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DS_1209F_004
73S1209F Data Sheet
Rev. 1.2
47
Interrupt Enable 0 Register (IEN0): 0xA8
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0x00
Table 44: The IEN0 Register
MSB LSB
EAL WDT ET2 ES0 ET1 EX1 ET0 EX0
Bit Symbol
Function
IEN0.7
EAL
EAL = 0 – disable all interrupts.
IEN0.6
WDT
Watchdog timer refresh flag.
Set to initiate a refresh of the watchdog timer. Must be set directly before
SWDT is set to prevent an unintentional refresh of the watchdog timer. WDT
is reset by hardware 12 clock cycles after it has been set.
IEN0.5 –
IEN0.4
ES0
ES0 = 0 – disable serial channel 0 interrupt.
IEN0.3
ET1
ET1 = 0 – disable timer 1 overflow interrupt.
IEN0.2
EX1
EX1 = 0 – disable external interrupt 1.
IEN0.1
ET0
ET0 = 0 – disable timer 0 overflow interrupt.
IEN0.0
EX0
EX0 = 0 – disable external interrupt 0.
Interrupt Enable 1 Register (IEN1): 0xB8
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0x00
Table 45: The IEN1 Register
MSB LSB
– SWDT EX6 EX5 EX4 EX3 EX2
Bit Symbol
Function
IEN1.7 –
IEN1.6
SWDT Watchdog timer start/refresh flag. Set to activate/refresh the watchdog
timer. When directly set after setting WDT, a watchdog timer refresh is
performed. Bit SWDT is reset by the hardware 12 clock cycles after it has
been set.
IEN1.5
EX6
EX6 = 0 – disable external interrupt 6.
IEN1.4
EX5
EX5 = 0 – disable external interrupt 5.
IEN1.3
EX4
EX4 = 0 – disable external interrupt 4.
IEN1.2
EX3
EX3 = 0 – disable external interrupt 3.
IEN1.1
EX2
EX2 = 0 – disable external interrupt 2.
IEN1.0 –