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參數(shù)資料
| 型號(hào)： | flas00xx |
| 廠商： | SIEMENS AG |
| 英文描述： | MultiMediaCard(多媒體卡) |
| 中文描述： | 多媒體卡（多媒體卡） |
| 文件頁數(shù)： | 71/79頁 |
| 文件大?。?/td> | 516K |
| 代理商： | FLAS00XX |
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MultiMediaCard Flash
Preliminary MultiMediaCard Product Manual;
1998 SANDISK CORPORATION
Page 71 of 79
Figure 6-4 “No Data” Operations
6.1.2.4 Read CID/CSD Registers
Unlike the MultiMediaCard protocol (where the register contents are sent as a command
response), reading the contents of the CSD and CID registers in SPI mode is a simple
read-block transaction. The card will respond with a standard response token followed by
a data block of 16 bytes suffixed with a 16 bit CRC.
6.1.2.5 Reset Sequence
The MultiMediaCard requires a defined reset sequence. After power on reset or CMD0
(software reset) the card enters an idle state. At this state the only legal host command is
CMD1 (SEND_OP_COND). In SPI mode, however, CMD1 has no operands.
The host must poll the card (by repeatedly sending CMD1) until the ‘in-idle-state’ bit in the
card response indicates (by being set to 0) that the card completed its initialization
processes and is ready for the next command.6.1.2.6 Error Conditions
Unlike the MultiMediaCard protocol, in the SPI mode the card will always respond to a
command. The response indicates acceptance or rejection of the command. A command
may be rejected if it is not supported (illegal opcode), if the CRC check failed, if it
contained an illegal operand, or if it was out of sequence during an erase sequence.
6.1.3 Memory Array Partitioning
Same as for MultiMediaCard mode.
6.2 SPI Command Set
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| FLASH | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Flash Memory Brochure |
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