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LPC47M14X bảng dữ liệu(PDF) 123 Page - SMSC Corporation

tên linh kiện LPC47M14X
Giải thích chi tiết về linh kiện  128 PIN ENGANCED SUPER I/O CONTROLLER WITH AN LPC INTERFACE AND USB HUB
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nhà sản xuất  SMSC [SMSC Corporation]
Trang chủ  http://www.smsc.com
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LPC47M14X bảng dữ liệu(HTML) 123 Page - SMSC Corporation

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SMSC DS – LPC47M14X
Page 123
Rev. 03/19/2001
The figure below illustrates the timing of the game port signals. The 556 timers will reset the outputs (OUTA,B) to
zero and the RC constant (TIMA,B) pins to zero when the RC constant (TIMA,B) inputs reach 2/3 of VREF as shown.
VREF is the voltage on pin 44, which is either 5V or 3.3V. See the “VREF Pin “ section.
JOYW
OUTA,B
JOYR
VREF
TIMA,B
2
3
VREF
t1
The game port register is defined below. It is a runtime register located at the address programmed into the base I/O
address (GAME_PORT) in Logical Device 9.
Note:
Register 0x60 is the high byte; 0x61 is the low byte. For example, to set the primary base address to
1234h, write 12h into 0x60, and 34h into 0x61.
When the activate bit in Logical Device 9 is cleared, it prevents the base I/O address for the game port from being
decoded.



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