Taac, Nsac, Transpeed | Transcend Information TS4/8GUSDHC6-P3

TS4/8GUSDHC6-P3	4/8GB microSDHC Class 6 Card + Reader P3

CSD Register Structure

•TAAC

This field is fixed to 0Eh, which indicates 1 ms. The host should not use TAAC, NSAC, and R2W_FACTOR to calculate timeout and should uses fixed timeout values for read and write operations (See 4.6.2).

•NSAC

This field is fixed to 00h. NSAC should not be used to calculate time-out values.

•TRAN_SPEED

The following table defines the maximum data transfer rate per one data line - TRAN_SPEED:

Transcend Information Inc.

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Transcend Information TS4/8GUSDHC6-P3 manual Taac, Nsac, Transpeed

Contents

Pin Definition Description FeaturesPlacement 8GB microSDHC Class 6 Card + Reader P3 Architecture Current Consumption Power Supply VoltageBus Signal Line Load Bus Operating Conditions General Single card capacitance Parameter Symbol Min Max Unit Remark Bus Signal Levels Bus Timing Output Delay time during Data Transfer Mode Bus Timing High Speed Mode Output Hold time Reliability and Durability OCR register Register Information PRV MIDOID PNM PSN MDTCRC CSD Register Fields CSD Version Csdstructure Taac NsacTranspeed Writeblkmisalign CCCReadbllen Readblpartial Sectorsize WpgrpenableCsize Eraseblken Fileformat CopyPermwriteprotect Tmpwriteprotect RCA Register Scrstructure SdspecDatastataftererase Sdbuswidths Sdsecurity Mechanical Description Top View Mechanical Description Bottom View Mechanical Description Keep Out Area MicroSD package Dimensions Placement Dimensions DescriptionSystem Requirements Block Diagram USB PinoutsUSB Pin Identification Parameter MIN DC CharacteristicsDC Electrical Characteristics of 3.3V I/O Recommended Operating Conditions