XR16C850CJ EXAR [Exar Corporation], XR16C850CJ Datasheet - Page 16

• Manufacturer Part Number: XR16C850CJ
• Manufacturer: EXAR [Exar Corporation]

Note *2: All interrupt outputs are inactive (three state mode) except when the selected address range is valid.
XR16C850
Rev. 1.20
Table 2. PC MODE INTERNAL ADDRESS DECODE FUNCTIONS
SEL S3 S2 S1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
-
-
0
0
1
1
0
0
1
1
-
-
0
1
0
1
0
1
0
1
-
-
3F8-3FF
2F8-2FF
3E8-3EF
2E8-2EF
3F8-3FF
2F8-2FF
3E8-3EF
2E8-2EF
278-27F
378-37F
A3-A9
16
COM Port
COM-1
COM-2
COM-3
COM-4
COM-1
COM-2
COM-3
COM-4
LPT-2
LPT-1
Selected IRQ *2
IRQB (IRQ4)
IRQC (IRQ3)
IRQB (IRQ4)
IRQC (IRQ3)
IRQA (IRQn)
IRQA (IRQn)
IRQA (IRQn)
IRQA (IRQn)
N/A
N/A