W83626F Datasheet, PDF (23/34 Pages) Winbond – LPC-to-ISA Bridge

LPC TO ISA BRIDGE SET
W83626F/W83626D
PRELIMINARY
Bit 2 : =0 Normal used.
=1 Wake up from power-down mode by IRQ 10 occurred.
Bit 1 : =0 Normal used.
=1 Wake up from power-down mode by IRQ 9 occurred.
Bit 0 : =0 Normal used.
=1 Wake up from power-down mode by IRQ 8 occurred.
CR48 (DMA CYCLES FAST MODE SELECT, Default 0x00)
(Write only)
The Fast mode is used to improve the performance of transferable interface, because some
applications will do fast transaction . To set the suitable bits to decide on specify range or all ISA cycles
will meet the requested DMA cycles.
Bit 7 : = 0 Normal used.
= 1 The DMA cycles of channel 7 is in fast mode.
Bit 6 : = 0 Normal used.
= 1 The DMA cycles of channel 6 is in fast mode.
Bit 5 : = 0 Normal used.
= 1 The DMA cycles of channel 5 is in fast mode.
Bit 4 : Reserved.
Bit 3 : = 0 Normal used.
= 1 The DMA cycles of channel 3 is in fast mode.
Bit 2 : = 0 Normal used.
= 1 The DMA cycles of channel 2 is in fast mode.
Bit 1 : = 0 Normal used.
= 1 The DMA cycles of channel 1 is in fast mode.
- 21 -
Publication Release Date: Feb 2000
Revision 0.50