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AT90SCR100 Datasheet(PDF) 214 Page - ATMEL Corporation

Part # AT90SCR100
Description  8-bit Microcontroller for Smart Card Readers
PDF  433 Pages
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Manufacturer  ATMEL [ATMEL Corporation]
Direct Link  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

AT90SCR100 Datasheet(HTML) 214 Page - ATMEL Corporation

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TPR0327AY–SMS–30Jan09
AT90SCR100
Figure 17-7.
Example of OUT Data bank Management
17.5.12.2
“Autoswitch” mode
In this mode, the clear of the UPINTX.FIFOCON bit is performed automatically by hardware
each time the Pipe bank is full. The firmware has to check if the next bank is empty or not before
writing the next data. On UPINTX.TXOUTI interrupt, the firmware fills a complete bank. A new
interrupt will be generated each time the current bank becomes free.
OUT
ACK
DATA
(Bank 0)
UPINTX.TXOUTI
SW
SW
UPINTX.FIFOCON
SW
SW
OUT
Write data from CPU
Bank 0
Write data from CPU
Bank 0
HW
OUT
OUT
ACK
ACK
DATA
(Bank 0)
DATA
(Bank 1)
UPINTX.TXOUTI
SW
SW
UPINTX.FIFOCON
SW
SW
Write data from CPU
Bank 0
SW
Write data from CPU
Bank 1
Write data from CPU
Bank 0
HW
Example with 1 OUT data bank
Example with 2 OUT data banks
OUT
OUT
ACK
ACK
DATA
(Bank 0)
DATA
(Bank 1)
UPINTX.TXOUTI
SW
SW
UPINTX.FIFOCON
SW
SW
Write data from CPU
Bank 0
SW
Write data from CPU
Bank 1
Write data from CPU
Bank 0
HW
Example with 2 OUT data banks



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