ST92196A STMicroelectronics, ST92196A Datasheet - Page 56
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ST92196A
Manufacturer Part Number
ST92196A
Description
8/16-bit Mcu For Tv Applications With Up To 96k Rom, On-screen-display And 1 Or 2 Data Slicers
Manufacturer
STMicroelectronics
Datasheet
1.ST92196A.pdf
(268 pages)
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INTERRUPT REGISTERS (Cont’d)
EXTERNAL INTERRUPT TRIGGER REGISTER
(EITR)
R242 - Read/Write
Register Page: 0
Reset value: 0000 0000 (00h)
Bit 7 = TED1: INTD1 Trigger Event
Bit 6 = TED0: INTD0 Trigger Event
Bit 5 = TEC1: INTC1 Trigger Event
Bit 4 = TEC0: INTC0 Trigger Event
Bit 3 = TEB1: INTB1 Trigger Event
Bit 2 = TEB0: INTB0 Trigger Event
Bit 1 = TEA1: INTA1 Trigger Event
Bit 0 = TEA0: INTA0 Trigger Event
These bits are set and cleared by software.
0: Select falling edge as interrupt trigger event
1: Select rising edge as interrupt trigger event
EXTERNAL INTERRUPT PENDING REGISTER
(EIPR)
R243 - Read/Write
Register Page: 0
Reset value: 0000 0000 (00h)
Bit 7 = IPD1: INTD1 Interrupt Pending bit
Bit 6 = IPD0: INTD0 Interrupt Pending bit
Bit 5 = IPC1: INTC1 Interrupt Pending bit
TED1 TED0 TEC1 TEC0 TEB1 TEB0 TEA1 TEA0
IPD1 IPD0
7
7
IPC1
IPC0 IPB1 IPB0 IPA1 IPA0
0
0
Bit 4 = IPC0: INTC0 Interrupt Pending bit
Bit 3 = IPB1: INTB1 Interrupt Pending bit
Bit 2 = IPB0: INTB0 Interrupt Pending bit
Bit 1 = IPA1: INTA1 Interrupt Pending bit
Bit 0 = IPA0: INTA0 Interrupt Pending bit
These bits are set by hardware on occurrence of a
trigger event (as specified in the EITR register)
and are cleared by hardware on interrupt acknowl-
edge. They can also be set by software to imple-
ment a software interrupt.
0: No interrupt pending
1: Interrupt pending
EXTERNAL INTERRUPT MASK-BIT REGISTER
(EIMR)
R244 - Read/Write
Register Page: 0
Reset value: 0000 0000 (00h)
Bit 7 = IMD1: INTD1 Interrupt Mask
Bit 6 = IMD0: INTD0 Interrupt Mask
Bit 5 = IMC1: INTC1 Interrupt Mask
Bit 4 = IMC0: INTC0 Interrupt Mask
Bit 3 = IMB1: INTB1 Interrupt Mask
Bit 2 = IMB0: INTB0 Interrupt Mask
Bit 1 = IMA1: INTA1 Interrupt Mask
Bit 0 = IMA0: INTA0 Interrupt Mask
These bits are set and cleared by software.
0: Interrupt masked
1: Interrupt not masked (an interrupt is generated if
IMD1 IMD0 IMC1 IMC0 IMB1 IMB0 IMA1 IMA0
the IPxx and IEN bits = 1)
7
INTERRUPTS
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