W83627SF-AW Winbond, W83627SF-AW Datasheet - Page 85

• Manufacturer Part Number: W83627SF-AW
• Manufacturer: Winbond

Specifications of W83627SF-AW

• Pin Count: 128
• Lead Free Status / RoHS Status: Not Compliant

CR26 (Default 0b0s000000)
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
: HEFRAS
: SEL4FDD
= 0
= 1
This bit defines how to enable Configuration mode. The corresponding power-on setting
pin is NRTSA (pin 51).
= 0
= 1
: LOCKREG
= 0
= 1
:Reserve
: DSFDLGRQ
= 0
= 1
: DSPRLGRQ
= 0
= 1
: DSUALGRQ
= 0
= 1
: DSUBLGRQ
= 0
= 1
Disable FDC legacy mode on IRQ and DRQ selection, then DO register bit 3 is not
effective on selecting IRQ.
Enable PRT legacy mode on IRQ and DRQ selection, then DCR bit 4 is effective
on selecting IRQ.
Disable PRT legacy mode on IRQ and DRQ selection, then DCR bit 4 is not
effective on selecting IRQ.
Enable UART A legacy mode IRQ selecting, then MCR bit 3 is effective on
selecting IRQ.
Enable UART B legacy mode IRQ selecting, then MCR bit 3 is effective on
selecting IRQ.
Disable UART A legacy mode IRQ selecting, then MCR bit 3 is not effective on
Disable UART B legacy mode IRQ selecting, then MCR bit 3 is not effective on
Enable FDC legacy mode on IRQ and DRQ selection, then DO register bit 3 is
effective on selecting IRQ.
Select two FDD mode.
Select four FDD mode.
Write 87h to the location 2Eh twice.
Write 87h to the location 4Eh twice.
Enable R/W Configuration Registers.
Disable R/W Configuration Registers.
selecting IRQ.
selecting IRQ.
- 85 -
Publication Release Date: May 31, 2005
W83627SF
Revision A1