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): 19/55頁
文件大?。?/td> 262K
代理商: MX53L06402L-50
26
P/N: PM1043
REV. 1.0, NOV. 25, 2003
MX53L06402
6.9.3 Read ahead in Stream and multiple block read operation
In stream, or multiple block, read operations, in order to avoid data under-run condition or improve read performance,
the card may fetch data from the memory array, ahead of the host. In this case, when the host is reading the last
addresses of the memory, the card attempts to fetch data beyond the last physical memory address and generates
an OUT_OF_RANGE error.
Therefore, even if the host times the stop transmission command to stop the card immediately after the last byte of
data was read, The card may already have generated the error, and it will show in the response to the stop transmission
command. The host should ignore this error.
6.10 Reset
After power-on by the host, all cards (including the cards having been in Inactive State) are in MultiMediaCard mode
(as opposed to SPI mode) and in Idle State.
Command GO_IDLE_STATE (CMD0) is the software reset command and sets all cards into Idle State. It is also used
to switch the card into SPI mode (see also "Chapter 7.5.1 Mode Selection" for more details).
After power-on or CMD0, all cards’ output bus drivers are in an high-impedance state and the cards are initialized
with a default relative card address ("0x0001" and with a default driver stage register setting (lowest speed, highest
driving current capability). The host clocks the bus at the identification clock rate fOD (see also "Chapter 9.2 Power
On" for more details).
CMD0 is valid in all states with the exception of the Inactive State. While in Inactive state the card will not accept CMD0
unless it is used to switch the card into SPI mode.
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