參數(shù)資料
型號(hào)： MX53L06402L-50
廠商： MACRONIX INTERNATIONAL CO LTD
元件分類： PROM
英文描述： FLASH 2.7V PROM CARD, XMA7
封裝： CRAD-7
文件頁(yè)數(shù)： 52/55頁(yè)
文件大?。?/td> 262K
代理商： MX53L06402L-50
6
P/N: PM1043
REV. 1.0, NOV. 25, 2003
MX53L06402
MID
An 8 bit binary number that identifies the card manufacturer. The MID number is controlled, defined and allocated to
a MultiMediaCard manufacturer by the MMCA. This procedure is established to ensure uniqueness of the CID
register.
OID
A 16 bit binary number that identifies the card OEM and/or the card contents (when used as a distri-bution media either
on ROM or FLASH cards). The OID number is controlled, defined and allocated to a MultiMediaCard manufacturer
by the MMCA. This procedure is established to ensure uniqueness of the CID register.
PNM
The product name is a string, 6 ASCII characters long.
PRV
The product revision is composed of two Binary Coded Decimal (BCD) digits, four bits each, repre-senting an "n.m"
revision number. The "n" is the most significant nibble and "m" is the least significant nibble.
As an example, the PRV binary value field for product revision "6.2" will be: 0110 0010
PSN
A 32 bits unsigned binary integer.
MDT
The manufacturing date is composed of two hexadecimal digits, four bits each, representing a two digits date code
m/y;
The "m" field, most significant nibble, is the month code. 1 = January.
The "y" field, least significant nibble, is the year code. 0 = 1997.
As an example, the binary value of the MDT field for production date "April 2000" will be: 0100 0011.
CRC
CRC7 checksum (7 bits). This is the checksum of the CID contents.
The CID has to be error free. To ensure the correctness of the CID a CRC checksum is added to the end of the CID.
The CRC checksum is computed by the following formula:
CRC Calculation: G(x) = x 7 + x 3 + 1
M(x) = CID[127]*x 119 +...+ CID[8]*x 0
CRC[6...0] = Remainder [(M(x)*x 7)/G(x)]
In the MX53L06402 the CID is programmed with parameters defined by the content provider. The programming is
done by the mask which is used for the data programming too. Details of the mask programming and the formats of
data transfer between content provider and card manufacturer are defined in "Chapter 8: Programming mask format".
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