x2

0x3

0x0

0 26

(1.5 ms)

0 01

(100 cycles)

read only

TAAC

NSAC

[111:104]

read only

TRAN_SPEED

[103:96]

0 2A

(20MHz,Max)

0 0F5

(Class 0,2,4,5, 6, 7)

0 9(512 bytes)

read only

CCC

[95:84]

read only

READ_BL_LEN

[83:80]

read only

READ_BL_PARTIAL

[79:79]

0x0(Disabled)

read only

WRITE_BLK_MISALIGN

[78:78]

0x0(Disabled)

read only

READ_BLK_MISALIGN

[77:77]

0x0 (Disabled)

read only

[76:76]

[75:74]

[73:62]

[61:59]

0x0 (Disabled)

0x0

read only

VDD_R_CURR_MIN

VDD_R_CURR_MAX

[58:56]

read only

VDD_W_CURR_MIN

[55:53]

read only

VDD_W_CURR_MAX

[52:50]

read only

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相關代理商/技術參數	參數描述
MC28U064NACA-0QC00	制造商:SAMSUNG 制造商全稱:Samsung semiconductor 功能描述:MultiMediaCard Specification
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MC28U064NAFB-0QC00	制造商:SAMSUNG 制造商全稱:Samsung semiconductor 功能描述:MultiMediaCard Specification

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