Transcend Secure Digital Card TS2GSD150 Bedienungsanleitung

2GB 150x Secure Digital Card

Transcend Information Inc.

Description

TS2GSD150 is a 2GB Secure Digital Card of 150X

ultra-high performance. It is specifically designed to

meet the security, capacity, performance and small

form factor requirements in newly emerging audio

and video consumer electronic devices. Based on

dual channel technology and high quality SLC (Single

Level Cell) NAND flash chip, TS2GSD150 is the ideal

companion to bring out the most from your

high-performance electronic devices.

Placement

Front Back

Features

•ROHS compliant product

•Operating Voltage: 2.7 ~ 3.6V

•Operating Temperature: -25 ~ 85°C

•Insertion/removal durability: 10,000 cycles

•Fully compatible with SD card spec. v1.1

•Mechanical Write Protection Switch

•Support clock frequencies: 0~50MHz

•Support different Bus width: x1, x4

•Support SD command class 0,2,4,5,7,8

•Supports Copy Protection for Recorded Media(CPRM) for

music and other commercial media

•Form Factor: 24mm x 32mm x 2.1mm

Pin Definition

SD Mode SPI Mode

Pin No. Name Type Description Name Type Description

1 CD/DAT3 I/O/PP Card Detect/Data Line [Bit3] CS I

Chip Select (neg true)

2 CMD PP Command/Response DI I

Data In

3 VSS1 S Supply voltage ground VSS S

Supply voltage ground

4 VDD S Supply voltage VDD S

Supply voltage

5 CLK I Clock SCLK I Clock

6 VSS2 S Supply voltage ground VSS2 S Supply voltage ground

7 DAT0 I/O/PP Data Line [Bit0] DO O/PP

Data Out

8 DAT1 I/O/PP Data Line [Bit1] RSV

9 DAT2 I/O/PP Data Line [Bit2] RSV

2GB 150x Secure Digital Card

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Architecture

2GB 150x Secure Digital Card

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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 which starts an operation. A command is sent from the host either to a single

card (addressed command) or to all connected cards (broadcast command). A command is transferred serially on

the CMD line.

• Response: a response is a token which is sent from an addressed card, or (synchronously) from all connected

cards, to the host as an answer to a previously received command. A response is transferred serially on the CMD

line.

• Data: data can be transferred from the card to the host or vice versa. Data is transferred via the data lines.

Figure 4: “no response” and “no data” operations

Card addressing is implemented using a session address, assigned to the card during the initializa-tion phase. The

basic transaction on the SD bus is the command/response transaction (refer to Figure 4). This type of bus

transactions transfer their information directly within the command or response structure. In addition, some

operations have a data token.

Data transfers to/from the SD Memory Card are done in blocks. Data blocks always succeeded by CRC bits. Single

and multiple block operations are defined. Note that the Multiple Block operation mode is better for faster write

operation. A multiple block transmission is terminated when a stop command follows on the CMD line. Data transfer

can be configured by the host to use single or multiple data lines.

2GB 150x Secure Digital Card

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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 number of data lines used for transferring the data.

Figure 6: (Multiple) Block write operation

Command tokens have the following coding scheme:

Figure 7: Command token format

Each command token is preceded by a start bit (‘0’) and succeeded by an end bit (‘1’). The total length is 48 bits.

Each token is protected by CRC bits so that transmission errors can be detected and the operation may be repeated.

Response tokens have four coding schemes depending on their content. The token length is either 48 or 136 bits.

2GB 150x Secure Digital Card

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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 wide bus option is used, the data is transferred 4 bits at a time (refer to Figure 10). Start and end bits, as

well as the CRC bits, are transmitted for every one of the DAT lines. CRC bits are calculated and checked for every

DAT line individually. The CRC status response and Busy indica-tion will be sent by the card to the host on DAT0 only

(DAT1-DAT3 during that period are don’t care).

2GB 150x Secure Digital Card

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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 data block is built of 8-bit bytes and is byte aligned to

the CS signal (i.e. the length is a multiple of 8 clock cycles).

Similar to the SD protocol, the SPI messages consist of command, response and data-block tokens All

communication between host and cards is controlled by the host (master). The host starts every bus transaction by

asserting the CS signal low.

The response behavior in the SPI mode differs from the SD mode in the following three aspects:

• The selected card always responds to the command.

• Two new (8 & 16 bit) response structure is used

• When the card encounters a data retrieval problem, it will respond with an error response (which replaces the

expected data block) rather than by a time-out as in the SD mode.

In addition to the command response, every data block sent to the card during write operations will be responded

with a special data response token.

• Data Read

Single and multiple block read commands are supported in SPI mode. However, in order to comply with the SPI

industry standard, only two (unidirectional) signal are used. Upon reception of a valid read command the card will

respond with a response token followed by a data token of the length defined in a previous SET_BLOCKLEN

(CMD16) command. A multiple block read operation is terminated, similar to the SD protocol, with the

STOP_TRANSMISSION command.

Figure 11: Read operation

A valid data block is suffixed with a 16 bit CRC generated by the standard CCITT polynomial X16 +X12 +X5+1.

In case of a data retrieval error, the card will not transmit any data. Instead, a special data error token will be sent to

the host Figure 12 shows a data read operation which terminated with an error token rather than a data block.

2GB 150x Secure Digital Card

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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 with a response token and will wait for a data block to be sent from the host. CRC suffix, block

length and start address restrictions are identical to the read operation (see Figure 13).

