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PC87200 Datasheet(PDF) 14 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Part # PC87200
Description  PC87200 PCI to ISA Bridge
PDF  33 Pages
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Manufacturer  NSC [National Semiconductor (TI)]
Direct Link  http://www.national.com
Logo NSC - National Semiconductor (TI)

PC87200 Datasheet(HTML) 14 Page - National Semiconductor (TI)

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5.0 Pin Descriptions (Continued)
14
www.national.com
5.3.6 PC/PCI signals
5.3.7 Power, Ground, and Reserved Terminals
PCPCIREQ#
125
O
PC/PCI Bus Request
The PC87200 asserts PCPCIREQ# using the PC/PCI DMA request protocol in
response to a DMA request or ISA master request to gain ownership of the PCI
bus. The PCPCIREQ# and PCPCIGNT# signals are used to arbitrate for the PCI
bus.
PCPCIGNT#
126
I
PC/PCI Bus Grant
PCPCIGNT# is asserted using the PC/PCI DMA grant protocol by an arbiter that
indicates to the PC87200 that access to the PCI bus has been granted.
Signal Name
Pin No.
Type
Description
VDD
1,19,39,
59,71,
79,89,
97,105,
113,121,
139,150
PWR
3.3V (nominal) Power Connection
VSS
2,20,40,
60,72,
80,90,
98,106,
114,122,
140,151
GND
Ground Connection



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