w83627thg Winbond Electronics Corp America, w83627thg Datasheet - Page 85
w83627thg
Manufacturer Part Number
w83627thg
Description
Winbond Lpc I/o
Manufacturer
Winbond Electronics Corp America
Datasheet
1.W83627THG.pdf
(142 pages)
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Manufacturer
Quantity
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Part Number:
W83627THG
Manufacturer:
WINBOND/华邦
Quantity:
20 000
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CR26 (Default 0s000000b)
CR28 (Default 0x00)
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Bit 7 - 3 : Reserved.
Bit 2 - 0 : PRTMODS2 - PRTMODS0
: SEL4FDD
= 0 Select two FDD mode.
= 1 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
= 0 Write 87h to the location 2Eh twice.
= 1 Write 87h to the location 4Eh twice.
: LOCKREG
= 0 Enable R/W Configuration Registers
= 1 Disable R/W Configuration Registers.
: Reserved
: DSFDLGRQ
= 0 Enable FDC legacy mode on IRQ and DRQ selection, then DO register bit 3 is
effective on selecting IRQ
= 1 Disable FDC legacy mode on IRQ and DRQ selection, then DO register bit 3 is not
effective on selecting IRQ
: DSPRLGRQ
= 0 Enable PRT legacy mode on IRQ and DRQ selection, then DCR bit 4 is effective on
selecting IRQ
= 1 Disable PRT legacy mode on IRQ and DRQ selection, then DCR bit 4 is not effective
on electing IRQ.
: DSUALGRQ
= 0 Enable UART A legacy mode IRQ selecting, then MCR bit 3 is effective on selecting
IRQ.
= 1 Disable UART A legacy mode IRQ selecting, then MCR bit 3 is not effective on
selecting IRQ.
: DSUBLGRQ
= 0 Enable UART B legacy mode IRQ selecting, then MCR bit 3 is effective on selecting
IRQ
= 1 Disable UART B legacy mode IRQ selecting, then MCR bit 3 is not effective on
selecting IRQ
= 0xx Parallel Port Mode
= 100 Reserved
= 101 External FDC Mode
= 110 Reserved
= 111 External two FDC Mode
- 78 -
W83627THF/W83627THG
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