w83627hg Winbond Electronics Corp America, w83627hg Datasheet - Page 87

• Manufacturer Part Number: w83627hg
• Description: Winbond Lpc I/o
• Manufacturer: Winbond Electronics Corp America

CR26 °Default 0b0s000000±
BIT
7
6
5
4
3
2
1
0
SEL4FDD
0š Select two FDD mode.
1š Select four FDD mode.
HEFRAS
These two bits define how to enable Configuration mode. The corresponding power-on
setting pin is NRTSA °pin 51±. HEFRAS Address and Value
0š Write 87h to the location 2E twice.
1š Write 87h to the location 4Etwice.
LOCKREG
0š Enable R/W Configuration Registers
1š Disable R/W Configuration Registers.
Reserve
DSFDLGRQ
0š Enable FDC legacy mode on IRQ and DRQ selection, then DO register bit 3 is effec-
tive on selecting IRQ
1š Disable FDC legacy mode on IRQ and DRQ selection, then DO register bit 3 is not
effective on selecting IRQ
DSPRLGRQ
0š Enable PRT legacy mode on IRQ and DRQ selection, then DCR bit 4 is effective on
selecting IRQ
1š Disable PRT legacy mode on IRQ and DRQ selection, then DCR bit 4 is not effec-
tive on selecting IRQ
DSUALGRQ
0š Enable UART A legacy mode IRQ selecting, then MCR bit 3 is effective on select-
ingIRQ
1š Disable UART A legacy mode IRQ selecting, then MCR bit 3 is not effective on se-
lecting IRQ
DSUBLGRQ
0š Enable UART B legacy mode IRQ selecting, then MCR bit 3 is effective on selecting
IRQ
1š Disable UART B legacy mode IRQ selecting, then MCR bit 3 is not effective on se-
lecting IRQ
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DESCRIPTION
W83627HF/ F/ HG/ G
Publication Release Date: June 09, 2006
Revision 2.27