FDC37C669_07 SMSC [SMSC Corporation], FDC37C669_07 Datasheet - Page 136

• Manufacturer Part Number: FDC37C669_07
• Description: PC 98/99 Compliant Super I/O Floppy Disk Controller with Infrared Support
• Manufacturer: SMSC [SMSC Corporation]

It is the responsibility of the software to ensure that two IRQ's are not set to the same IRQ number.
Potential damage to chip may result.
OUT2 bit
UART1
0
1
1
0
0
1
1
1
1
0
1
1
0
0
1
1
1
1
UART1
Output State
UART1 IRQ
de-asserted
de-asserted
de-asserted
de-asserted
de-asserted
de-asserted
asserted
asserted
asserted
asserted
asserted
asserted
Z
Z
Z
Z
Z
Z
Table 60 - UART Interrupt Operation Table
OUT2 bit
UART2
0
0
0
1
1
1
1
1
1
0
0
0
1
1
1
1
1
1
UART2
UART2 IRQ Output
de-asserted
de-asserted
de-asserted
de-asserted
de-asserted
de-asserted
asserted
asserted
asserted
asserted
asserted
asserted
136
State
Z
Z
Z
Z
Z
Z
Share IRQ
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
No
No
No
No
No
No
No
No
Pin State
UART1
Z
1
0
Z
Z
1
1
0
0
Z
1
0
1
0
1
1
1
0
IRQ PINS
Pin State
UART2
Z
Z
Z
Z
Z
Z
Z
Z
Z
Z
Z
Z
1
0
1
0
1
0