w83c554f Winbond Electronics Corp America, w83c554f Datasheet - Page 116
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w83c554f
Manufacturer Part Number
w83c554f
Description
System I/o Controller With Pci Arbiter & Ultradma/33 Ide Controller
Manufacturer
Winbond Electronics Corp America
Datasheet
1.W83C554F.pdf
(156 pages)
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W83C554F
WINBOND ELECTRONICS CORP. AMERICA
Bit [10:9]
Bit 8:
Bit 7:
Bit [6:0]:
DSTMG. These bits encode the timing of DEVSEL#. They are hardwired to 01b indicating the
support of medium DEVSEL# timing. This allows for support of fast back-to-back PCI bus
cycles. This will maximize the PCI bus bandwidth for PIO data transfer cycles.
MPE. This bit will be set when operating as a bus master and either the PERR# output is
driven low by the W83C554F or the target asserts PERR# and bit 6 of the Device Control
Register is set.
FBB. This bit will always be set. The W83C554F fully supports fast back to back transactions
to different targets.
These bits are reserved and are hardwired to logic 0b.
Register Information
114
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