m66291 Renesas Electronics Corporation., m66291 Datasheet - Page 21

• Manufacturer Part Number: m66291
• Description: Assp Usb2.0 Device Controller
• Manufacturer: Renesas Electronics Corporation.

M 6 6 2 9 1 G P / H P
R e v 1 . 0 1
(11) INTA (Interrupt Polarity) Bit (b0)
This bit sets the interrupt signal output polarity.
When this bit is set to “0”, the occurrence of interrupt is notified when;
When this bit is set to “1”, the occurrence of interrupt is notified when;
2 0 0 4 . 1 1 . 0 1
In case of edge sense (INTL bit = “0”) : Change from “H” to “L”
In case of level sense (INTL bit = “1”) : “L” level
In case of edge sense (INTL bit = “0”) : Change from “L” to “H”
In case of level sense (INTL bit = “1”) : “H” level
p a g e 2 1 o f 1 2 2
<Edge sense>
<Leve sense>
Interrupt factor 1
Interrupt factor 2
Interrupt factor 1
Interrupt factor 2
Interrupt pin
Interrupt pin
("H" active)
("H" active)
("L" active)
("H" active)
("H" active)
("L" active)
Figure 2.5 Interrupt Signal Output Timing
Factor 1 occur
Factor 1 occur
Factor 2 occur
Factor 2 occur
Factor 1 clear
Factor 1 clear
(Approx.667ns)
Negate period
Factor 2 clear
Factor 2 clear