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AT89C5132-ROTIL датащи(PDF) 93 Page - ATMEL Corporation

номер детали AT89C5132-ROTIL
подробное описание детали  USB Microcontroller with 64K Bytes Flash Memory
PDF  182 Pages
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производитель  ATMEL [ATMEL Corporation]
домашняя страница  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

AT89C5132-ROTIL датащи(HTML) 93 Page - ATMEL Corporation

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93
4173E–USB–09/07
AT89C5132
16.6.3.5
Busy Status
As shown in Figure 16-4 the card uses a busy token during a block write operation. This busy
status is reported by the CBUSY flag in MMSTA register and by the MCBI flag in MMINT which
is set every time CBUSY toggles, i.e. when the card enters and exits its busy state. This flag
may generate an MMC interrupt request as detailed in Section "Interrupt", page 96.
Figure 16-16. Data Stream Transmission Flows
Send
STOP Command
Data Stream
Transmission
Start Transmission
DATEN = 1
DATEN = 0
FIFO Empty?
F1EI or F2EI = 1?
FIFO Filling
Write 8 Data to MMDAT
No More Data
To Send?
FIFOs Filling
Write 16 Data to MMDAT
a. Polling Mode
Data Stream
Initialization
FIFOs Filling
Write 16 Data to MMDAT
Data Stream
Transmission ISR
FIFO Filling
Write 8 Data to MMDAT
Send
STOP Command
No More Data
to Send?
b. Interrupt Mode
FIFO Empty?
F1EI or F2EI = 1?
Start Transmission
DATEN = 1
DATEN = 0
Unmask FIFOs Empty
F1EM = 0
F2EM = 0
Mask FIFOs Empty
F1EM = 1
F2EM = 1



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