Manual

803M Series Industrial Grade microSD Card Product Manual v2.0Cactus Technologies
®
11
CID bit Width Name Value Field
[127:120] 8 Manufacturer ID 63h MID
[119:104] 16
OEM/Application
ID
4360h OID
[103:64] 40 Product Name CACTU PNM
[63:56] 8 Product Revision 10h PRV
[55:24] 32
Product Serial
Number
XXXXXXXXh PSN
[23:20] 4 Reserved ---- ----
[19:8] 12
Manufacturing
Date
YYM MDT
[7:1] 7 CRC7 check sum XXXXXXXb CRC
[0] 1
Not used, always
'1'
1 ----
Relative Card Address Register (RCA)
4.3.
This 16-bit register stores the card address assigned by the host during the card identication phase.
The default value is 0x0000. In SD mode, the value in this register is generated by a random number
generator as per SDA specications.
Card Specic Data Register (CSD)
4.4.
This 128-bit register provides information on how to access the card content. It denes such
information as the data format, error correction type, maximum access time, data transfer speed,
etc. The various elds in the register dier depending on whether the card is high capacity (4GB or
more) or standard capacity (2GB or less).
4.4.1. High Capacity Card CSD