SMS512DFA5E NUMONYX, SMS512DFA5E Datasheet - Page 50

• Manufacturer Part Number: SMS512DFA5E
• Description: MICROSD CARD SMS 512MB FLASH MEM
• Manufacturer: NUMONYX

Specifications of SMS512DFA5E

• Memory Size: 512MB
• Memory Type: SD (Secure Digital)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Serial peripheral interface (SPI) mode
7.4
7.4.1
7.4.2
7.4.3
7.4.4
7.4.5
7.5
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Responses
There are several types of response tokens. As in the SD mode, all are transmitted MSB
first.
R1 format
The card sends this response token after every command except for the SEND_STATUS
command.
R1 format responses are 1-byte long. The MSB is always zero and the other bits indicate
errors, an error being indicated by a '1'.
R1b format
This response token is similar to the R1 format response token but for the option of adding
the busy signal.
The busy signal token can be any number of bytes. A zero value indicates that the card is
busy. A non-zero value indicates that the card is ready for the next command.
R2 format
This response token is 2-byte long. It is sent as a response to the SEND_STATUS
command.
R3 format
This response token is sent by the card when a READ_OCR command is received. The
response length is 5 bytes. The structure of the first byte is identical to that of the R1 format
response. The other four bytes contain the OCR register.
For more details about responses, please refer to the SD memory card specification v.2.00.
R7 format
This response token is sent by the card when a SEND_IF_COND command (CMD8) is
received. The response length is 5 bytes. The structure of the first (MSB) byte is identical to
response type R1. The other four bytes contain the card operating voltage information and
echo back of check pattern in the argument and are specified by the same definition as R7
response in SD mode.
Clearing status bits
In the SPI mode, as described in the previous paragraphs, status bits are reported to the
host in three different formats: R1 format response, R2 format response and data error
token (the same bits may exist in several response types - for instance card ECC failed).
As in the SD mode, error bits are cleared when read by the host, regardless of the response
format.
State indicators are cleared either when read by the host or in accordance with the card
state. For more details, please refer to the SD memory card specification.
SMSxxxDF