SMS512DFA5E NUMONYX, SMS512DFA5E Datasheet - Page 32

• 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

Card registers
5
5.1
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Card registers
Six registers are defined in the card interface: OCR, CID, CSD, RCA, DSR and SCR. See
Table 21
The registers are accessed by using the corresponding commands. The OCR, CID, CSD
and SCR registers contain the card/content specific information, whereas the RCA and DSR
registers are configuration registers that store the actual configuration parameters.
For more details about the register structure, please refer to the SD memory card
specification version 2.00.
Table 21.
1. The RCA register is not used (available) in SPI mode.
OCR register
The 32-bit operation conditions register contains the V
includes a status information bit that goes High (set to ‘1’) once the card power-up sequence
has completed. The OCR register is used by the cards that do not support the full operating
voltage range of the SD memory card bus, or by cards whose power-up sequence does not
match the definition given in
Bit 7 of OCR is newly defined for the dual voltage card and set to ‘0’ by default. If a dual
voltage card does not receive CMD8, OCR bit 7 in the response indicates ‘0’, and the dual
voltage card which received CMD8, sets this bit to ‘1’. This register includes bit 30: this bit is
set to ‘1’ if the card is an high capacity SD memory card, while ‘0’ indicates that the card is a
standard capacity SD memory card. The card capacity status bit is valid after the card
power-up procedure is completed and the card power-up status bit is set to ‘1’. The host
reads this status bit to identify a standard or high capacity SD memory card.
RCA
Name
OCR
DSR
CSD
SCR
CID
(1)
for a description.
Width
128
128
16
16
64
32
SD memory card registers
Card identification number register. It contains the card’s individual
identification number. It is mandatory.
Relative card address register. It contains the local system address of the
card, that is dynamically suggested by the card and approved by the host during
initialization. It is mandatory.
Driver stage register. It is used to configure the card's output drivers. It is
optional.
Card specific data register. It contains the information about the card’s
operation conditions. It is mandatory.
SD configuration register. It contains the information about the SD memory
card's special feature capabilities. It is mandatory
Operation condition register. It is mandatory.
Figure 14: Power-up
Description
diagram.
DD
voltage profile of the card. It also
SMSxxxDF