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| 型号： | SFSD8192N1BW1MT-E-QG-111-STD |
| 厂商： | Swissbit NA Inc |
| 文件页数： | 11/19页 |
| 文件大小： | 0K |
| 描述： | FLASH MICRO SD 8GB EXT TEMP |
| 标准包装： | 1 |
| 系列： | S-300U |
| 存储容量： | 8GB |
| 存储器类型： | microSD? |
| 其它名称： | 1052-1086 |
8 Host access Specification
The following chapters summarize how the host accesses the card:
Chapter 8.1 summarizes the SD and SPI buses.
Chapter 8.2 summarizes the registers.
8.1 SD and SPI Bus Modes
The card supports SD and the SPI Bus modes. Application can chose either one of the modes. Mode selection is
transparent to the host. The card automatically detects the mode of the reset command and will expect all further
communication to be in the same communication mode. The SD mode uses a 4-bit high performance data
transfer, and the SPI mode provides compatible interface to MMC host systems with little redesign, but with a
lower performance.
8.1.1 SD Bus Mode Protocol
The SD Bus mode has a single master (host) and multiple slaves (cards) synchronous topology. Clock, power, and
ground signals are common to all cards. After power up, the SD Bus mode uses DAT0 only; after initialization, the
host can change the cards’ bus width from 1 bit (DAT0) to 4 bits (DAT0 -DAT3). In high speed mode, only one card
can be connected to the 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.
The SD bus signals are listed in Table 18, and the SD bus topology is illustrated in Figure 8: SD Bus Topology.
Table 18: SD Bus Signals
Signal
CLK
CMD
DAT0-DAT3
Vdd, Vss
Description
Host to card clock signal
Bidirectional Command/Response signal
4 Bidirectional data signals
Power and Ground
Figure 8: SD Bus Topology
Swissbit AG
Industriestrasse 4
CH-9552 Bronschhofen
Switzerland
Swissbit reserves the right to change products or specifications without notice.
www.swissbit.com
industrial@swissbit.com
Revision: 1.00
S-300u_data_sheet_Rev100.doc
Page 11 of 19
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相关代理商/技术参数 |
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|---|---|
| SFSD8192N1BW1MT-I-QG-111-STD | 功能描述:Memory Card microSD? 8GB Class 10 SLC 制造商:swissbit na inc. 系列:S-300U 零件状态:有效 存储器类型:microSD? 存储容量:8GB 速度:10 类 技术:SLC 工作温度:-40°C ~ 85°C 标准包装:120 |
| SFSD8192N2BM1TO-I-LF-2A1-STD | 功能描述:Memory Card microSDHC? 8GB Class 10, UHS Class 1 MLC 制造商:swissbit na inc. 系列:S-45u 零件状态:有效 存储器类型:microSDHC? 存储容量:8GB 速度:10 类，UHS 1 类 技术:MLC 工作温度:-40°C ~ 85°C 标准包装:120 |
| SFSD8192N3BM1TO-I-GE-2B1-STD | 功能描述:MEMORY CARD MICROSDHC 8GB MLC 制造商:swissbit 系列:S-45u 零件状态:在售 存储器类型:microSDHC? 存储容量:8GB 速度:10 类，UHS 1 类 技术:MLC 工作温度:-40°C ~ 85°C 标准包装:1 |
| SFSD8192N3BM1TO-I-LF-2CP-STD | 功能描述:MEMORY CARD MICROSDHC 8GB PSLC 制造商:swissbit 系列:S-46u 零件状态:在售 存储器类型:microSDHC? 存储容量:8GB 速度:10 类，UHS 1 类 技术:pSLC 工作温度:-40°C ~ 85°C 标准包装:1 |
| SFSDT-02-28-G-04.00-S | 制造商:Samtec Inc 功能描述:.050 (1.27) SOCKET DISCRETE CABLE ASSEMBLY - Bulk |
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