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): 9/55頁
文件大?。?/td> 262K
代理商: MX53L06402L-50
17
P/N: PM1043
REV. 1.0, NOV. 25, 2003
MX53L06402
Figure 5: MX53L06402 state diagram (data transfer mode)
The command SELECT_DESELECT_CARD (CMD7) is used to select one card and place it in the Transfer State. If
a previously selected card is in the Transfer State its connection with the host is released and it will move back to the
Stand-by State. Only one card can be, at any time, in the Transfer State. A selected card is responding the CMD7,
the deselected one does not respond to this command.
When CMD7 is sent including the reserved relative card address "0x0000", all cards transfer back to Stand-by State.
This command is used to identify new cards without resetting other already acquired cards. Cards to which an RCA
has already been assigned, do not respond to the identification command flow in this state.
All the data communication in the Data Transfer Mode is consequently a point-to point communication between the
host and the selected card (using addressed commands). All addressed commands are acknowledged by a response
on the CMD line.
All read commands (data is sent from the card via data lines) can be interrupted at any time, by another read or a stop
command.
The DAT bus line is high when no data is transmitted. A transmitted data block consists of a start bit (LOW), followed
by a continuous data stream. The data stream contains the net payload data (and error correction bits if an off-card
ECC is used). The data stream ends with an end bit (HIGH). The data transmission is synchronous to the clock signal.
The payload for block oriented data transfer is protected by a CRC check sum (see "Chapter 7:Error handling").
Stand-by State
(stby)
Sending-data
State
Transfer
State(tran)
CMD7
CMD4,
9,10
CMD7
card is not addressed
card is addressed
CMD3
card identification mode
data transfer mode
no state transition
in data-transfer-mode
CMD13
CMD15
from all states in
data-transfer-mode
CMD0
CMD16,23
CMD11, 17, 18
CMD12
"operation
complete"
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