DM6210 datasheet(37/91 Pages) ETC

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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.

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.

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

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