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PC87415VCG Fiches technique(PDF) 10 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
No de pièce PC87415VCG
Description  PCI-IDE DMA Master Mode Interface Controller
PDF  42 Pages
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Fabricant  NSC [National Semiconductor (TI)]
Site Internet  http://www.national.com
Logo NSC - National Semiconductor (TI)

PC87415VCG Fiches technique(HTML) 10 Page - National Semiconductor (TI)

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50 Configuration Registers (Continued)
Reg
RW
Description
(HEX)
1C – 1F
RW
BASE ADDRESS REGISTER 3 (BAR3)
Used for channel 2 control block access if channel 2 is programmed to
be in native mode The device decodes 4 bytes of address space for control block accesses This register is
always readwrite regardless of the setting of the NativeLegacy bit in the PIF
Bit 0 always 1
Bit 1 always 0
20 – 23
RW
BASE ADDRESS REGISTER 4 (BAR4)
Used to address the Bus Master IDE control and status registers
Bit 0 always 1
Bit 1 always 0
Bit 2 always 0
Bit 3 always 0
24–3B
NOT USED
3C
RW
INTERRUPT LINE
(default is 0Eh)
3D
R
INTERRUPT PIN
Bit 0 Always 1 Designates INTA
Bit 1 – 7 0000000
3E–3F
NOT USED
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