S5920Q Applied Micro Circuits Corporation, S5920Q Datasheet - Page 143
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: Pass-Thru Operation
Clock 9: DXFR# is sampled active (low) by the Add-
On device which indicates that the Add-On device
must latch the fourth data word at the rising edge of
this clock. PTATN# is driven inactive (high) indicating
that this will be the last data phase.
Clock 10: DXFR# is sampled active (low) by the Add-
On device which indicates that the Add-On device
must latch the fifth data word at the rising edge of this
clock.
DXFR# is deasserted since the access is complete.
PTBE# is driven to Fh indicating all 4 bytes have been
accessed. PTNUM and PTWR may change state
since the access is complete.
Figure 77. Active Mode PCI Write Showing a One Wait State Programmed Delay
Figure 78. 16-Bit Active Mode PCI Read w/ Programmed Wait States
AMCC Confidential and Proprietary
ADCLK
PTATN#
PTBURST#
PTNUM[1:0]
PTWR
PTBE[3:0]#
DXFR#
DQ[15:0]
PTADR#
PTWAIT#
PTATN#
PTBURST#
PTNUM[1:0]
PTWR
PTBE[3:0]#
DXFR#
DQ[31:0]
PTADR#
PTWAIT#
ADCLK
0
0
1
1
2
PTADDR
PTADDR
2
3
3
Data1
Ch
DATA1
4
4
LOW
5
1h
5
6
DATA2
Data2
1h
6
Clock 11: PTBE# may change state.
Figure 17 shows a Pass-Thru Burst Write data transfer
in which the S5920 has been programmed to strobe
data using a one-wait state delay. The Add-On device
leaves PTWAIT# inactive (high) for all time.
Clock by Clock description of Figure 17
Clock 1: The S5920 drives PTATN# and PTBURST#
active (low) indicating the start of a PCI to Add-On
data transfer with more than one data cycle. PTBE[3:0]
and PTNUM[1:0] are driven to their appropriate values
for this transfer. PTWR is driven high indicating a
Pass-Thru write.
7
3h
7
HIGH
8
DATA3
Data3
8
9
Fh
9
10
DATA4
Data4
10
11
Revision 1.02 – April 12, 2007
11
12
Fh
12
13
Data Book
13
14
DS1596
143
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