參數(shù)資料
型號: MX53L06402L-50
廠商: MACRONIX INTERNATIONAL CO LTD
元件分類: PROM
英文描述: FLASH 2.7V PROM CARD, XMA7
封裝: CRAD-7
文件頁數(shù): 31/55頁
文件大?。?/td> 262K
代理商: MX53L06402L-50
37
P/N: PM1043
REV. 1.0, NOV. 25, 2003
MX53L06402
7.6.3 Data Tokens
Read and write commands have data transfers associated with them. Data is being transmitted or received via data
tokens. All data bytes are transmitted MSB first.
Data tokens are 4 to 515 bytes long and have the following format:
First byte: Start Byte
11
1
11
1
0
70
Bytes 2-513 (depends on the data block length): User data
Last two bytes: 16 bit CRC.
7.6.4 Data Error Token
If a read operation fails and the card cannot provide the required data, it will send a data error token instead. This token
is one byte long and has the following format:
Figure 19: Data Error Token
The 4 least significant bits (LSB) are the same error bits as in the response format R2.
7.6.5 Clearing Status Bits
As described in the previous paragraphs, in SPI mode, status bits are reported to the host in three different formats:
response R1, response R2 and data error token (the same bits may exist in multiple response types - e.g Card ECC
failed)
As in the MultiMediaCard mode, error bits are cleared when read by the host, regardless of the response format. State
indicators are either cleared by reading or in accordance with the card state.
The following table summarizes the set and clear conditions for the various status bits:
00
0
70
out of range
00
0
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