S5920Q Applied Micro Circuits Corporation, S5920Q Datasheet - Page 89
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
ADD-ON PASS-THRU CONFIGURATION
REGISTER (APTCR)
Figure 35. Pass-Thru Configuration Register
AMCC Confidential and Proprietary
Register Name:
Add-On Address:
Power-up value:
Add-On 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 (APTCR) is physi-
cally the same as the PCI Pass-Thru configuration
register (PTCR). It is intended that either the PCI sys-
tem or local Add-On interface will write to this register,
but not both. However, in the event that both the PCI
and Add-On write to this register, whichever side wrote
last wins. This register is also intended to be initialized
once, prior to any PCI bus operations. Pass-Thru
operation cannot be guaranteed if this register is
updated while a Pass-Thru transaction is being
performed.
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
DS1596
0
89
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