S5920Q Applied Micro Circuits Corporation, S5920Q Datasheet - Page 79
S5920Q
Manufacturer Part Number
S5920Q
Description
Manufacturer
Applied Micro Circuits Corporation
Datasheet
1.S5920Q.pdf
(165 pages)
Specifications of S5920Q
Operating Temperature (min)
0C
Operating Temperature Classification
Commercial
Operating Temperature (max)
70C
Package Type
PQFP
Rad Hardened
No
Lead Free Status / Rohs Status
Not Compliant
Available stocks
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Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
S5920Q
Manufacturer:
AMCC
Quantity:
5 510
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S5920 – PCI Product: Operation Registers
PCI PASS-THRU CONFIGURATION REGIS-
TER (PTCR)
Figure 31. Pass-Thru Configuration Register
AMCC Confidential and Proprietary
Register Name:
PCI Address Offset:
Power-up value:
PCI Attribute:
Size:
31
Region 4
Pass-Thru Configuration Register
60h
80808080h
Read/Write
32 bits
D6 Endian Conversion
0 - No Conversion
1 - Big Endian Conversion
24
D7 Pass-Thru Mode
0 - PTADR# Not Driven
1 - PTADR# Driven
23
Region 3
D5 Write FIFO
0 - Enabled
1 - Disabled
16
15
This register controls the configuration for Pass-Thru
Regions 1-4:
Byte 0 Controls Pass-Thru Region 1
Byte 1 Controls Pass-Thru Region 2
Byte 2 Controls Pass-Thru Region 3
Byte 3 Controls Pass-Thru Region 4
IMPORTANT NOTE: This register (PTCR) is physi-
c a l l y t h e s a m e a s t h e A d d - O n P a s s - T h r u
Configuration Register (APTCR). It is intended that
either the PCI system or local Add-On interface will
write to this register, but not both. However, in the
event that both the PCI and Add-On must write to this
register, whichever side wrote last will update its value.
Also, Pass-Thru operation cannot be guaranteed if this
register is updated while a Pass-Thru operation is
already in progress.
Region 2
8
7
Revision 1.02 – April 12, 2007
Prefetch
D4 D3
00 - Disabled
01 - Small
10 - Medium
11 - Large
Active Mode Wait States
D2 D1 D0
000 - 0 Wait States
001 - 1 Wait States
010 - 2 Wait States
011 - 3 Wait States
100 - 4 Wait States
101 - 5 Wait States
110 - 6 Wait States
111 - 7 Wait States
Region 1
Data Book
0
DS1596
79
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