![]() For quick reference, the latest collection will be posted here. This is the checksum of the CID contents computed as described in SD Specification.As part of my hobby in testing SD cards, I have amassed some CID and CSD register data across many separate blog posts. The manufacturing date is composed of two hexadecimal digits one is 8 bits representing the years(y) and the other is 4bits representing the month (m).ĬRC7 checksum (7 bits). The Serial Number is 32bits of binary 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 0010b The product revision is composed of two Binary Coded Decimal (BCD) digits, four bits each, representing an The product name is a string, 5-character ASCII string. Ltd., SanDisk Corporation and Toshiba Corporation. Note: SD-3C, LLC licenses companies that wish to manufacture and/or sell SD Memory Cards, including but not limited to flash memory, ROM, OTP, RAM, and SDIO Combo Cards SD-3C, LLC is a limited liability company established by Matsushita Electric Industrial Co. This procedure is established to ensure uniqueness of the CID register. The OID number is controlled, defined, and allocated to a SD Memory Card manufacturer by the SD-3C, LLC. This procedure is established to ensure uniqueness of the CID register.Ī 2-character ASCII string that identifies the card OEM and/or the card contents (when used as a distribution media either on ROM or FLASH cards). ![]() The MID number is controlled, defined, and allocated to a SD Memory Card manufacturer by the SD-3C, LLC. The structure of the CID register is defined in the following paragraphs:īinary number of 8-bit that identifies the manufacturer of the card. Every individual Read/Write (RW) card shall have a unique identification number. It contains the card identification information used during the card identification phase. The karte Identification (CID) register is 128 bits wide.
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