LPC47M140-NC SMSC [SMSC Corporation], LPC47M140-NC Datasheet - Page 123

• Manufacturer Part Number: LPC47M140-NC
• Description: 128 PIN ENGANCED SUPER I/O CONTROLLER WITH AN LPC INTERFACE AND USB HUB
• Manufacturer: SMSC [SMSC Corporation]

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.
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:
When the activate bit in Logical Device 9 is cleared, it prevents the base I/O address for the game port from being
decoded.
SMSC DS – LPC47M14X
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.
JOYW
TIMA,B
OUTA,B
JOYR
t1
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VREF
2
3
VREF
Rev. 03/19/2001