S5920Q Applied Micro Circuits Corporation, S5920Q Datasheet - Page 148
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
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Price
Company:
Part Number:
S5920Q
Manufacturer:
AMCC
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5 510
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S5920 – PCI Product: Pass-Thru Operation
(disconnect, but with no data transfer), the read data is
held in the FIFO until the master comes back for it. In
this case, the Retry Flush Enb has no effect. The PCI
2.1 Specification states that the master must come
back if it receives a retry.
Write FIFO Mode indicates what to do in the event that
a full FIFO is detected during a PCI write transfer. If
low, the S5920 will perform an immediate disconnect,
thus freeing up the PCI bus for other transfers. The ini-
AMCC Confidential and Proprietary
tiator will have to come back to complete the data
transfer, after which time the FIFO should no longer be
full. If Write FIFO Mode is high, the S5920 will deas-
sert TRDY#, and allow for either another FIFO location
to become available (as the Add-On has read a
DWORD), or wait for the Target Latency to expire (8
clocks from previous data phase), thus initiating a dis-
connect. This will allow for the Add-on device to
“catch-up” without losing the burst.
Revision 1.02 – April 12, 2007
Data Book
DS1596
148
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