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Infrared (IR) Subsystem
The IR subsystem supports the following functions:
MIF/FIR mode
– 9.6 Kbps
– 57.6 Kbps
– 115.2 Kbps
– 1.152 Mbps
– 4.0 Mbps
Sharp** mode
– 9,600 bps
The I/O address can be selected from the following with the system
utility program. The IR subsystem uses one serial port address and
one IR controller register address:
IRQ Level and DMA Channel
The IR subsystem uses one IRQ level and two DMA channels for
ThinkPad mode. (Generic mode and Sharp mode do not require
DMA channels.)
I/O Address
03F8–03FF Serial port 1 (default)
02F8–02FF Serial port 2
03E8–03EF Serial port 3
02E8–02EF Serial port 4
03F8–03FF IR controller register 1 (default)
02F8–02FF IR controller register 2
03E8–03EF IR controller register 3
02E8–02EF IR controller register 4
IRQ Level DMA Channel
IRQ 3
IRQ 4 (default)
IRQ 5
DMA 0
DMA 3
3-8 Subsystems