PCVisionplus
Hardware Reference
Registers
3–51
Rev 02; February 8, 2002
3.4.9 AM Interrupt Control (AMINTEN) R/W
0
7
BADR2 + 0x24
Reserved
VBODD
VBEVEN
VBLANK
TCNT
PIOINTEN
EOTINTEN
SOTINTEN
8
15
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
PCP_AM_INTEN_32
16
23
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
24
31
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
INTEN
INTEN
INTEN
INTEN
This register controls the external interrupt sources: triggers, timing, and the I/O port.
Bit
Mnemonic
Function
0
SOTQIEN
Start of Trigger Interrupt Enable
1
EOTQIEN
End of Trigger Interrupt Enable
2
PIOIEN
Parallel I/O Port Interrupt Enable
3
TCNTINTEN
Timer Count Interrupt Enable
4
VBLANKINTEN
Vertical Blank Interrupt Enable
5
VBEVENINTEN
Vertical Blank Even Field Interrupt Enable
6
VBODDINTEN
Vertical Blank Odd Field Interrupt Enable
7–31
Reserved
“Don’t care”
3.4.9.1 Start of Trigger Interrupt Enable (SOTINTEN) R/W
This bit enables an interrupt that occurs at the start of a triggered acquisition. The input polarity is defined by the
TRIGPOL bit. If enabled, an interrupt is set and latched at the transition of the external trigger input that causes a
triggered acquisition. The status and clear bit for this register is SOTINTSTAT, in the AMINTCLR register. This
interrupt source is only active if TRIGEN enables trigger operation, and fires prior to the trigger cycle start.
SOTIEN
Function
0
Disable Start Of Trigger interrupt
1
Enable Start Of Trigger interrupt
3.4.9.2 End of Trigger Interrupt Enable (EOTINTEN) R/W
This bit enables an interrupt that occurs at the end of a triggered acquisition. If enabled, an interrupt is set and latched
at the completion of the triggered acquire cycle. The status and clear bit for this interrupt is EOTINTSTAT, in the
AMINTCLR register.
EOTIEN
Function
0
Disable End Of Trigger interrupt
1
Enable End Of Trigger interrupt
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