IDT72P51777L7-5BBI IDT, Integrated Device Technology Inc, IDT72P51777L7-5BBI Datasheet - Page 35
IDT72P51777L7-5BBI
Manufacturer Part Number
IDT72P51777L7-5BBI
Description
IC FLOW CTRL 40BIT 376-BGA
Manufacturer
IDT, Integrated Device Technology Inc
Datasheet
1.IDT72P51767L7-5BB.pdf
(88 pages)
Specifications of IDT72P51777L7-5BBI
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Other names
72P51777L7-5BBI
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writing and reading from either the same queue of from different queues. The
device also supports simultaneous queue switching on the write and read ports.
on the write port. Refer to Table 10, Write Queue Switch Operation for a detailed
description of each queue switch clock cycle.
TABLE 10
IDT72P51767/72P51777 1.8V, MULTI-QUEUE FLOW-CONTROL DEVICES
(128 QUEUES) 40 BIT WIDE CONFIGURATION 5,898,240 and 11,796,480 bits
The IDT72P51767/72P51777 multi-queue flow-control device supports
The multi-queue flow-control device requires 4 clock cycles to switch queues
Queue Switch Cycle
WADEN
RADEN
WCLK
RCLK
WEN
Qout
REN
QS-1
QS0
QS1
QS2
QS3
Din
—
PQ
PQ
WRITE QUEUE SWITCH OPERATION
Queue Switch Initiated, Rewrite/No Rewrite selection
Queue MARK / Un-MARK
—
•
•
Start of Write Data Operation
PAF signal updated for Next Queue (NQ)
Full Flag (FF) updated for NQ
PQ
PQ
PQ
PQ
IDT Mode
Figure 13. Simultaneous Queue Switching
PQ
PQ
PQ
PQ
35
The simultaneous queue switching may occur with either the Write Clock and
Read Clock synchronous or asynchronous to each other. For reference refer
to Figure 13, Simultaneous Queue Switching.
NQ
PQ
PQ
NQ
COMMERCIAL AND INDUSTRIAL
TEMPERATURE RANGES
FEBRUARY 11, 2009
6724 drw15
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