Transcend TS2GSD150 - Manuals

Page 2 - GB 150x Secure Digital Card; Transcend Information Inc.; Architecture

T T T S S S 2 2 2 G G G S S S D D D 1 1 1 5 5 5 0 0 0 2GB 150x Secure Digital Card Transcend Information Inc. 2 Architecture

Page 3 - Bus Protocol; Command; Figure 4: “no response” and “no data” operations

T T T S S S 2 2 2 G G G S S S D D D 1 1 1 5 5 5 0 0 0 2GB 150x Secure Digital Card Transcend Information Inc. 3 Bus Protocol SD bus Communication over the SD bus is based on command and data bit streams which are initiated by a start bit and terminated by a stop bit. • Command : a command is a token...

Page 4 - Command tokens have the following coding scheme:; Figure 7: Command token format

T T T S S S 2 2 2 G G G S S S D D D 1 1 1 5 5 5 0 0 0 2GB 150x Secure Digital Card Transcend Information Inc. 4 Figure 5: (Multiple) Block read operation The block write operation uses a simple busy signaling of the write operation duration on the DAT0 data line (see Figure 6) regardless of the numb...

Page 5 - Figure 8: Response token format

T T T S S S 2 2 2 G G G S S S D D D 1 1 1 5 5 5 0 0 0 2GB 150x Secure Digital Card Transcend Information Inc. 5 The CRC protection algorithm for block data is a 16 bit CCITT polynomial. Figure 8: Response token format In the CMD line the MSB bit is transmitted first the LSB bit is the last. When the...

Page 6 - SPI bus; • The selected card always responds to the command.; • Data Read; Figure 11: Read operation

T T T S S S 2 2 2 G G G S S S D D D 1 1 1 5 5 5 0 0 0 2GB 150x Secure Digital Card Transcend Information Inc. 6 SPI bus While the SD channel is based on command and data bit streams which are initiated by a start bit and terminated by a stop bit, the SPI channel is byte oriented. Every command or da...

Page 7 - • Data Write

T T T S S S 2 2 2 G G G S S S D D D 1 1 1 5 5 5 0 0 0 2GB 150x Secure Digital Card Transcend Information Inc. 7 Figure 12: Read operation - data error • Data Write Single and multiple block write operations are supported in SPI mode. Upon reception of a valid write command, the card will respond wit...

Page 8 - Card Registers

T T T S S S 2 2 2 G G G S S S D D D 1 1 1 5 5 5 0 0 0 2GB 150x Secure Digital Card Transcend Information Inc. 8 Card Registers 1. OCR Register The 32-bit operation conditions register stores the VDD voltage profile of the card. In addition, this register includes a status information bit. This statu...

Page 11 - General

T T T S S S 2 2 2 G G G S S S D D D 1 1 1 5 5 5 0 0 0 2GB 150x Secure Digital Card Transcend Information Inc. 11 AC/DC Character • General Parameter Symbol Min. Max. Unit Remark Peak voltage on all lines -0.3 VDD+0.3 V All Inputs Input Leakage Current -10 10 µA All Outputs Output Leakage Current -10...

Page 12 - Bus Signal Levels; Parameter

T T T S S S 2 2 2 G G G S S S D D D 1 1 1 5 5 5 0 0 0 2GB 150x Secure Digital Card Transcend Information Inc. 12 • Bus Signal Levels As the bus can be supplied with a variable supply voltage, all signal levels are related to the supply voltage. To meet the requirements of the JEDEC specification JES...

Page 14 - ns; Clock fall time; Input hold time; Output Delay time during Identification Mode

T T T S S S 2 2 2 G G G S S S D D D 1 1 1 5 5 5 0 0 0 2GB 150x Secure Digital Card Transcend Information Inc. 14 50 ns C L ≤ 250 pF, (21 cards) t THL 10 ns C L ≤ 100 pF, (7 cards) Clock fall time 50 ns C L ≤ 250 pF, (21 cards) Inputs CMD, DAT (referenced to CLK) Input set-up time t ISU 5 ns C L ≤ 25...

Page 16 - Output Delay time during Data Transfer Mode; Total System capacitance for each line

T T T S S S 2 2 2 G G G S S S D D D 1 1 1 5 5 5 0 0 0 2GB 150x Secure Digital Card Transcend Information Inc. 16 Output Delay time during Data Transfer Mode t ODLY 14 ns Output Hold time t OH 2.5 ns Total System capacitance for each line C L 40 pF

Page 17 - Temperature

T T T S S S 2 2 2 G G G S S S D D D 1 1 1 5 5 5 0 0 0 2GB 150x Secure Digital Card Transcend Information Inc. 17 Reliability and Durability Temperature Operation: -25°C / 85°C (Target spec) Storage: -40°C (168h) / 85°C (500h) Junction temperature: max. 95°C Moisture and corrosion Operation: 25°C / 9...