Figure 13: Write operation

After a data block has been received, the card will respond with a data-response token. If the data block has been

received without errors, it will be programmed. As long as the card is busy programming, a continuous stream of busy

tokens will be sent to the host (effectively holding the DataOut line low).

2GB 150x Secure Digital Card

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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 status bit is set if the card power up procedure has been finished. The OCR register shall

be implemented by all cards. The supported voltage range is coded as shown in the following table. As long as the

card is busy, the corresponding bit (31) is set to LOW.

OCR bit VDD voltage window SD

[6:0] Reserved 000 0000 b

[7] 1.65V – 1.95V 0 b

[14:8] 2.0V – 2.6V 000 0000 b

[23:15] 2.7V – 3.6V 1 1111 1111 b

[30:24] Reserved 000 0000 b

[31] Card power status bit

(1) OCR bit [31] is set to LOW if the card has not finished the power up routine.

2. Card Identification Register (CID)

The Card IDentification (CID) register is 128 bits wide. It contains the card identification information used during the

card identification phase. Every individual flash or I/O card shall have an unique identification number. The structure

of the CID register is defined in the following

table

3. Driver Stage Register (DSR)

The 16-bit driver stage register is optionally used to improve the bus performance for extended operating

conditions.The CSD register carries the information about the DSR register usage. This register is not implemented

2GB 150x Secure Digital Card

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4. Relative Card Address Register (RCA)

The writable 16-bit relative card address register carries the card address assigned by the host during the card

identification. This address is used for the addressed host-card communication after the card identification procedure.

The default value of the RCA register is 0x0001. The value 0x0000 is reserved to set all cards into the Stand-by State

with CMD7. In SD mode, the value of this register is generated by random number generator inside the card. Please

reference to SD specification for detail information.

5. Card Specific Data Register (CSD)

The Card-Specific Data register provides information on how to access the card contents. The CSD defines the data

format, error correction type, maximum data access time, data transfer speed, whether the DSR register can be used

etc. The programmable part of the register can be changed by CMD27.

CSD bit Width Name Field Value Note

[127:126] 2 CSD structure CSD_STRUCTURE 00 b v1.0

[125:120] 6 Reserved --- --- ---

[119:112] 8 Data read access-time 1 TAAC 7F h 80 ms

[111:104] 8 Data read access-time 2 NSAC FF h 25.5k clocks

[103:96] 8 Max. bus clock freq. TRAN_SPEED 32 h 25 MHz

[95:84] 12 Card command classes CCC 1F5 h (*1)

[83:80] 4 Max. read data block length READ_BL_LEN 9 h 512 bytes

[79] 1 Partial block read allowed READ_BL_PARTIAL 1 b Support

[78] 1 Write block misalignment WRITE_BLK_MISALIGN 1 b Support

[77] 1 Read block misalignment READ_BLK_MISALIGN 1 b Support

[76] 1 DSR implemented DSR_IMP 0 b Not support

[75:74] 2 Reserved --- --- ---

[73:62] 12 Device size C_SIZE (*2) (*2)

[61:59] 3 Max. R_curr @ VDD min VDD_R_CURR_MIN 101 b 35 mA

[58:56] 3 Max R_curr @ VDD max VDD_R_CURR_MAX 101 b 45 mA

[55:53] 3 Max W_curr @ VDD min VDD_W_CURR_MIN 101 b 35 mA

[52:50] 3 Max W_curr @ VDD max VDD_W_CURR_MAX 101 b 45 mA

[49:47] 3 Device size multiplier C_SIZE_MULT (*2) (*2)

[46] 1 Erase single block enable ERASE_BLK_EN 0 b Not allowed

[45:39] 7 Erase sector size SECTOR_SIZE (*3) (*3)

[38:32] 7 Write protect group size WP_GRP_SIZE (*4) (*4)

[31] 1 Write protect group enable WP_GRP_ENABLE 1 b Support

[30:29] 2 Reserved --- --- ---

[28:26] 3 Write speed factor R2W_FACTOR 101 b 32X

[25:22] 4 Max. write data block length WRITE_BL_LEN 9 h 512 bytes

[21] 1 Partial block write allowed WRITE_BL_PARTIAL 1 b Support

[20:16] 5 Reserved --- --- ---

[15] 1 File format group FILE_FORMAT_GRP 0 b HD like FAT

2GB 150x Secure Digital Card

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[14] 1 Copy flag COPY 0 b Not copied

[13] 1 Permanent write protection PERM_WRITE_PROTECT 0 b Not protected

[12] 1 Temporary write protection TMP_WRITE_PROTECT 0 b Not protected

[11:10] 2 File format FILE_FORMAT 00 b HD like FAT

[9:8] 2 ECC code ECC 00 b None

[7:1] 7 CRC CRC --- ---

[0] 1 Not used always ｀1 --- 1 b ---

(*1) Support command class 0,2,4,5,6,7,8. Include : Basic, Block read/write, Erase, Write protection, application

command, and Lock card. Not support 1,3. Include : Stream read/write.

(*2)~(*4) This field is not a constant value. The value will be changed by different flash memory.

6. Extended CSD Register (EXT_CSD)

The Extended CSD register defines the card properties and selected modes. It is 512 bytes long.

The most significant 320 bytes are the Properties segment, which defines the card capabilities and cannot be

modified by the host. The lower 192 bytes are the Modes segment, which defines the configuration the card is

working in. These modes can be changed by the host by means of the SWITCH command.

7. SD card Configuration Register (SCR)

The CSD register is another configuration register in SD card. SCR provides on SD card s special features that were

configured into the given card. The size of SCR is 64 bit.

For SD card only. SCR is a read only register.

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