W83L517D_05 Datasheet, PDF (121/133 Pages) Winbond – LPC I/O for Notebook

W83L517D/W83L517D-F
12.8 Logical Device 6 (FIR)
CR30 (Default 0x00)
Bit 7 - 1: Reserved.
Bit 0:
= 1 Activates the logical device.
= 0 Logical device is inactive.
CR60, CR 61 (Default 0x00, 0x00)
These two registers select IR I/O base address [0x100:0xFF8] on 8 byte boundary.
CR70 (Default 0x00)
Bit 7 - 4: Reserved.
Bit [3:0]: These bits select IRQ resource for IR
CR74 (Default 0x04)
Bit 7-3 : Reserved.
Bit 2-0 : These bits select DRQ resource for RX of FIR.
= 0x00 DMA0
= 0x01 DMA1
= 0x02 DMA2
= 0x03 DMA3
= 0x04-0x07 No DMA active
CR75 (Default 0x04)
Bit 7-3 : Reserved.
Bit 2-0 : These bits select DRQ resource for TX of FIR.
= 0x00 DMA0
= 0x01 DMA1
= 0x02 DMA2
= 0x03 DMA3
= 0x04-0x07 No DMA active
CRF0 (Default 0x00)
Bit 7 - 4: Reserved.
Bit 3: RXW4C
= 0 No reception delay when SIR is changed from TX mode to RX mode.
= 1 Reception delays 4 characters-time (40 bit-time) when SIR is changed from TX mode
to RX mode.
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Publication Release Date: May 23, 2005
Revision 1.0