rtd DM6210, Руководство пользователя

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4-5
BA + 5: IRQ Select (Read/Write 8-bit)
This register is used to set the interrupt source and channel. Reading this register returns the current
settings.
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IRQ Source Select
000 = End-of-Convert
001 = User TC Counter 0 out
010 = User TC Counter 1 out
011 = User TC Counter 2 out
100 = External Clock 2
101 = P0 Latch Status
110 = P1 Latch Status
111 = Reserved
IRQ Channel Select
000 = Disabled
001 = IRQ3
010 = IRQ5
011 = IRQ9
100 = IRQ10
101 = IRQ11
110 = IRQ12
111 = IRQ15
Starting with bit 0, these status bits show:
Bit 0 – Shows the status of the A/D converter.
Bit 1 – Shows when an interrupt has occurred.
Bit 2 – Shows when data has been latched at the Port 0 digital inputs.
Bit 3 – Shows when data has been latched at the Port 1 digital inputs.
Bit 4 – Reserved.
Bit 5 – Reserved.
Bit 6 – Reserved.
Bit 7 – Reserved.
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IRQ Status
0 = no interrupt
1 = interrupt
P0 Latch Status
0 = Data is not latched
1 = Data is latched
P1 Latch Status
0 = Data is not latched
1 = Data is latched
End-of-Convert - an interrupt is generated when the A/D conversion is done.
User TC Counter 0 out - an interrupt is generated when user TC Counter 0's count reaches 0.
User TC Counter 1 out - an interrupt is generated when user TC Counter 1's count reaches 0.
User TC Counter 2 out - an interrupt is generated when user TC Counter 2's count reaches 0.
External Clock 2 - an interrupt is generated when the external clock 2 (CN3 - 45) line is pulsed.
P0 Latch Status - an interrupt is generated when data has been latched into Port 0.
P1 Latch Status - an interrupt is generated when data has been latched into Port 1.
BA + 6: Read Status/Clear IRQ (Read/Write 8-bit)
A read provides the status bits defined below.
End-of-Convert Status
0 = converting
1 = not converting