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VT83C572 Datasheet(PDF) 6 Page - List of Unclassifed Manufacturers

Part # VT83C572
Description  PCI TO USB CONTROLLER
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Manufacturer  ETC [List of Unclassifed Manufacturers]
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VIA Technologies, Inc.
VT83C572
-4-
VT83C572 PIN DESCRIPTION
Signal Name
Pin No.
I/O
Signal Description
PCI Bus Interface
AD[31:0]
98-100, 1-5, 9-
14, 17-19, 31,
32, 34-36, 38,
39, 41, 42, 44-
47, 49, 50
B
PCI Address/Data Bus: The standard PCI address and data lines. The
address is driven with FRAME# assertion and data is driven or
received in following cycles.
CBE#[3:0]
7, 20, 33, 40
B
Command/Byte Enable..
IDSEL
8
I
Initialization Device Select.
FRAME#
21
B
PCI Bus Frame Indicator.
IRDY#
22
B
Initiator Ready Indicator.
TRDY#
23
B
Target Ready.
DEVSEL#
24
B
Device Select.
STOP#
26
B
Stop Indicator.
PAR
30
B
Parity.
PERR#
27
B
PCI Bus Parity Error.
SERR#
28
I
System Error.
LOCK#
29
B
PCI Bus Lock.
REQ#
97
O
PCI bus request to the bus arbiter.
GNT#
96
I
PCI bus grant from the bus arbiter.
INTA #
95
I
PCI Interrupt Request.
PCLK
93
I
PCI Bus Clock.
PCIRST#
92
O
PCI Reset: An active low reset signal for the PCI bus.
Universal Serial Bus Interface
SD0+
88
B
USB Port 0 Data
SD0-
89
B
USB Port 0 Data
SD1+
84
B
USB Port 1 Data
SD1-
85
B
USB Port 1 Data
X1
71
I
USB Clock input, connected to 48Mhz oscillator or crystal input.
X2
70
O
USB 48Mhz crystal connection. Leave unconnected if oscillator is
used.
CPU Interface
SMI#
51
O
System Management Interrupt to the processor for legacy keyboard
and mouse support.
Power and Ground
VDD
6, 16, 43, 54,
63, 73, 82, 90,
94
I
Power Supply of 4.5 to 5.5V.
VSS
15, 25, 37, 48,
55, 69, 72, 83,
91
I
Ground
VDDA
87
I
USB Differential Output Power Source
VSSA
86
I
USB Differential Output Ground


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