Product manual

3.13.1 OCR Register

4HE /#2 REGISTER IS  BITS WIDE AND IT DESCRIBES THE OPERATING VOLTAGE RANGE AND STATUS BITS

IN THE POWER SUPPLY 4ABLE  SHOWS THE BIT DElNITIONS OF THE /#2 REGISTER )N SUMMARY

"ITS n ARE RESERVED s

"ITS n DESCRIBE THE 3$ CARD VOLTAGE s

"ITS n ARE RESERVED s

"IT  IS THE POWERUP BUSY STATUS BIT 4HIS BIT IS SET TO hv AFTER THE POWERUP s

INITIALIZATION OF THE CARD HAS BEEN COMPLETED

4HE INITIAL VALUE OF THE /#2 REGISTER IS USUALLY SET TO BINARY VALUE

h       v WHICH CORRESPONDS TO n 6 OPERATION /#2

BITS n ARE ALL LOGIC  "IT hv INDICATES THE BUSY STATUS OF THE CARD AT POWERUP

3.13.2 CID Register

4HIS IS A BIT REGISTER THAT CONTAINS THE CARD IDENTIlCATION INFORMATION SPECIlC TO CARD

MANUFACTURERS 4ABLE  SHOWS THE BIT DElNITIONS OF THE #)$ REGISTER )N SUMMARY

"IT  IS RESERVED AND IS ALWAYS hv s

s CRC: "ITS n ARE #2# BITS

s MDT: "ITS n ARE THE MANUFACTURING DATE

"ITS n ARE THE -ONTH lELD H s  *ANUARY

"ITS n ARE THE 9EAR lELD H s  

"ITS n ARE RESERVED ALL hvS s

s PSN: "ITS n ARE THE SERIAL NUMBER UNSIGNED INTEGER

Table 3.7: SD Card Registers

OCR 32 Operation condition

CID 128 Card information

CSD 128 Card specific information

RCA 16 Relative card address

DSR 16 Driver stage register

SCR 64 Special features

Status 512 Status bits

Memory Card 123